Buy Waterproofing Membrane | Duroproof™ PPM Polyurethane Membrane

Duroproof™ PPM is a superior performance single component liquid that rapidly form a polyurethane hybrid membrane that is high modulus, flexible, tough and best for exterior use.

Principle Characteristics

·         Easy to use because of single component

·         Combines high distension and flexible strength for excellent toughness

·         Trafficable or tack free overnight cure

·         Good polishing and water resistance

·         Good obstruction to weathering

·         Class III – elongation as per AS/NZ 4858

·         Possibility of high build application

Use Areas

·         Built up concrete roofs and decks

·         Waterproofing of external areas like balconies, podium levels and timber decking etc

·         Light traffic installation

How to prepare surface before installation

Surface must be free of dirt, oily contaminates and old membranes. Grind, sandblast concrete if need. Concrete must be strength of 20MPa and have cured for minimum 28 days. Surfaces must be dry with moisture content below 5%. Fill all holes and cracks with PU sealant. Leak control flanges should be installed around all pipe penetrations. 

Priming

Duromix Hibuild WBE Primer is best primer for general use and PU Primer is best in those conditions where concrete surface needs a primer with good penetration. 

Application

After preparing the surface, apply Duroproof™ PPM by spreader, brush or roller within 48 hours between coats to achieve an optimum intercoat bond. When dry, check for pinholes and rectify. If membrane becomes dirty between coats then clean it with Xylene. Allow 24 hours to dry before covering.

Precautions

Do not apply above 30ºC or below 5ºC ambient temperature. Make ensure before starting the job that rain is not expected between coats.  Protect waterproofing membranes against damage and action of roots.