Installing Metal Roofing Over Shingles

Metal roofing is also available in the form of shingles.

Installing metal roofing over shingles.

Install your metal edging around the perimeter of your roof. Installing steel roofing over existing roofing materials is fairly simple. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Some consideration for vent stacks and chimneys is required during the design process.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. How to install a metal roof over shingles. Make a slat board base on top of the shingles. Use 1 1 4 inch.

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. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Another added benefit is that the layers of your old roof will further insulate your home.

Yes you can install a metal roof over shingles. Installing a steel roof will cost approximately 60 per square foot. Install the metal edging. 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.

Make sure roof is square. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. 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. It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow.