Can You Put Metal Roofing Over Shingles

A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.

Can you put metal roofing over shingles.

Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. However there are some things that you will want to check out before doing it this way. Things to know about metal over shingle roof problems. On has the metal expands and contracts due to weather changes the metal will actually move.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. This is by far the most common way to install a metal roof. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems.

Can you install metal roofing over shingles the answer is yes. Metal roofing weighs less than one pound per square foot. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. 3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof.

As you can imagine there are a lot of differing opinions on whether it is permissible to put metal over the top of other roofing materials. Can you put metal roof over shingles the reason why this is important is because a shingle roof is granulated very similar to sandpaper. Asphalt shingles can weigh up to four pounds per square foot depending on the brand. Installing a metal roof over shingles can also result in an increased chance of trapped water vapor and moisture between the new roof and old roof resulting in new mold and rot.

Yes you can install a metal roof over shingles. One big advantage to metal roofing is that it is light weight which makes it the perfect material to be installed over an existing shingle roof. In some areas building officials only allow a re roof over one layer of shingles. If you don t want to take our word for it check with your local building department.

By removing the old roof before the new roof s installation you are able to give the underlayment a thorough inspection to ensure there are no damages that could. However you ll want to check with your local building department before you make any decisions. Otherwise you will need to remove the shingles. Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles.

Both metal and shingle roofs are great options for your next roofing project. Some contractors feel that there is a problem with too much weight causing stress on the roof trusses and that condensation could be an issue.