Does Polyurethane foam degrade rigid EPS?
I was planning on using Dow’s Great Stuff polyurethane foam sealant to air-seal home-made EPS wind stops in my rafter bay ends to my roof deck & air chutes.
A salesperson at my local building store warned me that polyurethane foam would eventually degrade my EPS wind stops. I have been having trouble confirming this on Dow’s website.
If this is true is there another type of sealant that would work better in this situation? Thanks for your help yet again.