Metal Roofing Installation Over Asphalt Shingles

They can either strip off the old roof and replace it with a new asphalt roof or they can install metal roofing over the existing asphalt shingles.

Metal roofing installation over asphalt shingles.

However you ll want to check with your local building department before you make any decisions. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. Both metal and shingle roofs are great options for your next roofing project. Yes you can install a new metal roof over the top of an existing asphalt shingle roof provided there are not too many layers.

After all you ll be making a significant and long term investment. Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. 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. 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.

Unless building codes require it there is usually no need to tear off the old roof. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. 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. The vast majority of installations of the metal roofing systems produced by my company are over existing shingles.

The low weight of metal roofing is one thing that encourages this. 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. Things to know about metal over shingle roof problems.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. 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.