Dur-A-Fast Membrane
Polyurethane Methyl Methacrylate based Waterproofing Membrane
Coverage

20/ft² (1.86/m²) per Gallon @ 80.00 mils (2.0320 mm)

NMS
07 18 16
Description

Dur-A-Fast Membrane is a polyurethane modified methyl methacrylate membrane to be used in conjunction with Dur-A-Fast Traffic Bearing Waterproofing Systems. Dur-A-Fast Waterproofing Systems are a series of rapid return to service, high performance, UV resistant decorative and functional traffic bearing waterproofing systems. Dur-A-Fast Membrane is a rapid curing, highly elastomeric membrane which waterproofs the surface and creates a crack bridging, impermeable layer to protect the substrate. It is designed to be ready to top coat within 45 minutes of application. 

Advantages
  • Polyurethane modified Methyl Methacrylate based technology
  • Extremely rapid curing, ready for topcoat within 45 minutes (depending on temperature). 
  • Cold curing capability, cures down to -20°C
  • Outstanding water impermeability sealing properties
  • Excellent water immersion properties
  • High chemical resistance to acids, alkalis, salts, seawater, sewage and other compounds
  • Fast curing properties
  • Excellent low temperature flexiblity and crack bridging properties.

 

Uses

Dur-A-Fast Membrane is used as a waterproofing membrane for all Dur-A-Fast Traffic Bearing Waterproofing Systems to waterproof the substrate and provide crack bridging capabilities.  It will protect the substrate intrusion from water, chloride ion, salt and damage from chemicals. Dur-A-Fast Membrane can be used in virtually all seasons, as it can be applied down to -20oC. Dur-A-Fast Membrane is also used for balcony terraces and pedestrian walkways, parking decks, mechanical rooms, plaza, pools, recreationals decks, vehicular ramps and stadiums.

Physical Properties
 
Colour

Off White

Resin Type

Polyurethane Modified Methyl Methacrylate

Mix Ratio

Part A (resin):Part B (catalyst)

Cure Time @ 23°C
  • To touch: 30 minutes
  • To recoat: 45 minutes
  • Traffic: 4 hours
Pot Life @ 23°C

15 -20 minutes

Coverage

0.98 m²/L (40 ft²/gal) @ 1.25mm (80 mils) *varies on system*



Performance Properties
Method Results
Percent Solids

ASTM D7232

100%

V.O.C. & Absorption

ASTM D3960

0 g/L

Specific Gravity

ASTM D333

1.19 · 0.05 g/L

Mixed Viscosity

ASTM D2196

1000 cps

Abrasion Resistant

ASTM 5178-91, CS-17 wheel

75 mg, 1000 g load, 1000 cycles

Tensile Strength

ASTM D638

920 psi

Tear Strength

ASTM D624 Die C

89 lbf

Elongation

ASTM D638

520%

Low Temperature Flexibility

1/8" Mandrel @ 26°C

Pass

Water Absorption

ASTM D570

< 0.1%

Shore D Hardness

ASTM D2240

80

Pull-Off Strength of Coatings

ASTM D4541

3.35 MPa (480 psi) over primed concrete surface

Water Vapour Transmission

ASTM E96 · Procedure B

  • 0.05 grain/hr·pi²
  • w0.029 g/hr·m²
Water Vapour Permeability

ASTM E96

  • 0.20 Perm In.
  • 0.0025 ng/Pa·s·m²
Water Vapour Performance

ASTM E96

  • 4.70 x 10 - 5 perm
  • 0.028 ng/ Pa·s·m²