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Visqueen High Performance DPM BBA Approved is Visqueens premium grade Damp Proof Membrane maunfactured from prime virgin polymers for use as a Type A damp proof membrane as defined by BS EN 13967 2004. The DPM is yellow in colour and available centre folded in 4m x 12.5 m x 500 um roll format. The 500µm membrane is manufactured as a centre folded product to limit creases which aids jointing and welding applications on site. Centre Folded films can also help to reduce cracks found in structural concrete screeds where traditional multi-folded DPMs are used