Masterpren 2004M 

MASTERPREN 2004M is a composite waterproofing membrane, consisting of a thermoplastic, modified bituminous compound, reinforced in the middle with a polyester based, non-woven fabric for optimum mechanical strength and incorporating a layer of coloured mineral granules on the exposed surface.

The modified bituminous compound is formulated using selected grades of bitumen and atactic polypropylene (APP) to achieve superior ageing properties and resistance to low temperatures. The layer of mineral granules allows the surface to be exposed to sunlight.