Closed cell foam is called closed cell foam because when it hits the surface to which is is applied, the molecule expand to a fixed size. The result is a dense, tough, sound resistant insulation.
Open Cell Foam
Open cell foam feels just like a Mr. Clean Magic Eraser. It is soft, spongy and very pilable.
WATER is part of the problem!
When it comes to Spray foam in our area - Just Say NO!
Whenever we have encountered a Spray Foam Insulation operator, or a product representative, they seem to avoid the main question: Where does water go when a leak happens and you have spray foam insulation?
WATER is a major conducive condition for termites. What you see in the pictures below is what happens when there is a water leak in an attic with spray foam insulation. In this particular case, some 4-legged creature(s) (possum, racoon, host of squirrels, etc.) had been making their homes in the insulation. Clearly, it also had some major blood loss. There were more than 7 spots in the house where water leaked in and resulted in the blood splatter you see above.
We did not take a picture of where the water had collected between the paint and the drywall. We were afraid the flash would make the enormous tear drop full of water explode!
Termites Use Spray Foam for their Tubes!
Termites in Foam Board
Hadley Termite & Pest Control, Inc. Copyright (c) 2019