Moisture Vapor Suppression System
EPON™ Resin 233 / EPIKURE™ Curing Agent 3393
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U.S. Department of Energy Classifications
 The ability of a material to retard the diffusion of water vapor is
measured in units known as "perms" or permeability. The International
Residential Code describes three classes of water vapor retarders:
 Class I vapor retarders :
 Class II vapor retarders :
 Class III vapor retarders:
<0.1 perms
0.1-1.0 perms
1.0-10.0 perms
 http://energy.gov/energysaver/articles/vapor-barriers-or-vapor-diffusion-retarders
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Damage Caused By Trapped Moisture
Black Mold Under Carpeting
Mold Under Ceramic Tile
Blisters under Polymer Flooring
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Damage By Trapped Moisture
Low perm concrete floor materials can fail when moisture gets trapped under:
– Polymer Flooring
– Hardwood or Laminate Flooring
– Vinyl or composite flooring
– Carpeting
– Tiles
.
Damage to polymer flooring, (epoxies and urethanes), manifests itself in many ways:
– Wood warping or mold growth.
– Mold growth under the “low perm” floor material.
– Mold in carpeting or carpet padding.
Numerous examples of this issue are available on the internet.
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Managing Moisture Vapor Transmission
 If slabs are installed without a vapor barrier underneath
or with poor installation then the risk of flooring failure increases.
 Two routes to address this issue are:
– install a flooring system that breathes.
– Install a moisture vapor suppression system and cover with material
that has a higher perm rating than the MVSS.
Polymer Flooring or high perm material
Polymer Flooring or high perm material
Moisture Vapor Suppression System
Concrete Pad
Concrete Pad
Breathable Flooring System
MVSS with flooring >0.1perms
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Turnkey Moisture Vapor Suppression System (MVSS)
- Independent Lab testing results:
Class 1 Water Vapor Suppression perm rating (< 0.1)
Perm rate lower than typical floor finish materials
Low perm rate results in longer service life/lower risk of failure.
Meets low emissions standard (Agbb)
Indoor Air Quality
LEEDS points
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ASTM E 96
Concrete Specimen being tested
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MVSS Concrete Cure Time vs Dry Film
Thickness
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EPON 233 with EPIKURE 3393
MVSS System Benefits:
–
–
–
–
–
Perm rating <0.1 perms
Superior Adhesion to Concrete
Low mix viscosity (700 cP)
Fast recoat times.
Low Emissions (low odor)
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Physical Properties Data
EPON™ Resin 233
EPIKURE™ Curing Agent 3393
Low viscosity, non-crystallizing
Epoxy resin
Modified, cycloaliphatic amine
curing agent (nonyl phenol-free)
Epoxy eq.:
160 - 168 g/equiv.
Viscosity (25 °C): 500 – 700 cP
H – active eq.:
82 g/equiv.
Viscosity (25 °C): 800 - 1200 cP
Mixing ratio (resin : hardener) [pbw] 100 : 50
Pot life: 100 gram mass (40 °C)
24 min
6 gallons
3.5 gal.
2 gal.
Recommended Packaging:
2 gal.
EPON 233
EPIKURE 3393
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Physical Properties
Shore D – Hardness
after 8 hours
at 23 °C
45
at 10 °C
<10
1 day
80
52
2 days
84
76
7 days
84
83
Surface appearance (clear coat):
at 23 °C
Good, glossy surface
at 10 °C
Glossy surface
Early Water Spot Resistance
at 23 °C
1
at 10 °C
3
(1 = good ... 5 = poor)
Suitable from 10 – 30 °C with a
recoat time of 8 to 24 hours
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Mechanical properties
Excellent mechanical properties
after 7 days at room temperature
Curing conditions
Flexural strength
E- modulus
Tensile strength
Compressive strength
Tg – DSC
7 days
[MPa]
[MPa]
[MPa]
[MPa]
[ºC]
111
3486
69
105
46
7 days
+ 5 hours 100 ºC
postcure
111
3329
64
98
60
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Test Results
Water Vapor Transmission thru Coating Over Concrete Substrate
(ASTM E 96)
 Preferred method for determining the WVT properties of materials
 Simulation of real world concrete coating performance
 Concrete mini slabs
- 1 inch thickness (accelerates testing time)
- 0.6 water / cement ratio (high WVT rate)
- 3000 to 5000 psi compressive strength (minimum standard)
<0.1 perms @16 mils DFT on 28 days cured concrete
<0.1 perms @23 mils DFT on 7 days cured concrete
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Test Results (Continued)
Pull Off Adhesion Strength of Coating on Concrete
 Tensile bond strength after two exposure intervals (ASTM E 96)
- 60 days
- 120 days
 Tensile bond strength (7 & 28 day aged concrete cure)
Both samples were beyond the range of the test equipment.
No coating delamination nor concrete failure occurred.
( >480 psi)
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Passes AgBB test Protocol
Indoor Air Quality Test
For Germany
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