Can You Put A Metal Roof Over Shingles
Camila Farah
However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.
Installing a metal roof over shingles can also result in an increased chance of trapped water vapor and moisture between the new roof and old roof resulting in new mold and rot. 3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof. This is by far the most common way to install a metal roof. However there are some things that you will want to check out before doing it this way.
By removing the old roof before the new roof s installation you are able to give the underlayment a thorough inspection to ensure there are no damages that could cause leaks or other issues with your new roof. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. One big advantage to metal roofing is its light weight which means metal roofing can be installed over an existing shingle roof. The answer is no you don t need to tear all the shingles off the roof because metal roofing can be installed on top of them.
That s why metal is the perfect material especially for roofing on top of shingles. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.
Source : pinterest.com