Steel Roof Panels Over Shingles

Installing steel roofing over existing roofing materials is fairly simple.

Steel roof panels over shingles.

Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof. A steel roof is a lifetime investment lasting 50 years or more if it s a good one. So when we talk about metal roofing over shingles how does it work. The first one being that the new underlayment will act as a second line of defense in case water would to somehow get underneath the metal roof.

By jamie lisse a metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. Otherwise you will need to remove the shingles. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality. The first way is to run new underlayment over the existing shingle roof completely covering the old roof.

However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing the new roof. There are really two ways to install a metal roof over a shingle roof. Our metal roofing profiles.

Metal roof over shingles condensation metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Put the steel down directly on a vapor barrier. Installing a steel roof will cost approximately 60 per square foot.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. This provides a couple of benefits. 1 remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely removing the old shingles before installing the new metal roof. Install the roofing screws vertically along each rib in the panel.

It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same.