How To Install Metal Roof On Shingles. First, the roofer creates a slat board base to support the metal roof on top of the shingles. In simple terms, if the asphalt shingles are not used to support the metal roof, then you can install a metal roof over the asphalt shingles.
This is the fastest way to install but it doesn’t provide the flattest surface for metal roofing installation. Next, use 1 ¼ inch nails to secure some metal edging to the perimeter of the roof. Metal is lighter, putting less load on your.
First, you can install a metal roof over asphalt shingles if the old one has less than four shingles’ layers.
Pros and cons for metal roofing installation Next, use 1 ¼ inch nails to secure some metal edging to the perimeter of the roof. $930 for metal roof replacement panel repairs. Here are some pros and cons.