Installing Metal Roof Over Asphalt Shingles

On this forum from angie s list this person has a strong opinion in favor of metal over asphalt shingles.

Installing metal roof over asphalt shingles.

Yes you can install a metal roof over shingles. There is absolutely no reason to remove a structurally sound asphalt roof to install a metal roof other than to add to cost. Tens of thousands of metal roofs have been done this way with no problems. After all you ll be making a significant and long term investment.

Asphalt shingles are the most popular roofing material. 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. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. 3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Some roofing contractors recommend reroofing with standing seam metal because the total roof weight is but a fraction of a standard asphalt shingle roof which helps preserve the roofing integrity. Otherwise you will need to remove the shingles. Both metal and shingle roofs are great options for your next roofing project.

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. Things to know about metal over shingle roof problems. We get asked this question all the time. Fiberglass core or matting an asphalt coating and a ceramic or stone granule surface give this material its durability.

As long as the plywood under the shingle roof is in good condition this way can provide many benefits. 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. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. The fasteners will likewise be doubled which can compromise roofing integrity.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. They are available in a variety of colors and textures are low cost and provide a traditional aesthetic. If you re considering getting a metal roof you may be wondering if you can install it over shingles. We re going to answer that question in this blog so keep reading or give our legacy service team a call at 215 798 9790.

If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems.