Can Premise Foam be applied to an exterior wall that has insulation without expanding and damaging the wall?
I have what appears to be an active termite tube inside the house on an exterior wall. I intend to treat the soil with the trench soaking method. If I treat the location with foam in the wall, I'm concerned the expanding foam will damage the wall by expanding in the wall where there is currently insulation in the wall.
Premise Foam will expand a little bit but it will not damage insulation or your wall. Whenever you are treating termites, you should treat them directly by drilling a hole through the Sheetrock and into the stud or wood they are in. However, if the termite tube is outside and you are going to trench and treat the outside wall, that method alone will take care of the termite problem.
Answer last updated on: 08/12/2010