SuperTectum
WFlex 2K

 
SuperTectum
WFlex 2K
Two-component, liquid membrane for waterproofing and protection - 1:1 by volume, polyurethane (A) and bitumen (B)





Two-component polyurethane membrane with expanded bitumen. It is founded on pure elastomeric hydrophobic polyurethane resin impregnated with chemically polymerized pure bitumen and produces a highly elastic film with strong adhesion to many types of surfaces.
Application area

• Plaster, cement and concrete slabs
• Bitumen-asphalt roll coatings
• Flat rooftops
• Terraces and balconies (under tiles)
• Flower pots and roof-top gardens
• Foundations
• Roofing vapor barrier
• Open tunnels
• Irrigation canals

- not recommended for unsound substrates or UV exposed applications.
Features and benefits
The components mix easily
Fast curing
Ability to apply in a thick layer, bubble-free
The two-component form of the product makes possible to store non-mixed parts until later use
Its low modulus gives it excellent substrate crack-bridging properties
Excellent adhesion on almost any surface, with or without the use of special primers
Excellent thermostability. Maximum operating temperature 80°C
Resistance to cold: the film remains elastic even at -40°С
Maximum elongation, high tensile strength
Good water vapor barrier properties
Can be used as a sealant for joints
Application procedure
1
May be successfully applied to concrete, fiber cement, old (but well-constructed) bitumen asphalt rolls coatings, wood, brick, metal. To get information about other surfaces, contact our Technical Department.
Requirements for a concrete substrate (standard):

• Hardness of concrete: R28 = 15Mpa.
• Concrete humidity: W <10%.
• Temperature: 5-35o C.
• Relative humidity: <85%.
2
The substrate must be dry, chemically neutral, even, strong - without cracks and damage, clean - without dust, rust, or peeling particles. Seal cracks, damage, holes with a suitable material. Traces of contamination from oil, oil substances, or chemicals must be removed.
3
For surface priming, use SuperTectum Macro Primer or SuperTectum PU Primer.
4
To begin with, open component B with bitumen and mix well with a low-speed mixer (300 r/min), particularly on the walls and bottom of the container until the material is homogenous. Then pour component B into a clean 50-liter container and stirring, add component A - resin. Carefully mix the components A and B, until the mixture is completely homogenized, while avoiding the formation of air 's bubbles. Ready (mixed) is to be used as soon as possible. Viability of the finished mixture: 30-45 minutes at 20° C.
5
Apply it with a brush, roller, spatula and airless spraying (the operating pressure of >200 bar) in a single layer. For airless spraying, the mixture can be diluted with the solvent up to 10% by weight.

Flow rate 1,5 l/m2.
General information
Packaging
Component A – 20 l
Component B – 20 l
Shelf life
It can be stored for 12 months minimum in the original unopened buckets in dry places at temperatures between 5°C to 25°C.
Safety information
Contains a small quantity of volatile flammable
solvents. Apply in well-ventilated, no smoking
areas, away from naked flames. In closed spaces use ventilators and carbon active masks. Keep in mind that solvents are heavier than air so they creep on the floor. The MSDS (Material Safety Data Sheet) is available on request.
Technical specifications
В жидкой форме (перед нанесением):
Properties
Units
Method
Specification
Viscosity (Brookfield)
Comp. A: Resin
Comp. B: Bitumen mix
cP
ASTM D2196-86, at 25°C
1500
4500
Viscosity (Brookfield) after mixing
cP
ASTM D2196-86, at 25oC
+/-3500
The specific weight of the mixture after mixing the components
g/cm3
ASTM D1475 / DIN 53217 / ISO 2811, at 20oC
+/-1
Curing time at 77° F (25° C ) and 55% RH
hours
-
+/-2
Отвержденная мембрана (после нанесения):
Properties
Units
Method
Specification
Operating temperature
°C
-
-40 to 80
Maximum short-term temperature (shock)
°C
-
150
Rigid spine
Shore A
ASTM D2240 / DIN 53505 / ISO R868
30
Tensile strength at 23°С
kg/cm2
(N/mm2)
ASTM D412 / EN-ISO-527-3
>20
>(2)
Elongation percentage at 23°C
%
ASTM D412 / EN-ISO-527-3
>1500
Residual elongation (after 300% elongation)
%
ASTM D412
<1
Thermal resistance (200 days at 80° C)
-
EOTA TR011
passed
QUV accelerated weathering test (4 hours UV, at 60° C (UVB - lamps) and 4 hours COND at 50° C)
-
ASTM G53
passed
(1000 hours)
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