How To Install Metal Roofing On Shingles

Anatomy of a steel roof.

How to install metal roofing on shingles.

It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. Install metal panels or 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 line. Put the steel down directly on a vapor barrier. Metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it.

What s involved in how to install metal roofing. Experts recommend that you work diagonally and raising each row of shingles gradually. You should start your metal shingles installation with half a shingle or in accordance with your metal shingles installation manual which should be system specific starting from the left of the starter flashing or gable. Install the roofing screws vertically along each rib in the panel.

If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. Metal roof over shingles condensation. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. If you don t know how to cut metal roofing panels you can warp them or damage the protective coating that prevents rust.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.