First of all I am new to the forum and it seems like a wealth of knowledge. We are under contract to buy a house. in the attic is sprayed Urethane(I assume) foam, with another layer of something else sprayed on top of that. This is over the entire roof deck and trusses where they attach to the roof deck. The second layer is light tan in color, brittle, and looks like concrete from the back side when removed. It also appears to have small fibrous strands in it. It is very light weight. I am not sure what it is. Any ideas? The house was built in 1978 and the foam is original with the house. Can this be some type of cellulose or is it more likely an asbestos type coating? Why would it be sprayed on top of the foam? Should I be worried? Click to Enlarge 41.08 KB Click to Enlarge 42.49 KB