How Do You Install Metal Roofing Over Shingles

Installing steel roofing over existing roofing materials is fairly simple.

How do you install metal roofing over shingles.

Anatomy of a steel roof. Use 1 1 4 inch. However you ll want to check with your local building department before you make any decisions. Make a slat board base on top of the 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. Yes you can 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. The low weight of metal roofing is one thing that encourages this.

This method has its benefits as well. How to install a metal roof over shingles. Manufacturers provide 30 year warranties on metal roofing products. The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. 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. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Most metal shingles will be attached to the roof using metal shingle.

Install your metal edging around the perimeter of your roof. Can i install a new metal roof over shingles. Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh.

Metal roofing is resistant to fire rot and termites. What s involved in how to install metal roofing. Another added benefit is that the layers of your old roof will further insulate your home. The vast majority of installations of the metal roofing systems produced by my company are over existing shingles.

The second way to install a metal roof over a shingle roof is with the use of purlins or battens. Install the metal edging. 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.