EPDM Liquid Rubber Waterproofing This product is a WOW product! Up to 500% Elongation, UV stable, self leveling and can be applied when iminate rain is due. This is the real deal EPDM Liquid Rubber! Skills Posted on September 7, 2015 ← Damp Proofing/Skimming/Interior Redecoration. EPDM Membrane →