Sealants
Sealants Polysulphide and Polyurethane Sealant The concept of liquid waterproofing has existed from the early 1800s, when natural bitumen was combined with jute, straw, rag felt and other man-made materials to provide a waterproofing solution for roofs. In the early twentieth century the manufacture of liquid roof coatings became a commercial activity, with the earliest…
