HydroFort™ PU is a single-component Class 3 polyurethane waterproofing membrane for balconies, bathrooms, terraces, podium decks and other internal or external wet areas. It forms a seamless, highly elastic membrane with excellent crack-bridging capability and resistance to standing water.
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HydroFort™ PU is a single-component, liquid-applied polyurethane waterproofing membrane designed to form a tough, flexible and seamless barrier over properly prepared building substrates.
The cured membrane provides excellent elongation, crack-bridging capability and resistance to standing water, making it suitable for balconies, terraces, podium decks, bathrooms, wet areas, plant rooms, inverted roofs and undertile waterproofing applications.
HydroFort™ PU achieves 880% elongation and Class 3 classification when tested to AS/NZS 4858. The ready-to-use formulation eliminates on-site mixing and can be applied by brush or roller to properly prepared and primed substrates.
Correct substrate preparation and primer selection are important to membrane performance. Use HydroFort™ Polyurethane Primer on suitable dry cementitious substrates. For slightly damp substrates or concrete affected by moisture transmission, use HydroFort™ VB Epoxy Vapour Barrier in accordance with its Technical Data Sheet.
Single-Component Moisture-Curing Polyurethane
Class 3 waterproofing membrane tested to AS/NZS 4858. CSIRO test documentation available.
Ensure the substrate is sound, clean, smooth and free from dust, oil, grease and contaminants. Repair surface defects before application.
Prime suitable dry cementitious substrates with HydroFort™ Polyurethane Primer. For slightly damp substrates or concrete affected by moisture transmission, use HydroFort™ VB Epoxy Vapour Barrier in accordance with its Technical Data Sheet.
Apply HydroFort™ PU by brush or roller in two coats at approximately 0.5–0.6 L/m² per coat to achieve a total dry film thickness of approximately 1.2 mm. Allow approximately 24 hours before applying the second coat.
Allow 24–72 hours before tiling or applying compatible toppings. Pedestrian access is generally possible after approximately 24 hours.
HydroFort™ PU may discolour or chalk when exposed to direct sunlight without affecting membrane performance. Where long-term appearance is important, apply a compatible non-yellowing protective topcoat.
Suitable Surfaces
Typical Applications
15kg
What is HydroFort™ PU?
HydroFort™ PU is a single-component, liquid-applied polyurethane waterproofing membrane that forms a seamless, flexible barrier.
Is HydroFort™ PU a Class 3 membrane?
Yes. HydroFort™ PU achieved 880% elongation and Class 3 classification when tested to AS/NZS 4858.
How many coats are required?
Apply two coats at approximately 0.5–0.6 L/m² per coat to achieve approximately 1.2 mm total dry film thickness.
Which primer should I use?
Use HydroFort™ Polyurethane Primer on suitable dry cementitious substrates. For slightly damp concrete or moisture transmission, use HydroFort™ VB Epoxy Vapour Barrier.
Can tiles be installed over HydroFort™ PU?
Yes. Allow approximately 24–72 hours before applying compatible tiling systems or toppings.
Can HydroFort™ PU be exposed to sunlight?
The membrane may discolour or chalk under direct UV exposure without affecting its waterproofing performance. Use a compatible UV-stable topcoat where appearance is important.
HydroFort™ PU Technical Data Sheet
HydroFort™ PU - Safety Data Sheet AUS GHS
CSIRO_AS_NZS_4858_8141A_Membranes.pdf
