Forums Chit Chat Roof – Foam torching Reply To: Roof – Foam torching July 12, 2018 at 10:22 am #386 FUZZY 15 Posts Friend of mine has this in their house. At some point you have to replace the whole roof – tiles and everything. So it’s a cost you’ll face at some point – or have to deal with when you sell the house. So you may as well factor it in now. If it’s prohibitively expensive to do it now, it won’t be any different in the future.