How To Put A Metal Roof On A Shingle Roof

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

How to put a metal roof on 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 roofing is also available in the form of shingles. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Put the steel down directly on a vapor barrier. It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. Anatomy of a steel roof.

Attach them to your roof with 3 inch wood screws in each corner. To vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath. 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. Move from bottom to top.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. What s involved in how to install metal roofing. A steel roof is a lifetime investment lasting 50 years or more if it s a good one.