Steel Roof Panels Over Shingles

Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board.

Steel roof panels over shingles.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Installing a steel roof will cost approximately 60 per square foot. So when we talk about metal roofing over shingles how does it work. Installing steel roofing over existing roofing materials is fairly simple.

This provides a couple of benefits. 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. Some consideration for vent stacks and chimneys is required during the design process. It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same.

Place the first screw. Put the steel down directly on a vapor barrier. By jamie lisse a metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. The first way is to run new underlayment over the existing shingle roof completely covering the old roof.

There are really two ways to install a metal roof over a shingle 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. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. 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.

Our metal roofing profiles. 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. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality.

Install the roofing screws vertically along each rib in the panel.