Is It Ok To Install Metal Roof Over Shingles

We get asked this question all the time.

Is it ok to install metal roof over shingles.

3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. Should old shingles be removed before new installation.

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. March 11 2020 by safe harbor roofing reroofing is the practice that involves installing a new roof over an existing one. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. Anatomy of a steel roof.

Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. What s involved in how to install metal roofing. After all you ll be making a significant and long term investment.

The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins. This method has its benefits as well.