How To Install Metal Roofing Over Shingles

However you ll want to check with your local building department before you make any decisions.

How to install metal roofing over shingles.

Anatomy of a steel roof. Install your metal edging around the perimeter of your roof. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. What s involved in how to install metal roofing.

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. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise.

A steel roof is a lifetime investment lasting 50 years or more if it s a good one. Yes you can install a metal roof 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 steel roofing over existing roofing materials is fairly simple.

Install the roofing screws vertically along each rib in the panel. Install metal panels or shingles align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. Metal roofing is resistant to fire rot and termites. Manufacturers provide 30 year warranties on metal roofing products.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. We get asked this question all the time. 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. Use 1 1 4 inch.

Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Can i install a new metal roof over shingles. Install the metal edging.