Steel Roof Over Shingles

A steel roof is a lifetime investment lasting 50 years or more if it s a good one.

Steel roof over shingles.

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. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. 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. Then cover the entire roof with a layer of insulation and secure it with a staple gun.

There are really two ways to install a metal roof over a shingle roof. If you don t want to take our word for it check with your local building department. This provides a couple of benefits. Advantages of metal roofs over shingles.

Metal roofing weighs less than one pound per square foot. Next use 1 inch nails to secure some metal edging to the perimeter of the roof. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. 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.

In some areas building officials only allow a re roof over one layer of shingles. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality. You ll be surprised to learn that the primary cause of rusting and corrosion is water. Before you install metal roofing repair any damage to the wood under the shingles.

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. Asphalt shingles can weigh up to four pounds per square foot depending on the brand. The removal itself could cost anywhere from 3 to 5 per square foot. The first way is to run new underlayment over the existing shingle roof completely covering the old roof.

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. The first one being that the new underlayment will act as a second line of defense in case water would to somehow get underneath the metal roof. A galvanized steel metal roof is highly susceptible to corrosion and rust over a period of time. Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it.

Metal roofing is also available in the form of shingles. Replacing shingles with metal roofing is not necessarily difficult but it will require labor and time. Yes oxygen and pollutants in water combined with the moisture create iron oxide otherwise known as rust.