How To Install Metal Roofing Over Asphalt Shingles

If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel.

How to install metal roofing over asphalt shingles.

Use 1 4 inch metal wood screws to attach the metal sheets to the wood slat board base. Yes you can install a metal roof over shingles. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles.

Make sure roof is square. We get asked this question all the time. Metal roofing sheets have to be installed one at a time. In a standing seam roof long single panels run vertically all the way from the eave to the ridge.

Install metal roofing sheets. Place a sheet from top to bottom on a section of the roof. If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. Yes you can and by doing so you save in the labor and hassle of tearing off the old roof and you won t be contributing to filling our landfills.

Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. However you ll want to check with your local building department before you make any decisions. Metal roofing is resistant to fire rot and termites.

Manufacturers provide 30 year warranties on metal roofing products. Steel roofing offers many benefits over slate tiles or asphalt shingles. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board.