How To Install Metal Roof On Shingles. A metal roof can be installed over a shingle roof, but you’ll need to make sure the plywood under your shingle roof is in good enough shape to handle a new metal roof over top. The roofer will build a slat board base over the.
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. As compared to an asphalt roof, a metal roof is more resilient, and it is much better at absorbing the extra heat, which should help your house stay cool. Can i install a new metal roof over shingles?
But if you are deciding whether to install metal roofing or asphalt shingles, you should weigh the pros and cons of each.
Alternatively, a metal shingles roof can be installed over the old asphalt shingles, if you do not want to tear it off, provided there is only one layer of existing shingles on the roof. It’s important to first inspect the plywood under the asphalt shingles to make sure it is in good condition. But if you are deciding whether to install metal roofing or asphalt shingles, you should weigh the pros and cons of each. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.