Steel Roof Panels Over Shingles

This provides a couple of benefits.

Steel roof panels over shingles.

By jamie lisse a metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. So when we talk about metal roofing over shingles how does it work. Installing steel roofing over existing roofing materials is fairly simple. 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.

Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. Place the first screw. Some consideration for vent stacks and chimneys is required during the design process. However you should only install a metal roof over shingles if you have less than four layers of shingles on the 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. 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. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

A steel roof is a lifetime investment lasting 50 years or more if it s a good one. 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. Our metal roofing profiles.

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. 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. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality.

Put the steel down directly on a vapor barrier.