How To Install Metal Roofing Over Shingles

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

How to install metal roofing over shingles.

What s involved in how to install metal roofing. 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. Use 1 1 4 inch. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality.

A steel roof is a lifetime investment lasting 50 years or more if it s a good one. Install the roofing screws vertically along each rib in the panel. However you ll want to check with your local building department before you make any decisions. A metal roof reduces cooling costs during the summer months because it can reflect the sun s rays.

Winter heating costs may be reduced thanks to a double layer of insulation. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. It s the simplest and fastest way to install a metal roof. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.

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. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Yes you can install a metal roof over shingles.

Make a slat board base on top of the shingles. How to install a metal roof over shingles. Anatomy of a steel roof. Installing a metal roof on top of shingles can be done in three basic steps only 2 are required.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.