Install Steel Roofing Directly Over Asphalt Shingles

Yes you can install a new metal roof over the top of an existing asphalt shingle roof provided there are not too many layers.

Install steel roofing directly over asphalt shingles.

If you want to install steel over asphalt your best choice is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. Metal roofing is resistant to fire rot and termites. 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. Manufacturers provide 30 year warranties on metal roofing products.

1 remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely removing the old shingles before installing the new metal roof. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing the new roof.

Steel roofing offers many benefits over slate tiles or asphalt shingles. Metal or steel roofing can be installed over existing composite asphalt shingles with the addition of a framework. 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.

However you ll want to check with your local building department before you make any decisions. Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board.