Guest User
I have a 3V Galvalume metal roof on my house. This roof has been installed directly over 30lb Felt. I was told that without the slip paper between the metal and felt the felt would eat a hole in the roof. Is this true?
Todd Miller
Classic Products, Inc.
This is not correct. The purpose of slip sheet is to allow the metal roofing to expand and contract. The problem with 30-pound felt is that it may stick to the back of metal roofing and then, with expansion of the roofing, the felt may tear. In your case, though, I think you have a metal roof which has through fasteners, meaning that stress is put on them during expansion and contraction and you may not have as much to worry about without a slip sheet as you would with some standing seams. Check with the manufacturer of your roofing and see what they say.
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