Icynene insulation can be sprayed or injected into walls, ceilings, floors and crawlspaces to deliver superior insulation and air-sealing results. It is ideal for wood and steel frame, brick and concrete constructions. Icynene never collapses with time since it is extremely light and strongly adheres to the substrate. The product is sprayed on to walls or under the floor where the foam quickly expands, reducing cold spots and blocking air infiltration. Icynene contains 99% pure air and no pollutant or hazardous substances. It can also reduce noise levels that originate from the other side of the wall.