We have a potential client who wants a commercial tear off and replace. It’s a small business (25sq). We went up to the roof the other day to take a core sample and found that there is currently two roofs on it, the first being a tar and gravel and the second and top layer is a torch down.
I want to provide an alternative option to the client in case they don’t like the price of a double tear off and install. A roof over is not an option because city code only allows two layers max.
My question is, is tearing off the top torch down layer only and roofing over the tar and gravel with polyiso board and TPO a viable alternative?
It should also be noted that I hate roof overs and would much rather go to the deck. But considering its a small business, and its not an insurance job I want a last resort if the property owner absolutely can not afford a full tear off. I am of course going to push for the full tear off first.