Metal Roof On Top Of Shingles

Asphalt over asphalt is not advisable.

Metal roof on top of shingles.

Metal roofing weighs less than one pound per square foot. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. This method has its benefits as well. Of course there are some considerations to keep in mind.

Technically the answer is yes you can install a metal roof on top of shingles as long as there are fewer than four layers of shingles on the roof. Metal roof over shingles condensation. The answer to the question of how to install metal roofing over shingles has many advantages among them are. This makes it a perfect material to be installed right on top of an existing shingle roof.

Why not install a metal roof over shingles. The metal used for the roof can be tin copper aluminum or steel. One important thing to remember when you re deciding what type of roof to buy is that new asphalt shingles shouldn t be placed on top of old asphalt shingles. Metal roofing can be installed over top of shingles.

In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles. Put the steel down directly on a vapor barrier. A metal roof reduces cooling costs during the summer months because it can reflect the sun s rays. Metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it.

This means the total roof weight was probably greater when the previous layer of shingles was installed than the new metal roofing. It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. It is very much like constructing a non loadbearing interior wall framework and sticking that framework on top of your roof. Asphalt shingles can weigh up to four pounds per square foot depending on the brand.

If you don t want to take our word for it check with your local building department. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. Installing metal roofing over shingles is the best solution.

Metal is the best choice due to its very low weight per square foot and its unique design. However that process can lead to a variety of complications and therefore is not recommended. Wood framework base for the metal but the way that we get around it with the steel roofing is to construct a wood framework of one by four s and then lay the metal on top of that framework. Otherwise you will need to remove the shingles.