How To Put A Metal Roof On A Shingle Roof

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.

How to put a metal roof on a shingle roof.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Move from bottom to top. 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. Anatomy of a steel roof.

A steel roof is a lifetime investment lasting 50 years or more if it s a good one. 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. 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. To vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.

It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. Attach them to your roof with 3 inch wood screws in each corner. Put the steel down directly on a vapor barrier. What s involved in how to install metal roofing.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Make a slat board base on top of the shingles. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.