How To Install Metal Roofing Over Shingles

How to install a metal roof over shingles.

How to install metal roofing over shingles.

Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality. Install the metal edging. 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.

It s the simplest and fastest way to install a metal roof. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Winter heating costs may be reduced thanks to a double layer of insulation. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

However you ll want to check with your local building department before you make any decisions. This is what it looks like when you install a steel shingle roof system over an existing asphalt 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. Install your metal edging around the perimeter of your roof.

Anatomy of a steel roof. Yes you can install a metal roof over shingles. Installing a metal roof on top of shingles can be done in three basic steps only 2 are required. A steel roof is a lifetime investment lasting 50 years or more if it s a good one.

Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. 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. A metal roof reduces cooling costs during the summer months because it can reflect the sun s rays.

Install the roofing screws vertically along each rib in the panel.