ACTFLEX MB200
moisture barrier
One-component, fast-drying polyurethane primer and moisture vapor retarder designed to seal, strengthen, and prepare concrete and cementitious substrates.
ACTFLEX MB200 is a high-performance, pure polyurethane resin primer designed as a single-component, fast-drying bonding and moisture vapor retarder. It strengthens and seals substrates, provides moisture barrier protection up to 98% RH, and ensures superior adhesion for coatings, screeds, and membranes. Suitable for use beneath timber floors, resilient systems, and waterproofing membranes on concrete, terrazzo, natural stone, and cementitious subfloors.
specs
Technical Specifications.
Waterproof Time:
After 4 hours (full cure) – suitable for waterproofing overlay.
Coverage:
Coverage per litre: ~4.4 m²/L
Coverage per kg: ~4 m²/kg
Usable period after opening:
Single-component, ready to use – no mixing required.
Touch dry time minimum:
Absorbent Substrates: 60–90 min
Dense Substrates: 60–150 min
Vapor Pressure @ 25oC:
Moisture Barrier Resistance: up to 98% RH (2 coats, cross-rolled)
Application Temperature:
+5°C to +35°C
Shelf Life:
24 months (unopened, stored dry and frost-free)
Membrane
Classification:
Colour:
Light yellowish
Tack Free Time:
Approx. 60–90 min @ 25°C
Recoat Time:
1–4 hours depending on substrate absorbency
Elongation at Break:
Recommended
Thickness:
Typically 1–2 coats @ 0.25 mm each (wet film)
Chemical
Resistant:
Moderate (resists alkalis and standard site exposure)
Full Cure:
~4 hours
Chemical Base:
Pure polyurethane resin (solvent-free)
Cure Mechanism:
Moisture-curing, single-component polyurethane
Tear Propagation
Resistance:
Service
Temperature:
–40°C to +80°C (once cured)
Solid Contents:
~100% (solvent-free)
Bond Strength:
High adhesion to concrete, cementitious, and stone substrates
Density:
1.10–1.15 g/cm³ (approx. 1.1 kg/L)
Compressive
Strength:
Flow:
Acceptance of Cyclic Movement:
600–800 mPa·s @ 23°C (medium viscosity)
Dimensional Stability:
600–800 mPa·s @ 23°C (medium viscosity)
Control Elongation at Break:
600–800 mPa·s @ 23°C (medium viscosity)
Control Tensile Strength:
600–800 mPa·s @ 23°C (medium viscosity)
Water Immersion Elongation at Break:
600–800 mPa·s @ 23°C (medium viscosity)
Water Immersion Tensile Strength:
600–800 mPa·s @ 23°C (medium viscosity)
Detergent Immersion Elongation at Break:
600–800 mPa·s @ 23°C (medium viscosity)
Detergent Immersion Tensile Strength:
600–800 mPa·s @ 23°C (medium viscosity)
Heat Aging Elongation at Break:
600–800 mPa·s @ 23°C (medium viscosity)
Heat Aging Tensile Strength:
600–800 mPa·s @ 23°C (medium viscosity)
Field Seam Strength:
600–800 mPa·s @ 23°C (medium viscosity)
Temperature Resistance:
Water Vapour Transmission
600–800 mPa·s @ 23°C (medium viscosity)
Water Vapour Transmission:
600–800 mPa·s @ 23°C (medium viscosity)
Application Method:
600–800 mPa·s @ 23°C (medium viscosity)
VOC Content:
600–800 mPa·s @ 23°C (medium viscosity)
Mixing Ratio:
600–800 mPa·s @ 23°C (medium viscosity)
Viscosity:
600–800 mPa·s @ 23°C (medium viscosity)
Storage Temperature:
600–800 mPa·s @ 23°C (medium viscosity)
Flash Point:
600–800 mPa·s @ 23°C (medium viscosity)
UV Resistance:
600–800 mPa·s @ 23°C (medium viscosity)
Hydrostatic Pressure Resistance:
600–800 mPa·s @ 23°C (medium viscosity)
Water Vapour Transmission Rate (WVTR):
600–800 mPa·s @ 23°C (medium viscosity)
Abrasion Resistance:
600–800 mPa·s @ 23°C (medium viscosity)
Bacterial/Algae Resistance:
600–800 mPa·s @ 23°C (medium viscosity)
Application Time:
600–800 mPa·s @ 23°C (medium viscosity)
Environmental Impact:
600–800 mPa·s @ 23°C (medium viscosity)
Packaging Sizes:
600–800 mPa·s @ 23°C (medium viscosity)
Hardness:
600–800 mPa·s @ 23°C (medium viscosity)
Adhesion to Substrate:
600–800 mPa·s @ 23°C (medium viscosity)
Appearance After Curing:
600–800 mPa·s @ 23°C (medium viscosity)
Clean-up Requirements:
600–800 mPa·s @ 23°C (medium viscosity)
Certification Standards:
600–800 mPa·s @ 23°C (medium viscosity)
calculator
Coverage Calculator.
Based on a manufacturers average recommended coverage of Coverage per litre: ~4.4 m²/L
Coverage per kg: ~4 m²/kg
Required:
NaN Lr
3d
Application Model
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