iquid applied membranes (LAMs) were first introduced in the early 1960 and can be broadly classified as Hot applied coatings (SBS modified asphalt) and Cold applied Coatings (acrylics, polyurethanes, polyureas, modified bitumen emulsions).
Polyurethanes and polymer modified bitumen emulsions can be either single component or two component membranes. Two component membranes offer the advantages such as fewer weather restrictions on application, more predictable curing and longer shelf life.