HOW TO TUFFLEX® WORKSHEET An introduction to the basic theories, calculations, and procedures of using TUFFLEX® Resin Binder Concentrate (RBC), Plus some informal hints to make the process a whole lot more fun! TUFFLEX Resin Binder Concentrate (RBC) is a breakthrough Water Catalyzed Polyurea-Urethane resin binder with entirely new capabilities and versatilities that were never available with the “old technology” moisture cure materials. With “old technology” urethanes, you needed to spread the material in paint like coats, then wait up to 24 hours for each coat to cure from moisture derived from the air before application of the other thin coats required to build up any meaningful membrane thickness. Solvent shrinkage, odors, mediocre physical properties and high labor costs resulting from multiple application steps are additional limitations. The Solvent Free "TUFF" has a Shore A hardness of about 65 and cures to an extremely TUFF flexible membrane for hard usage decks and roofing applications. The Solvent Free "SOFT" has a Shore A hardness of about 40 and is usually used as a pad in "T"-Joints, as a crack filler and as a coving & caulking material. The "TUFF" material can also be applied as the wear-surface coating on top of the "SOFT". These two materials can be "Mixed & Matched" to reach a Shore A hardness in between. A 50/50 blend or mixture of the two will result in a Shore A hardness of approximately 50. (Refer to the “TUFF” & “SOFT” TECHNICAL BULLETINS for further information.) The addition of 25% plain tap water cures the TUFFLEX RBC so that now any thickness of membrane can be applied in a single coat. Now a coatings contractor can spread a solvent - free, virtually odorless, extra tough and flexible polyurea-urethane coating knowing that he has control of the pot-life of his mixture, the thickness of his membrane and the time of its cure. (Never add less than 15% water because there might not be enough of the catalyzing water to completely react with the RBC and out-gassing will occur.) The three most important and unique things about both RBC “TUFF” & “SOFT” are: The TUFFLEX Technology has been used for waterproofing membranes, "T" - expansion and seismic joints, flexible sloping under-layment, crack filling, caulking, animal habitat seamless Mono-Mat Systems and by movie studios for the casting special effects props. TUFFLEX uses are only limited by your imagination. Water is the curing agent, and by adding the water, you also increase the yield by 25% and lower the end use cost by 25%. The advantage of a water catalyzed material is that you can apply the TUFFLEX Membrane "thicker & quicker" than the "old technology" elastomeric and save time & money. Such a wide range of versatility could lead one to think that TUFFLEX Materials and Systems are complicated and difficult to work with. Nothing could be further from the truth! It's that simple! It is this tremendous versatility - coupled with user friendliness that is at the very heart of TUFFLEX technology and application capabilities. 1. They are concentrated; so various fillers can be added. 2. They are water-cured; by adding 25% plain tap water. 3. The 25% water adds to the yield, and actually lowers the cost! Far from being complicated, these three facts are the backbone of the TUFFLEX Materials: Simplicity, Versatility and Economy. A bit later, we will review even more TUFFLEX Materials & Systems advantages, such as how to save additional labor and materials costs while solving some really unique problems. Understanding and Calculating Yield As with anything new, it only takes a bit of hands-on trial & error to relieve such apprehensions. A little experience and a little ingenuity can result in a combination that will help the contractor successfully increase his bottom line of job satisfaction and monetary gain. The basic “Yield" formulation is the addition of 25% water to each unit of TUFFLEX® RBC. This increases the yield by 25% and consequently, lowers the cost by 25%. HINT: Make copies of the following worksheet pages to use as onthe-job reminder sheets. One unit of TUFFLEX Resin Binder Concentrate (RBC), plus 25% water, yields 1.25 units of Base Membrane Mixture (BMM). RBC + 25% water = BMM. The primary, and one of the most unique materials, in the TUFFLEX product line is the TUFFLEX Resin Binder Concentrate (RBC). This comes in two forms: For example, a 5 gallon pail of TUFFLEX RBC X 1.25 yield = 6.25 gallons of TUFFLEX BMM. Solvent-Free "TUFF" and Solvent-Free "SOFT" Total cost (Material cost + tax + shipping, etc.), divided by 1.25 yields = $_.__, this gives you the true per gallon cost of a mixed gallon unit of BMM. TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 TUFFLEX overlay systems normally begin with proper surface preparation and priming, then the application of a base membrane of either 40-mils on smooth surfaces, such as well finished concrete or metal ship decks, or 62.5-mils (1/16 inch) on plywood or other less smooth surfaces. TUFFLEX RBC has also been used for 1/2inch (500-mil) seamless animal habitat pads as described in our Mono-Mat System brochure and literature! There are 1,600-mil sq. ft. (msf) per gallon of liquid. If you divide 1,600 by 40 mils thickness you get 40 sq. ft. of coverage. When 25% water is added to the TUFFLEX Resin Binder Concentrate (RBC) to act as the catalyst, the water also acts as a "filler material" increasing the "yield" of the material by 25% to 2,000 mil sq. ft. (1 gallon of RBC + 25% water = 1 ¼ gallons of ready-to-use Base Membrane Mixture (BMM). An extra quart of material for free!) Divide 2,000 mils by 40 mil thickness = 50 sq. ft. coverage per 1 ¼ gallon of BMM, 10 sq. ft. increase in coverage for the "free" cost of the water! RBC plus water = BMM. It is most efficient to mix in half-pail quantities (2 ½ gals. of RBC plus 2 or 2 ½ quarts of catalyzing water) because pouring water into a full 5-gallon pail would cause it to overflow. Each 5-gallon pail of RBC plus the catalyzing 25% of free water yields 6 to 6 ¼ gallons of usable Base Membrane Mixture (BMM). Up to 1 ¼ gallons of additional material for free! 40 mil system calculations: 1 gallon of TUFFLEX RBC + 1 quart (25%) water = 1 1/4 gallons of BMM/2000 msf. Divide by 40 mil thickness = 50 sq. ft. of coverage per mixed unit (1-gallon of RBC + 1-quart of water). A ½ pail mixing unit of RBC (plus its 2 1/2 quarts of water) will cover 125 sq. ft. and a full 5 gallon pail of RBC (plus its 5 quarts of water) will cover 250 sq. ft. at 40 mils thickness. 62.5 mil system calculations (1/16th inch.): 1 gallon of RBC + 1 quart (25%) water = 1 1/4 gallons of BMM /2,000 msf. Divide by 62.5 mil thickness = 32 sq. ft. of coverage per mixed unit (1-gallon of RBC + 1-quart of water). Half pail mixing unit of RBC (plus its 2 1/2 quarts of water) will cover 80 sq. ft. and a full 5-gallon pail of RBC (plus its 5 quarts of water) will cover 160 sq. ft. at 62.5 mils thickness. Calculating the RBC required for a 1,000 sq. ft. job 40 mil thickness: One gallon of RBC + 25% water covers 50 sq. ft. at 40 mils. A 1,000 sq. ft. job divided by 50 = 20 gallons or 4 – 5 gallon pails of RBC needed for the job. After adding the 25% of catalyzing water, the resulting yield is 25 gallons of ready-to-use BMM. (One 5 gallon pail of additional material for the “cost” of the water!) 62.5 mil thickness: One gallon of RBC + 25% water covers 32 sq. ft. at 62.5 mils. A 1,000 sq. ft. job divided by 32 = 31 ¼ gallons or a little over 6 – 5 gallon pails of RBC needed for the job. After adding the 25% of catalyzing water, the resulting yield is 38 gallons of ready-to-use BMM. (About 7 + gallons of additional material for the “cost” of the water!) As with any building material, a "safety factor" allowance should be figured in to compensate for uneven substrates, joint taping, patching and waste. Another way of figuring material usage: 1 gallon RBC = 1,600 mil square feet (msf) 1 quart water = 400 mil square feet 1 1/4 gallons = 2000 msf in 1 1/4 gallons of BMM. Divide by the desired thickness. Example: 1/4 inch = 250 mils, divided into 2,000 mils (1 1/4 gal. BMM) = 8 sq. ft. at 1/4 inch thick. Divide the cost per gallon of RBC by 2,000 msf to get the per mil cost and then multiply by the mils thickness needed to figure the membrane cost per sq. ft. "How To" and miscellaneous ramblings When the RBC is mixed with water, you have about 15 - 20 minutes +/- to apply the BMM and still have it flow freely and self level easily. On large jobs that will require multiple mixing cycles, so normally mix in half pail units as the job progresses. The mixer person is the key and he must time the mixing to keep a wet edge and not get ahead or behind the applicators. (It's a lot easier than it sounds. It just takes communication, practice and experience.) The rule of thumb when applying the BMM is "The quicker the better!" In other words, don't hesitate. You can detail before and after the membrane is applied, but try not to "dawdle" while the material is setting up in the pail. The quicker it goes down, the better the material will lay out and smoothly self-level. Hint: In HOT weather you can add COLD WATER to slow down the catalyzing rate and in COLD weather, HOT WATER to speed it up. As with everything else in life, experience and practice will make things easier as time progresses. Life is a learning curve! Set Up Time When the water is added, the final set up time will still depend on the weather and temperature. The additional of a chemical catalyst (The green colored vile.) is another tool to help meet your job needs. One vial of "green" is shipped with each pail of RBC and should be added when the pail is boxed and mixed in order to get the settled solids off the pail bottom and prior to the addition of water. This vial brings the pail up to the "normal" amount of catalyst. (This amount is kept out during manufacturing for better storage life.) If this vial is forgotten, the material will just take a little longer to set up. (But don't ever forget the water!!!)In cold weather, additional "green" chemical catalyst may be added to speed up the cure time. One additional 1 oz. vial per half pail mixing unit will maximize the curing time (1 for "normal" and 2 additional = 3 total per 5 gallon pail of RBC). The additional cost is only 2 to 3 cents per sq. ft. and it really speeds things up! The working time does not measurably change, just the end cure time, which means that you can get back on the cured membrane earlier to finish the job quicker. Curing Time On a “normal” 70-degree +/- day, the set up without additional chemical catalyst will be about 3 to 4 hours. With the addition of the "green" chemical catalyst, (3 vials max. per pail on very cold days) the time can drop to about 2 to 3 hours, or even quicker in warmer weather. As always, experience is the only true teacher! Adding filler material to the RBC TUFFLEX RBC can be thickened with rubber granules or sand in order to use it in some really unique and very cost-effective applications. The two rules of thumb are: 1. If you need the TUFFLEX mixture thick, mix it thick. If you need it thin, mix it thin. (Add more or less filler material.) 2. Don't ever forget the water!!!!!! Yes, it's that simple. Mix thick or thin as needed after you throw in 25% water. It's almost contractor proof! By using the TUFFLEX mixtures as your caulking or sloping materials, you will not have the waiting time that you would if you used cementitious or non-TUFFLEX caulking materials. These other materials must be allowed to dry out, out-gas and cure completely by being left open to the air. The TUFFLEX mixtures are internally curing materials and may be covered with the next application step as soon as they cure firm enough so that they do not lift up when applied over. (We call this "materials receptive." As long as you don't pull up more than you put down, you can proceed!) Cove up the walls, patch the cracks, tape the joints, and slope to drain then cover those steps, with the membrane coat application. The materials will bond to each other and cure out as one flexible and monolithic unit. The entire deck can "rock & roll" as a unit. This really speeds up total completion time. Remember, time is money! When rubber granules are added to the TUFFLEX RBC it obviously creates a more flexible system than when sand has been added. But, both rubber and sand have their place on the job site. Rubber is usually used when "caulking" or "spackling" mixtures are needed for filling cracks or coving up walls. You can use bulk guns or disposable tubes for application after the material has been mixed and thickened.) With the fillers, the cost is even less. Try to find a tougher or better caulk at any price! (Refer to the TUFFLEX SPECIFICATION: “CRACK FILLING AND CAULKING MATERIALS” and the TUFFLEX “How to” Photo Job History: “Coving and Caulking with thickened TUFFLEX Materials” for further information.) The TUFFLEX "Sand Slurry" is made with the "TUFF" material because you can add quite a bit of sand and it will still remains a very tough and solid material. A mixture of 1/2 to 1 unit of sand will still be a very fluid and easy to work mixture for filling surface spalling and general patching. By adding 1 ½ to 2 units of sand (With corresponding per unit cost savings) you can mix a stiff enough batch to form a sloping angle. If the deck flexes, the Sand Slurry will not de-laminate under the membrane like a cementitious or epoxy material would. This is why it works so well on plywood and twisting ship decks. Just part of the TUFFLEX "Rock & Roll" theory! (Refer to the TUFFLEX SPECIFICATION: “SAND SLURRY SPECIFICATION and APPLICATION GUIDE”.) Readily available 20 mesh silica sand is fine for the Sand Slurries, and either the EPDM texture rubber or the finer ground black tire rubber can be used for the caulking or coving tasks. If a lot of rubber is needed, the properly cleaned black tire grindings are less expensive than the EPDM texture rubber. "T" Joint In the TUFFLEX "T" Joint system, the "SOFT" binder is used in the expansion joint and the "TUFF" material is applied as a membrane over the top to form a monolithic "T" Joint. The joint will still be visible as it expands and contracts, but the edge wear, high heel shoe penetration problems and edge leakage are eliminated. Many more uses for TUFFLEX Materials & Systems can be found in our brochures, specifications book, on our web site www.tufflexpolymers.com and the Photo Job Histories on our CD, which is available through our web site or by calling our office. Compatible Solvents Use with caution, since solvents are flammable. Always check your local V.O.C. limiting requirements when selecting solvents for clean up. Sometimes, in some regulatory areas, the primers and color coats can be cut with solvent for economy and/or ease of application. Please check the specific TUFFLEX Technical Data Sheet for further info. Xylene and Toluene are compatible for use with epoxy primers and urethane grade PDA Acetate is compatible with polyureaurethanes. Never use a solvents that contains alcohol, it has a negative effect on polyurea-urethane membranes. Always read and understand the MSDS information for all materials used on the job site. WORKSHEET (07) HOW TO SUGGESTED BASIC EQUIPMENT LIST PAPERWORK: •Copy of job contract or work order. •Copy of the TUFFLEX Specification(s) to be used. •Building Permit, if required. •Copies of this list and any other notes to use as job site reminders. SAFETY AND PROTECTIVE EQUIPMENT: •Material Safety Data Sheets (MSDS) for making employees aware of safety and self-protection. •Activated carbon filter masks or fresh air masks for work indoors and/or in poorly ventilated areas. •Safety glasses or goggles for protection when mixing. •Proper rubber gloves for use with solvents. FOR MIXING: •Heavy-duty Milwaukee “Hole-Hawg” or equal. 300-r.p.m. is the fastest speed recommended, so that all minimum of air will be whipped into TUFFLEX mixtures. Keep the blade down in the bottom of the pail and draw the material from the surface when mixing in order to avoid mixing the air. Do not “bounce” the mixer up & down in the material, as that will whip in air that may become trapped in the mixture when curing and cause blisters. Refer to the ADVISORIES: “CAUSES OF SURFACE BLISTERS AND HOW TO AVOID THEM.” •5 gallon size mixing paddle •Heavy-duty electric cord with #12 size wire. •Two empty 5-gallon plastic pails for mixing that TUFFLEX RBC in. For “boxing” the material in prior to mixing and to mix in and carry to the application area. Extra plastic pails for use with the primer and colorcoats. Several 1 gallon plastic buckets for measuring and for holding small quantities of patching material. (Plastic containers are reusable as the cured material will peel out.) •Plastic trash cans, 30 gal. +/-. It is easier to dump the texture granules into the large plastic trash cans and work out of them than work out of the tippy bags. The recovered granules can be put back into the cans, lids snapped on, and transported to the next work site. Also good for holding the water for mixing. •Drop cloths or thin plywood panels to mix on and protect the job site surface. FOR SPREADING: •Measuring tape and chalk line for setting up quantity control grids on surfaces to be coated. Especially useful when first learning to use TUFFLEX Membrane materials and their spread rates. •Paint rollers with medium (1/8” to 3/8”) nap and poles for spreading primer, base material and colorcoats. Use solvents resistant resin core roller covers. Use good quality frames and poles. Cheap ones bend! •Concrete trowels in 4” x 14” to 4” x 20” sizes. Shorter trowels for use in congested areas. Round ended or notched trowels are optional depending on experience or needs. •Heavy-duty squeegees for larger jobs. Notched or straight depending on experience or needs. •Various sized spackle or wall board knives for spreading materials in different sized areas and touch-up. •Inexpensive paint brushes for touch-up. (Throw aways.) •An inside-angle concrete step trowel for coving at vertical walls with thickened TUFFLEX mixtures to form coving details. •Knee-pads. No “hands and knees” work should be down without knee-pads! •Lightweight cotton (breathable) gloves to keep hands cleaner. Use rubber gloves when using solvents. MISCELLANEOUS: •Lid lifters for easy removal of plastic pail lids. Eliminate cutting and saves lids for reuse. •Solvent for tool and hand cleaning. Always check your local V.O.C. limiting requirements when selecting solvents. Compatible solvents: Xylene, Xylol, Toluol, MEK and Trichloroethylene. Never use solvents that contain alcohol, which has a negative effect on urethanes. •Rags for clean-up. •Razor blade knives. •Duct tape for masking and taping off area edges. •3” wide polyester fabric reinforcement “TUFF-TAPE” for plywood joint bridging. Provides stress-relief and helps visually hide the joints. •Scissors for cutting fabric. •Hacksaw for cutting metal step-nosing, etc. •Tin snips for cutting and trimming metal flashing reinforcement mesh. •Masking tape and masking paper for detailing. (A few minutes of masking is a lot less time than hours of clean-up!) •Etching compound (muriatic acid, etc.) for galvanized flashing metal and TSP for neutralizing. •Chisels for opening and cleaning cracks. •Wet-Dry shop-vac for cleaning out cracks, crevices and after cleaning the vac, picking up excess texture granules for reuse. •Brooms, push and straight, for clean-up. Also dust pans. •4’ carpenter’s level for checking deck drainage. •Hammer, annular ring shank nails, screws, electric drill with screw bit, nail and/or staple guns depending on job size and needs. •Drag chain for checking spalled concrete and exposing to substrate that has to be removed. (2’ long heavy chain attached to a 2-3 foot long handle. High pitch sound means OK. Low pitch areas are probably delaminated and should be removed.) •Electric or gas vacuum blower. titled“REMOVING RUBBER GRANULE BROADCASTING TEXTURE GRANULES”. TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 See Advisory LUMPS AND HOW TO TUFFLEX ON-THE-JOB-REMINDER SHEET BEFORE LEAVING THE SHOP FOR YOUR JOB: You, and your crew, should be familiar with all TUFFLEX instructional, advisory and cautionary information. Review and/or take with you copies of the TUFFLEX Worksheet & Suggested Basic Equipment List. Make sure you have copies of the TUFFLEX MSDS information on the job. Be familiar with the TUFFLEX Specification that is to be applied. PLYWOOD APPLICATION REMINDERS: •Follow the surface preparation and application guidelines detailed in the TUFFLEX Pedestrian Deck Overlay Specification of Plywood. Some highlights of this Specification – •¾” plywood is recommended over 16” O.C. joist spacing. The A-grade side should be up to minimize surface prep time and labor required on lesser grade plywood. Good jobs start with good substrates. •All plywood side and end joints should be backed by minimum 2” framing members. •Joint spacing between plywood panels should be approximately 1/8-inch, or should be saw cut to about that spacing. This allows the plywood to naturally expand, contract and flex with the joints acting as small expansion joints. This prevents edge rubbing and failure. •Venting of sun-heated and expanded air in plywood joint spaces must be provided for. •Annular ring shank nails or screws of a length consistent with the plywood thickness, should be spaced at a maximum of 6” O.C.. Sink the nails/screws into the deck and fill indent with thickened TUFFLEX mixture prior to membrane application. •If the plywood surface is contaminated or of suspect condition, use a text patch to check the surface. Do not coat over a surface that may later fail just to satisfy a customer. Don’t own someone else’s problem! METAL FLASHING AND DECK EDGING: •Galvanized metal must be roughed up and/or etched with muriatic acid and neutralized with TSP. Apply the primer when dry. Surface preparation is important in all phases of coatings but is critical when going over flashing metal. If doubtful, use test patches to check the bond. •Metal edging and wall flashing should be nailed with bigheaded galvanized roofing nails, or equal, at a maximum of 3” O.C. near the edge closest to the plywood deck to minimize up-warping from the sun’s heat. PLYWOOD JOINT TREATMENT: •The 1/8” joint spacing, as recommended above, must be bridged with “TUFF-TAPE”, a flexible polyester fabric. The joint space is best left empty and the tape and membrane bridging above. •To bridge the joint, primer if called for, and a skim coat of TUFFLEX BMM is spread over the joint area. The TUFFTAPE is laid into the material and pulled tight to the deck with a broad knife. Start at the center of the tape and work to the ends, making sure to keep the tape flat and tight to the deck. Use a bit more material or use the excess around the tape to “set” the tape in the skim coat. The tighter you keep this application step, the less likely the joints will show on the surface after the membrane has been applied. “Traffic hump” joints are a no-no. By keeping the TUFF-TAPE joint at the bottom of the membrane application, maximum flexibility is achieved during normal expansion and contradiction of the deck. Note: sometimes the joints still show because of this deck movement. At least the joints won’t rub and fail. PRIMING: •When priming is called for, apply the primer uniformly, but sparingly, with no puddles and allow to cure until tacky or dry. Hint: because the primer does not sink into the metal flashing like it will with plywood and concrete, it will take longer for it to become tacky. So do your edge metal priming first and allow it to set-up while working on other areas of the deck. Metal is harder to primer because the primer does the flashing details. Rough-sand flashing metal for optimum bond. PREPPING AND DETAILING THE DECK: •Level and fill all nail & screw depressions and detail smooth wood to metal transitions with TUFF-TAPE and a thickened mixture of BMM. If a limited amount has to be done, use the surface texture granules, if a lot has to be done, use the less expensive black tire grindings. Mix thick or thin as needed for patching and coving. (Refer to the “‘How To’ and miscellaneous ramblings” of the TUFFLEX WORKSHEET.) •Use the TUFFLEX Sand Slurry to fill large voids, sloping to drain or ramping up several inches for wheelchair access to door sills. This makes a flexible sloping and filling material that will not crack with substrate movement. Shape with a wood float and finish with a steel trowel lubricated with approved solvent. (Refer to: “TUFFLEX Sand Slurry Specification and Application Guide” for further information.) MIXING AND APPLICATION RATES AND TECHNIQUES: •The best reference to review for mixing instructions and techniques is the “TUFFLEX Worksheet” in the HOW TO section. This publication will explain the theory and practice of TUFFLEX RBC use. The application rates are stated in the TUFFLEX Specification being used. The “Worksheet” shows how to figure material estimation and spread rates. TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 BROADCASTING TEXTURE GRANULES: •The texture choice is up to the customer’s needs and wishes. The rule of thumb is that the more slip resistant a surface, the harder it is to clean. Ski resorts usually want very aggressive surfaces and home owners want surfaces that are easier to keep clean. On pitching fishing boat decks in the North Sea, they will call for very course aluminum oxide to be back rolled into the colorcoats for maximum slip resistance. Education of the customer makes for an educated choice by them. •Many different surface treatment options are used on TUFFLEX Membranes. A waterproof membrane concrete under tile specification is available. 200,000 sq. ft. of TUFFLEX Membrane was used to protect the concrete under the Aquarium of the Americas in New Orleans. Cementicious “Splatter Coats” and cementicious design pattern systems are sometimes used on top of the membranes. •When the rubber granule suface is specified, wait about 15 to 30 minutes until the membrane starts to set-up and then broadcast to excess. Save the recovered granules for reuse. A bag of rubber will broadcast about 250 sq. ft. to excess. A recovery of about 1/3 of the rubber is about normal. (Refer to the TUFFLEX ADVISORY “SURFACE TEXTURES ON TUFFLEX MEMBRANES” for further information.) TUFFLEX COLORCOATS ACCELERATOR: AND CURE •Colorcoats dry from the moisture they derive from the air. Never add water as with RBC. •To assure color uniformity, thoroughly mix the solids up from the bottom and “box” together any pails with different batch numbers. •Apply with a paint roller using “cross-hatched” strokes to achieve a well bonded and even coat. •Apply the colorcoat spread rate in accordance with the specification in use. •One-half quart (one pint) of TUFFLEX Colorcoat Accelerator will hasten the cure of one 5-gallon pail of colorcoat. Refer to the TUFFLEX TECHNICAL BULLETIN for Colorcoat Accelerator for further information. ADVISORIES SURFACE TEXTURES ON TUFFLEX MEMBRANES TUFFLEX Membranes Systems are used in a wide variety of applications, ranging from our “normal” walking deck systems with rubber granules for slip resistance, to a 200,000 sq. ft. of bare membrane under the Aquarium of the Americas in New Orleans. That membrane was placed in order to waterproof and protect the concrete and re-bar of the old water front docks that the park and aquarium complex is built on. An interesting surface treatment! “truncated cone” effect that provides a textured surface that is much easier to clean and maintain in animal habitats. It is actually “mop-able”. It looks like a fine rubber knock-down finish and provides a nice random design surface that will stand up to much harder usage than a smooth membrane with only a colorcoat finish. It is also easy on bare feet, such as around a hot tub or swimming pool. TUFFLEX Membranes provide waterproof surfaces outdoors, rustproof & flexible decking systems on storm-tossed ships and thick seamless Mono-Mat Systems that provide sanitary cushioned flooring for zoo and veterinary uses. The trick to doing this surface is simple. The membrane and rubber granule system is applied as usual. One light colorcoat is applied and allowed to dry. Then the rubber granules can be sanded down just a little to knock off the tips. Without a light colorcoat to “stiffen” the rubber, the granules flex too much to sand. Then the colorcoat is applied as normal at the specified rate. (Do not try this system without some practice! It is very easy to over-sand the granules and get an uneven look. Practice makes perfect!) Try it when you have some left over materials. It’s a very versatile surface option that you can add to your customer’s choices. Surface treatments can run the gamut from smooth to very rough for maximum slip resistance. (On the pitching decks of some North Sea fishing boats, in addition to the rubber texture, the coatings contractor also back-rolled large grit aluminum oxide into the colorcoats for a really rough and traction enhanced surface. Not a surface for everyone, but one that meets their particular needs on storm tossed and pitching wet ship decks.) No one surface texture can do it all. The end use customer has to be involved in the texture choices and options in order to make an informed decision. These options range from esthetics and cost concerns to slip-and-fall safety needs. Informed customers are good customers. They alone are responsible for making the final texture decision. The general rule of thumb is that the more aggressive the surface texture, the harder it is to clean. For example, ski resorts need the traction of a heavy texture for safety reasons and only worry about clean-ability as a secondary concern. (Squaw Valley ski resort turns fire hoses on their TUFFLEX decks.) In the interior uses at ski resorts, the need for heavy traction enhancement is still there, so they use wet-dry industrial floor cleaning machines to scrub and vacuum up the dirty water. Cleaning is sometimes just a function of changing the way it is done. Mops will catch and pull on any textured surface, so when cleaning small areas, scrub with a stiff broom and use a simple wet-dry vac to suck up the dirty water. (Using a fire hose does seem like more fun though!) Some coatings contractors use cementicious “knock-down” splatter coats and decorative-pattern acrylic systems on top of the TUFFLEX Membranes when reliable waterproofing is needed underneath. Just follow the TUFFLEX Specification “Waterproofing Under Floor Tile Systems”, where a sand surface is applied on top of the membrane for bonding purposes for the thin set mastic and tile. Just substitute system in place of tile as the surface treatment. One interesting texture option finding a very strong acceptance in the veterinary Mono-Mat System market is using rubber texture granules and lightly sanding off their sharp tips. This leaves a APPLICATION HINTS WHEN USING THE RUBBER GRANULE SURFACE The use of rubber granules for texture was first tried by TUFFLEX in its very early days. Early development work was done as ski resort in Lake Tahoe, CA. (What better place to test the limits of decking materials. Weather extremes and ski boot wear & tear will show the mettle of a coating material in a very short time!) Where sand textures simply crush into powder under heavy traffic, the rubber will grip, flex and snap back. The rubber texture is also much quieter to walk on. Noise reduction at ski resorts and on metal ship decks is noticeable. Rubber granules also speed up the application process because they can be broadcast onto the wet membrane and not sink in as sand will. Even if some of the granules sink in, it is rubber into rubber, and will not break down and cause pin holes as sand in the membrane will. Wait 15 or so minutes after the membrane has been applied to heavily broadcast the rubber granules on to rejection. Experience is the best – and only! – teacher when it comes to application techniques. One 50 lbs. bag of texture rubber will broadcast about 250 sq. ft. The idea is to apply an excessive amount of rubber to insure an even application to the surface. If you try to “chicken feed” the surface, it will end up looking uneven. It is best to broadcast to rejection and bury the deck and sweep up the excess when the membrane becomes walk-able. About 1/3 of the rubber can be swept up and saved for re-use. Working out of bags is difficult, they tip and fall over a lot! So it is much easier to transfer the rubber to plastic trash cans with locking lids for storage, use and reuse. Also refer to the TUFFLEX ADVISORY “BACKROLLINGWhy, When & How” for additional information and hints. TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 ADVISORIES BACKROLLING: WHY, WHEN & HOW Backrolling is an important technique that adds versatility and capability to the application of any flooring/decking materials and/or systems. It is especially important with the TUFFLEX Materials because it brings additional speed of application to an already quickly applied system. Time is money! The general idea if backrolling is to be able to apply texture granules of choice; be it rubber, sand, aluminum oxide or copper slag granules, at the same time as applying the topcoat sealer. Backrolling can be done on old coated surfaces where the topcoat is being re-applied because of wear & tear and/or aesthetics and on new decks receiving their first topcoat application and where additional texture is desired on all or part of the deck area. EXISTING DECKS BEING RE-TOPCOATED On decks that have an existing urethane decking system in place, a TUFFLEX System or any other brand, that is being re-topcoated, the need for additional texture is most likely needed only in certain high wear areas of the deck. The areas on stair treads, pivot areas at the top of stairs, door ingress/egress areas, elevator exit areas, turning radius on vehicle traffic decks and such, tend to show texture wear faster the general area of the field of the deck. With the proper backrolling technique, the texture in those specific high wear areas can be re-textured at the same time as the new topcoat is being applied to the whole deck area. When re-topcoating an existing system, refer to the TUFFLEX ADVISORY “APPLICATION OF A NEW TOPCOAT” for further information. NEW DECKS HAVING THE TOPCOAT(S) APPLIED FOR THE FIRST TIME On new decks, the ability to add additional texture to the surface while applying the original topcoat(s) to the deck speeds up the total application process. Basically, you are doing two jobs at once – adding additional texture at the same time as applying the topcoat, making it a one step process. Depending on the site specific requirements of the deck, only some areas may need additional traction enhancement. As cited above, they may be the very heavy wear & tear areas such as step treads, pivot areas, ingress/egress areas and turning radius areas on vehicle traffic decks and such. BACKROLLING TECHNIQUE and guide you. A little practice on scrap plywood will go a long ways in preparing the applicator in perfecting this technique. Practice makes perfect and the only real teacher is experience! Backrolling is accomplished by mixing and applying the colorcoat topcoat of choice normally to an area and then lightly and evenly broadcast the additional texture of choice onto the wet surface. A rate of about 20 to 30% or as needed. You can use spiked shoes to walk out onto the wet surface to backroll or do an area just large enough to reach across with your roller and pole. Extending and then placing the roller away from yourself, you then pull back towards you, without applying any pressure, just the weight of the roller and handle, in an even and smooth manner. (Do not “push” the roller away from you as this will cause clumping. Pull the roller, that’s why it’s called “backrolling!”) This action will roll the material and texture together and spread it out evenly and bonded together on the deck surface. Repeat this cycle of topcoat application, light broadcast and backrolling across the area to be coated and textured. HINT: Apply the second coat first! If you are only addressing specific high wear areas, such as stair treads, turning radiuses and such, you can do them ahead of time and then come back over them with one continuous topcoat application without having to pause to do the broadcast and backroll cycle during the full application process. In other words, apply the “second” coat & texture granules to the areas where it is needed first, then apply the full topcoat over the entire deck in one continuous process! Identify the areas to be done ahead of time and apply a thin “tac” coat (10 +/- mils/160 sq. ft. per gallon.) of the chosen topcoat material and backroll the additional texture into this coat. This will lock down the added texture so when the full topcoat application is done at the specified rate of coverage and thickness, these areas have already been done and a seamless and even final finish is accomplished over the top of these areas to blend them in and really lock the texture down. This can be done on old decks that are being recoated or on new decks that are receiving their first topcoat(s). Remember, practice makes perfect! CAUTION: Do not try this application technique without some practice or the aid of someone experienced in backrolling to help TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 ADVISORIES SURFACE BLISTERS & HOW TO AVOID THEM Every coatings application contractor, and his crew, should understand the conditions that can cause blisters and how to prevent them. There is nothing inherent in properly mixed TUFFLEX Base Membrane Material (BMM) that causes surface blisters. What can cause them usually involves someone’s carelessness in one of the situations identified below. 1. 2. 3. 4. 5. 6. Lack of sufficient water, 15% minimum, to properly catalyzed the material. Whipping air into the material during mixing. Unbroken dry lumps of rubber or sand filler material. The expansion of air trapped in substrate pits and depressions. The conversion of substrate moisture into water vapor during rising temperature conditions during application process. Substrate surface contamination. These six conditions known to cause surface blisters are explained in detail below along with suggestions and prevention and repair. 1. The catalyzing water must be mixed into the TUFFLEX Resin Binder Concentrate (RBC) within the range of 15 to 25%. (One quart of water per gallon of RBC.) Going below 15% might not provide enough water to completely catalyze the mass of resin binder material. Any amount of water over 25% will not readily mix into the Resin Binder and can cause voids, holidays or excessive shrinkage. Without its water catalyst, the RBC must revert to curing from only what moisture it can get from the air, just as “old technology” urethanes must do, which is why they can only be applied in thin paint like layers. With the normally thicker TUFFLEX Membrane application, the top air-exposed surface would soon cure to a hardened skin. Under the skin, curing would slowly continue from what air could get through the skin, with the result that by product of urethane curing, small carbon dioxide mini-bubbles, would be trapped below the skin with no way to release. These can accumulate into blisters and the blisters can even merge into large areas of delimitation from the substrate. (A sign of not enough water is the membrane taking on a foam-like appearance on the inside. Not enough water added to completely catalyze the mass of the resin binder.) 2. The careless whipping-in of excess air during mixing must be avoided. It is recommended that mixing paddle speeds be kept low, 300 rpm and that the mixing head be kept at the bottom of the mixing bucket and not raised & lowered in a “jack-hammer” motion. When adding that catalyzing water, let it be pulled down into the bottom of the mixture by the mixing paddle action, a smooth and even blend will occur in about 30 seconds with a minimum of entrapped air. If the whipped in air fails to escape prior to the membrane setting up it will appear as air bubbles just under the surface that will expand and contract with the temperature. These must be cut out and patched prior to colorcoating. 3. Dry granule lumps contain air. Not only can large lumps make a physical bulge in the membrane but they also contain air that will expand in raising temperature and cause blisters. As above, the trapped air will cause a blister and must be cut out and patched. 4. The careless application of Base Membrane Mixture (BMM) over the top of unfilled substrate holes can trap air that may not bleed out prior to the membrane setting up. Very rough and/or porous substrates should be properly primed and prepped prior to membrane application. Double priming may be needed to fill all of the mini-pores in a degraded substrate. 5. It is important to recognize and avoid the combination of a moisture soaked substrate and a rising temperature condition that can change the water-vapor of greater volume. Water vapor will out-gas from the substrate that has just been over coated with a fluid base membrane (NO matter what brand) and will tend to cause blistering if it does not completely pass through. If in doubt, apply the BMM during the descending temperatures of the afternoon. 6. A failure to remove any contaminations and/or “bongbreakers” from the substrate surface could prevent the secure bonding fo the membrane. Where there is no bond, there is delimitation and the air in the void can expand into a blister. Bond breakers may consist of a variety of previously applied or spilled materials. Concrete form-release oils, paint, sealers or other previously applied overlay systems that have failed. “You’re only as good as your substrate,” is the watch work of coatings contractors. A crude, but practical, test is to sprinkle water on the substrate and observe its penetration. If it beads up, a sealer or other bond breaker is present and must be removed to assure proper bonding. A test patch is always advised if there is any question of bonding problems. The above points are also applicable to many other brands of membrane and paint systems and products. TUFFLEX does not have control over the end use and application of its products so the coatings contractor applying the materials and systems in the field must assume the responsibility of proper substrate preparation, proper detailing work and proper membrane application. TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 ADVISORIES COVING DETAILS WITH TUFFLEX MIXTURES TUFFLEX Resin Binder Concentrate (RBC) can have fine rubber granules added in order to thicken the material to a viscosity that will allow for the application of a flexible coving detail. The ingredient proportions can be varied over a wide range in order to achieve the proper mixture depending on site specific temperature and application conditions. This mixture can be endlessly adjusted as site conditions dictate. The two rules of thumb when adding filler materials are: To create a straight line at the top of a cove, a masking type tape is applied to the wall with the coving mixture feather edged onto it. The tape should always be removed before the TUFFLEX Material sets up because the cured material will tear the tape and cause an uneven edge. The tape may have to be re-applied if colorcoat is applied but taking the time to double tape is still faster than having to cut the tape out of the cured out membrane material and then also have to re-tape. 1. If you need the TUFFLEX Mixture thick, mix it thick. If you need it thin, mix it thin. (Add more or less rubber granules!) 2. Don’t forget to add the water! In other words, mix thick or thin as needed and throw in about 25% water! A starting formula would consist of: 1 part TUFFLEX RBC 1 ¾ to 2 parts of rubber granules 25% catalyzing water. A cement mason’s inside corner step tool is commonly used for coving and should have a cove radius of ½ to ¾ inch. Do not use a sharp 90 degree tool as it will not leave enough material into the cove detail to allow for proper flexing and movement of the joint. As with all other construction techniques from pounding nails to applying a coving detail, a little practice and experimenting goes a long ways! TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 ADVISORIES MAINTENANCE AND CLEANING GUIDELINES FOR SURFACING SYSTEMS TUFFLEX overlay systems only require minimal care and maintenance but like any other coating, some must inevitably be done. Cleaning can usually be accomplished by using a long-handled stiff bristle brush with biodegradable detergent and water to loosen the dirt. Then hose off the surface. The more aggressive the surface textures, the more attention that will have to be paid to keeping it clean. For large areas an automated floor cleaner that applies the water, scrubs the surface and then vacuums up the dirty water, can be used. A wet-dry vac can be used in small areas to pick up the dirty water if hosing off is not practical. The sooner stains are cleaned up, the better the results will be. The longer stains are unattended to, the harder they are to remove. box runoff is not allowed to cause deep staining from their soilsalts, plant food and fertilizer. Make sure that patio furniture, both hard plastic and metal, has protective caps where they contact the overlay. Use coasters if the caps are missing. The use of Astro-Turf or other outdoor carpets are not advised since they hold moisture and stains against the overlay below. Physical damage to the overlay should be immediately brought to the attention of the contractor that installed the TUFFLEX System. With proper attention and maintenance, TUFFLEX Systems have an exceptional longevity. For best results, contact your application contractor at 5 year intervals for an inspection. Special care should be taken that potted plants and planter TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 ADVISORIES APPLICATION OF A NEW TOPCOAT When recoating a previously topcoated urethane system, the following guidelines should be followed. 1. Thoroughly clean the deck surface by pressure washing and/or scrubbing with a stiff deck brush. If soiling is present, use light cleaning agents, such as TSP. When washing these cleaners off the deck, do not leave any residue on the surface that could act as a de-bonding agent. 2. The deck surface must be completely dry prior to recoating. 3. For problem areas, or where grease or oil may be present, solvent wipe the area. This may be accomplished by using a rag, lightly dampened paint roller or a rag wrapped around a deck brush to scrub and clean up the area. Do not pour solvent directly onto the deck surface. Use caution around open flames, water heaters or other heat source. Make sure no solvent is allowed to pond. Wipe up any solvent and allow the area to dry completely. Make sure the solvent is approved in the local jurisdiction where it is being used. Do not use an alcohol based solvent. Indoors or outdoors, make sure the area is well ventilated. 4. Mix the interlaminate primer specified and apply it sparingly. Primers work best when applied thin. Let the primer cure as per the TECHNICAL BULLETIN on the primer used. 5. When the primer has dried, apply the Specified Topcoat. Since this is a recoat, a full thickness of topcoat does not need to be applied. Apply the chosen topcoat at one-half the normally specified thickness or 10 mils/160 sq. ft. per gallon. 6. If some of the heavy traffic areas need to be re-textured, refer to the TUFFLEX ADVISORY “BACKROLLING, Why, When & How” for further information on how to address those areas. On some decks that have had multiple coats of topcoat applied over the years, the traction enhancement has been “buried” by the layers of topcoat, so some additional traction may have to be backrolled into the newest topcoat application for additional traction enhancement and/or safety concerns. FINAL NOTES: Always read the TUFFLEX TECHNICAL BULLETINS and MSDS information regarding all materials used during the recoating process. As with any coatings application, proper surface preparation, whether on a new deck or a recoat, is one of the most important parts of a successful project. TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 ADVISORIES RESIN BINDER CATALYST & COLORCOAT ACCELERATOR Optional for TUFFLEX Resin Binder Concentrate (RBC): The final curing rate for the mixed and applied TUFFLEX Base Membrane Mixture (BMM) may be speeded up or accelerated with the use of the optional Resin Binder Catalyst. There may be times when it becomes important to expedite the final curing rate of an applied TUFFLEX Membrane System, such as when early access must be accommodated or in cooler application temperatures (under 70 degrees) when all coatings take longer to set up. By using the Resin Binder Catalyst, the working and application time is shortened by a small amount but the final cure time is substantially shortened by about onethird what would be to one-half the normal set-up time. The TUFFLEX Resin Binder Catalyst is available in 1ounce vials and in one-quart cans. The Catalyst is tinted green for identification purposes. Depending on site temperature conditions up to three 1-ounce vials may be added to a 5-gallon pail of TUFFLEX RBC Base Membrane for maximum effect. Optional Accelerator for TUFFLEX Colorcoats: TUFFLEX Urethane Colorcoats are moisture cured materials that derive their drying action by drawing moisture only from the air. (Unlike the TUFFLEX RBC Base Membrane, water is never added to the colorcoats!) The optional Colorcoat Accelerator will aid the colorcoat to accelerate its ability to pull curing moisture out of the air at a faster rate than the untreated colorcoat material. The additional cost of the Colorcoat Accelerator is often off-set by the ability to open up or return to service a coated area quicker. RESIN BINDER CATALYST & COLORCOAT ACCELERATOR (06) TUFFLEX POLYMERS, LLC ♦ 10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309 TECHNICAL BULLETIN EPOXY FLOORING PROTECTION AND MAINTENANCE GENERAL Floors receive more abuse than walls, or any other area in a building. Floors have many kinds of products spilled on them, all kinds of heavy items dragged over them, and all kinds of light and heavy loads passing over them. Dirt, itself, is an abrasive and with people carrying it in on their shoes, the floor surface is bound to be scratched. If abrasive dirt and other spilled items are not occasionally removed they may become imbedded ground into surface leaving an undesirable appearance. All flooring and decking materials require some maintenance. TUFFLEX flooring materials have been specifically designed with tough wearing finish surfaces. While they are more maintenance free than most materials, they do require some maintenance care. How much care depends on the level of appearance the owner desires, the amount of abuse given the floors, and the dedication of the maintenance staff in carrying out the established maintenance program. TUFFLEX epoxy flooring systems benefit from a regular, thorough maintenance program. All floors tend to wear, becoming somewhat defaced by traffic grinding dirt into the floor. Regular removal of the dirt will improve the appearance and prolong the live of the floor. The periodic application of wax and/or polish will lubricate and protect the floor similar to the way oil prevents engine wear. TEMPORARY PROTECTION TUFFLEX epoxy floors require up to 7 days to fully cure and reach their optimum wear and chemical resistance, depending on drying conditions. During this period, the flooring surface should be protected by restricting traffic and/or by covering with protective paper or plywood. GENERAL MAINTENANCE Frequency of maintenance depends on the volume and type of traffic. The following recommendations should be used as a guide in establishing an acceptable maintenance program. 1. Frequently sweep or dust with a commercial sweeping compound. 2. As required, wash floor with warm water and free rinsing, low sudsing detergent, following detergent manufacturer’s directions. • Wet mop solution onto floor. • Scrub to loosen adhered dirt. Power scrubbing is recommended for large or heavily soiled areas. • Flush off soiled wash water with squeegee or wet vacuum and discard. • Do not re-use soiled water. 3. Rinse thoroughly with clean free running water, where area permits. Squeegee to drain or pick up with wet/dry vacuum to remove all residual soil and detergent. 4. For floors subjected to heavy traffic, apply a waterbased, non-ambering liquid floor wax or sealer. Remove floor wax periodically, with an ammoniated heavy-duty stripper – rinse and allow to dry before refinishing. Contact your local janitorial supplier for recommendations. Numerous cleaners and floor wax sealers are available. Select a reputable manufacturer and complete a test area. In areas subjected to spillage of foods, oils, fats, etc., such as in a food preparation area, schedule frequent and thorough cleanings. A simple hot cleaning solution often puts the fat residue into suspension until the cleaner cools down and the fat re-solidifies once again, leaving a slippery film on the surface. As a preventive measure, use a free rinsing detergent with plenty of water. NOTE: A slip-resistant finish is available and desired for most TUFFLEX epoxy floors. However, as the degree of non-slip characteristics increases, the ease of cleaning decreases and may require cleaning by power spray wash. REFINISHING Some owners prefers to refinish their TUFFLEX epoxy floors, if they become worn in heavy traffic areas, or when equipment is relocated, in lieu of a regular maintenance program. This is a simple operation with most floors, involving surface preparation, plus additional finish coats to restore the original new appearance. Contact your TUFFLEX Applicator for detailed information on refinishing. Periodic refinishing can, in some instances, be less expensive than a regular maintenance program. EPOXY FLOORING MAINTENANCE (06) TUFFLEX POLYMERS, LLC ♦10880 Poplar Avenue ♦ Fontana, California 92337 Phone: (909) 349-2016 ♦ (888) TUFFLEX ♦ Fax: (909) 823-6309
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