How To Install Metal Roofing Over Shingle Roof

In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles.

How to install metal roofing over shingle roof.

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. Make a slat board base on top of the shingles. The vast majority of installations of the metal roofing systems produced by my company are over existing shingles. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Install your metal edging around the perimeter of your roof. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Installing metal roofing over shingles is the best solution.

Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath. Install the metal edging. 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.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. How to install a metal roof over shingles.