Is It Ok To Install A 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.

Is it ok to install a metal roof over shingles. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. This method has its benefits as well. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. 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.

The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacture has testing for their roofing panels and then the metal is installed to the purlins. We get asked this question all the time. Can i install a new metal roof over shingles. 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.

If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. After all you ll be making a significant and long term investment. For instance decking isn t suitable for a third replacement regardless of condition so a third installation with the same decking won t be structurally sound. However before you decide on reroofing with a metal roof you have to keep in mind that there are specific conditions that make reroofing with a metal roof safe.