http://www.durotechindustries.com.au/products/external-membranes/ Durotech Industries – Manufacturer and installer of Waterproofing Coating based on polyurethane membrane, sheet membrane or elastomeric waterproofing membranes, which used to create a seamless membrane on the internal/ external walls, terraces, decks and flat roofs to protect the building structure reliably on a long term basis.