How To Install Metal Roofing Over Old Shingles

Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

How to install metal roofing over old shingles. Install the metal edging. How to install a metal roof over shingles. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.

Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath. Metal roofing is much more difficult to install than asphalt shingles. Install your metal edging around the perimeter of your roof. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. If you install your metal roof over a leaky or buckling roof it will lead to an expensive repair job. Another added benefit is that the layers of your old roof will further insulate your home. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.

Use 1 1 4 inch. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality. A steel roof is a lifetime investment lasting 50 years or more if it s a good one. Can i install a new metal roof over shingles.

Yes you can and by doing so you save in the labor and hassle of tearing off the old roof and you won t be contributing to filling our landfills. Make a slat board base on top of the shingles. It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow. A professional can prevent you from making costly or dangerous mistakes.