ACTFLEX 700 PU PRIMER
single-component, high-build, moisture-curing polyurethane
High-build, moisture-curing polyurethane primer designed to enhance adhesion between solvent-based waterproofing membranes and joint sealants.
ACTFLEX 700 PU PRIMER is a single-component, high-build, moisture-curing polyurethane primer formulated for maximum adhesion to porous and semi-porous substrates. It is designed specifically for use with Forspec’s solvent-based polyurethane waterproofing membranes and joint sealants.
The product forms a durable intercoat bond, enhancing chemical resistance and waterproof performance while ensuring long-term stability under Forspec membrane systems.
Suitable for new and old concrete, render, masonry, timber, bricks, CFC sheeting, and Villaboard, it can also be used to reactivate or bond existing polyurethane membranes.
specs
Technical Specifications.
Waterproof Time:
3 hours @ 25°C, 50% RH (before membrane application)
Coverage:
4–6 m² per litre depending on surface porosity and application method.
Usable period after opening:
Use within the same day after opening (moisture-reactive system)
Touch dry time minimum:
Touch Dry: 30 mins @ 20°C
15 mins @ 30°C
Full Cure: 6 hours @ 25°C, 50% RH
Vapor Pressure @ 25oC:
Not a vapor barrier (moisture may cause blistering if applied over damp substrates)
Application Temperature:
10°C – 30°C
Shelf Life:
6 Months
Membrane
Classification:
Polyurethane Primer (Solvent-based)
Colour:
Translucent matte, viscous liquid
Tack Free Time:
30 minutes @ 20°C
Recoat Time:
3–6 hours depending on ambient temperature and humidity
Elongation at Break:
Good solvent resistance; not suitable for continuous UV exposure
Recommended
Thickness:
Applied as a thin uniform film (typically 100–150 microns)
Chemical
Resistant:
Full Cure:
6 hours @ 25°C, 50% RH
Chemical Base:
Moisture-curing polyurethane resin
Cure Mechanism:
Reacts with atmospheric moisture
Tear Propagation
Resistance:
High adhesion, non-elastomeric
Service
Temperature:
10°C to 60°C (once cured)
Solid Contents:
<70% (w/w)
Bond Strength:
High – compatible with solvent-based polyurethane membranes and sealants
Density:
0.80–1.00 g/mL @ 25°C
Compressive
Strength:
Flow:
Acceptance of Cyclic Movement:
Viscous, brush/roller grade consistency
Dimensional Stability:
Viscous, brush/roller grade consistency
Control Elongation at Break:
Viscous, brush/roller grade consistency
Control Tensile Strength:
Viscous, brush/roller grade consistency
Water Immersion Elongation at Break:
Viscous, brush/roller grade consistency
Water Immersion Tensile Strength:
Viscous, brush/roller grade consistency
Detergent Immersion Elongation at Break:
Viscous, brush/roller grade consistency
Detergent Immersion Tensile Strength:
Viscous, brush/roller grade consistency
Heat Aging Elongation at Break:
Viscous, brush/roller grade consistency
Heat Aging Tensile Strength:
Viscous, brush/roller grade consistency
Field Seam Strength:
Viscous, brush/roller grade consistency
Temperature Resistance:
Water Vapour Transmission
Viscous, brush/roller grade consistency
Water Vapour Transmission:
Viscous, brush/roller grade consistency
Application Method:
Viscous, brush/roller grade consistency
VOC Content:
Viscous, brush/roller grade consistency
Mixing Ratio:
Viscous, brush/roller grade consistency
Viscosity:
Viscous, brush/roller grade consistency
Storage Temperature:
Viscous, brush/roller grade consistency
Flash Point:
Viscous, brush/roller grade consistency
UV Resistance:
Viscous, brush/roller grade consistency
Hydrostatic Pressure Resistance:
Viscous, brush/roller grade consistency
Water Vapour Transmission Rate (WVTR):
Viscous, brush/roller grade consistency
Abrasion Resistance:
Viscous, brush/roller grade consistency
Bacterial/Algae Resistance:
Viscous, brush/roller grade consistency
Application Time:
Viscous, brush/roller grade consistency
Environmental Impact:
Viscous, brush/roller grade consistency
Packaging Sizes:
Viscous, brush/roller grade consistency
Hardness:
Viscous, brush/roller grade consistency
Adhesion to Substrate:
Viscous, brush/roller grade consistency
Appearance After Curing:
Viscous, brush/roller grade consistency
Clean-up Requirements:
Viscous, brush/roller grade consistency
Certification Standards:
Viscous, brush/roller grade consistency
calculator
Coverage Calculator.
Based on a manufacturers average recommended coverage of 4–6 m² per litre depending on surface porosity and application method.
Required:
20 Lr
3d
Application Model
