Can You Put Metal Roofing Over Shingles

In some areas building officials only allow a re roof over one layer of shingles.

Can you put metal roofing over shingles.

Can you put metal roof over shingles the reason why this is important is because a shingle roof is granulated very similar to sandpaper. 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. This is by far the most common way to install a metal roof. However there are some things that you will want to check out before doing it this way.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Yes you can install a metal roof over shingles. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. After all you ll be making a significant and long term investment.

As long as the plywood under the shingle roof is in good condition this way can provide many benefits. If you don t want to take our word for it check with your local building department. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. 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.

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. Other areas will allow you to re. Otherwise you will need to remove the shingles. Asphalt shingles can weigh up to four pounds per square foot depending on the brand.

However you ll want to check with your local building department before you make any decisions. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. 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.

Things to know about metal over shingle roof problems. 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. 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. On has the metal expands and contracts due to weather changes the metal will actually move.

Metal roofing weighs less than one pound per square foot. 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.