Is It Ok To Install Metal Roof Over Shingles

Should old shingles be removed before new installation.

Is it ok to install metal roof over shingles. 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 is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. March 11 2020 by safe harbor roofing reroofing is the practice that involves installing a new roof over an existing one. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems.

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. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. Can i install a new metal roof over shingles.

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. Things to know about metal over shingle roof problems. What s involved in how to install metal roofing. We get asked this question all the time.

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. Both metal and shingle roofs are great options for your next roofing project.