Steel Roof Over Shingles

Next use 1 inch nails to secure some metal edging to the perimeter of the roof.

Steel roof over shingles.

Before you install metal roofing repair any damage to the wood under the shingles. Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it. A galvanized steel metal roof is highly susceptible to corrosion and rust over a period of time. If you don t want to take our word for it check with your local building department.

Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality. Advantages of metal roofs over shingles. This provides a couple of benefits. By placing metal roofing over shingles you can save in the labor costs of ripping them off while also preventing them from being thrown into landfills.

Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Yes oxygen and pollutants in water combined with the moisture create iron oxide otherwise known as rust. The first way is to run new underlayment over the existing shingle roof completely covering the old roof. Metal roofing weighs less than one pound per square foot.

Metal roofing is also available in the form of shingles. There are really two ways to install a metal roof over a shingle roof. You ll be surprised to learn that the primary cause of rusting and corrosion is water. Anatomy of a steel roof this is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

Asphalt shingles can weigh up to four pounds per square foot depending on the brand. 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. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. However you do have the option of leaving the shingles in place and installing the roofing over them if the roof is in good shape.

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. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. Otherwise you will need to remove the shingles.

A steel roof is a lifetime investment lasting 50 years or more if it s a good one. In some areas building officials only allow a re roof over one layer of shingles. The removal itself could cost anywhere from 3 to 5 per square foot.