Installing Metal Roofing Over Shingles

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.

Installing metal roofing over shingles.

How to install a metal roof over shingles. Installing steel roofing over existing roofing materials is fairly simple. 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. Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board.

Metal roofing is also available in the form of shingles. However you ll want to check with your local building department before you make any decisions. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Install your metal edging around the perimeter of your roof.

Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Yes you can install a metal roof over shingles. Another added benefit is that the layers of your old roof will further insulate your home.

Install the metal edging. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Make a slat board base on top of the shingles. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.

Installing a steel roof will cost approximately 60 per square foot. Use 1 1 4 inch. Can i install a new metal roof over shingles. Some consideration for vent stacks and chimneys is required during the design process.