1. home and garden
2. home improvement and repair
3. roofing

Purtop
System Deck
SPRAY-APPLIED HYBRID POLYUREA OR PURE POLYUREA-BASED
WATERPROOFING SYSTEM FOR TRAFFICKED ROOFS AND BRIDGES
AND VIADUCT DECKS
PRODUCTS USED FOR THE SYSTEM:
Purtop 400 M - Purtop 1000 - Primer SN - Quartz 0.25 - Mapefloor I 914 Triblock P - Primer M - Quartz 0.5 - Purtop Primer Black - Quartz 1.2
DESCRIPTION
AND AREAS OF USE
PURTOP SYSTEM DECK is a
waterproofing system based on
PURTOP 400 M two-component,
solvent-free, hybrid polyurea
membrane and PURTOP 1000
two-component, solvent-free, pure
polyurea membrane. Thanks to its
excellent tear strength, exceptional
elasticity and chemical resistance,
it is extremely versatile and suitable
for numerous types of trafficked
roofs, as well as trafficked surfaces
typically found in a wide range of
infrastructures.
MAPEI has created a letter and
number coding system, based on
the type of substrate and type of
finish, to identify the various types of
structure that can be waterproofed
with PURTOP SYSTEM DECK.
For any applications not included
in this data sheet, please contact
the MAPEI Technical Services
Department to find the most
appropriate technical solution.
PURTOP SYSTEM DECK
is divided into the following
sub-systems:
1. CONCRETE
in combination with various finishes:
A. INDUSTRIAL FLOORING
B. SELF-LOCKING BLOCKS
C. ASPHALT
(For example, PURTOP
SYSTEM DECK 1B stands for a
waterproofing system on a concrete
substrate, 1, with a self-locking
block finish, B).
PERFORMANCE AND
ADVANTAGES
• Thanks to the capacity of
PURTOP 400 M and PURTOP
1000 to adhere to various types
of existing trafficked roofs and
decks, it may be used to repair the
waterproofing layer on many types
of substrate.
Examples of trafficked surfaces waterproofed with Purtop System Deck
Purtop
System Deck
• Rapid installation due to the
immediate waterproofing and set
to receive foot traffic.
• Due to the high mechanical strength
and high static and crack-bridging
capacity of PURTOP 400 M
and PURTOP 1000, the system
may be applied on any type of
structure.
• PURTOP 400 M and
PURTOP 1000 are applied in
thin layers (2 mm), so no additional
loading: the only load, therefore, is
due to the type of finish used.
• PURTOP membranes have
excellent resistance to high
temperatures, so asphalt may
be poured directly on to it.
SUBSTRATE
1 CONCRETE
Check the substrate to make sure it
is suitable for applying the
A INDUSTRIAL FLOORING
Industrial flooring
PE sheet (min. thickness 0.8 mm)
TNT (> 400 g/m²)
Purtop 400 M/Purtop 1000
Primer SN dusted
with Quartz 0.5
Concrete
substrate
waterproofing system. Prepare
the surface with a sanding
machine or by shot-blasting to
remove all traces of oil, grease,
dirt and any other material which
could compromise the adhesion of
the waterproofing system. Remove
all dust and any loose parts from
the substrate to leave a dry, porous,
slightly rough surface with no
contaminants.
Repair any hollows, or cavities and
form the slope or camber required
using a suitable product from the
MAPEGROUT range.
After preparing the surface as
described above, apply a layer
of PRIMER SN mixed with 20%
QUARTZ 0.25 with a smooth
trowel or rake and then dust the
surface with QUARTZ 0.5.
Alternatively, apply two coats of
MAPEFLOOR I 914 two
components epoxy primer. Lightly
dust the primer while it is still fresh
with QUARTZ 1.2.
If the level of residual humidity in
the substrate is higher than 4%,
and it is not possible to wait until it
drops to a lower value, apply one or
two coats of TRIBLOCK P threecomponent, epoxy-cementitious
primer with a trowel or roller,
depending on the condition of the
substrate.
If there are metal elements in the
concrete substrate, carry out the
following treatment. Check the
state of the substrate and dry sandblast the surface to grade SA 2½
according to Swedish Standards
or prepare the surface using an
alternative method, such as with
a scrubbing-action or percussionaction cleaning machine. After
treating the metallic surfaces, apply
a coat of PRIMER EP RUSTOP
two-component, epoxy primer with a
brush, roller or airless spray.
If there are structural joints in the
substrate, they must be treated
and waterproofed first. For further
information, we recommend
contacting the MAPEI Technical
Services Department.
MEMBRANES
PURTOP 400 M and PURTOP 1000
Apply PURTOP membranes at a
temperature of between +5°C and
+40°C.
Before applying a PURTOP
membranes, remove all traces of dust
from the surface with an industrial
vacuum cleaner. The temperature
of the substrate must be at least
3°C higher than the dew-point
B SELF-LOCKING BLOCKS
Self-locking blocks
Sand installation layer
PE sheet (min. thickness 0.8 mm)
TNT (> 400 g/m²)
Purtop 400 M/Purtop 1000
Primer SN dusted
with Quartz 0.5
Concrete
substrate
temperature and the level of relative
humidity must be no higher than 4%.
B SELF-LOCKING BLOCKS
(See Picture).
To apply a PURTOP 400 M or
PURTOP 1000 membrane, use a
high-pressure, bi-mixer industrial
sprayer with flow and temperature
control, fitted with a self-cleaning
spray gun.
Apply PURTOP membranes in
a continuous layer over all the
horizontal surfaces and upstands.
C ASPHALT
When the membrane is dry, make
sure the surface is clean and use
a roller or airless spray gun to
apply PURTOP PRIMER BLACK
one-component, solvent-based
primer specifically formulated to
improve the adhesion of asphalt
on surfaces waterproofed with
membranes from the PURTOP
range.
While the primer is still fresh, dust
the surface with QUARTZ 1.2 to
further improve adhesion of the
asphalt.
Before applying the asphalt,
spread on a hot bonding layer
made generally from bitumen
modified with styrene-butadiene
rubber (SBR).
If application of PURTOP 400 M
or PURTOP 1000 is interrupted
and then taken up again after the
maximum covering time (2 hours),
apply a coat of PRIMER M and
form an overlap at least 30 cm wide.
FINISHING
A INDUSTRIAL FLOORING
(See Picture).
NOTES
For further information on the products which make up the
system, please refer to the relative Technical Data Sheet
for each product. Recommendations regarding safe use
and handling of the products are contained in the Safety
Data Sheet for each single material in the cycle.
If the system is applied on different surfaces to those
mentioned above, or in climatic conditions and/or for
final uses not mentioned in the Technical Data Sheet
for the system, please contact the MAPEI Technical
Services Department.
Bridge deck waterproofed with Purtop 400 M
C ASPHALT
Bitumen conglomerate
Hot bonding layer
Purtop Primer Black
dusted with Quartz 1.2
Purtop 400 M/Purtop 1000
Primer SN dusted
with Quartz 0.5
Concrete
substrate
Purtop
System Deck
WATERPROOFING MEMBRANES
PURTOP 400 M
PURTOP 1000
A/B ratio (in weight):
100/106.8
100/103
A/B ratio (in volume):
100/100
100/100
Gel time at +70°C (seconds):
4-6
<4
Application temperature range (°C):
65-85
65-85
Application pressure (bar):
160-200
160-200
Ambient application temperature range (°C):
from +5°C to +40°C
from +5°C to +40°C
Tensile strength (DIN 53504) (N/mm²):
14
25
Elongation at failure (DIN 53504) (%):
400
350
Tear strength (ISO 34-1) (N/mm):
55
96
Shore A hardness (DIN 53505):
70
90
Glass transition temperature (°C):
-50
-46
APPLICATION DATA (A+B)
MECHANICAL CHARACTERISTICS (after 7 days at +23°C)
CONSUMPTION [kg/m²]
Min-Max COVERING TIMES [hours]
(for a temperature between +15°C and +25°C)
Primer SN
0.30-0.60
12-24
Mapefloor I 914
0.50-0.60
12-24
Triblock P
0.25-0.50
2-7 days
Primer EP Rustop
approx. 0.20
6-24
Purtop 400 M
2.0 (for 2 mm thick layer)
30 mins-2
Purtop 1000
2.0 (for 2 mm thick layer)
30 mins-2
0.20-0.30
1-3
PRODUCT
Primer
Membrane
Finishing
Purtop Primer Black
YIELD
The consumption figures indicated above are for a cycle applied at a temperature between +15°C and +25°C on a surface
treated as indicated in this Technical Data Sheet. Rougher surfaces and lower temperatures lead to higher consumption
rates. The consumption of PRIMER SN in particular may vary, depending on the type and depth of preparation carried
out on the substrate.
6111-10-2012 (GB)
www.mapei.com
C.P. MK 201030