spray foam roofing over TPO

Can You Install a Spray Foam Roof Over TPO?

Greg PalyaSpray Polyurethane Foam Roofing

  This question has come up a few times through the website and it’s finally time to answer. The quick answer is No. You cannot apply spray foam over a TPO roof. However, if you install a cover board over TPO, you can apply spray foam to that cover board. So, I guess the longer answer is Yes. You can …