Metal Roof Over Shingles Insulation

Add your insulation layer.

Metal roof over shingles insulation.

While metal roofs are efficient at its ability to resist heat transfer it is exposed and absorbs just as much heat as a shingle roof. Radiant barrier spray metal roof insulation adding the metal roof insulation can be done easily when you renovate your house. No matter it is an office or a home a layer of metal roof insulation will give you a lot of benefits. This is part 1 of a 6 part video series explaining how i installed a metal roof on my house.

The layer can be installed over the existing shingles new roof decking or simply over open rafters. Advantages of metal roofs over shingles. Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems.

Metal roofing weighs less than one pound per square foot. This helps to block moisture from getting trapped between the metal roof and the sheathing. 3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof. This is by far the most common way to install a metal roof.

Use roofing felt to cover the entirety of the roof and secure it with a staple gun or nails then cover it with a breathable membrane. After all you ll be making a significant and long term investment. Asphalt shingles can weigh up to four pounds per square foot depending on the brand. Metal roofing is also available in the form of shingles.

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. Both metal and shingle roofs are great options for your next roofing project. Shingle roofs weight twice as much as a metal roof which means that it accumulates twice as much heat. Metal is the best choice due to its very low weight per square foot and its unique design.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Technically there is no difference in the insulation value of a metal or shingle roof. Disadvantages of metal roofs.

If you don t want to take our word for it check with your local building department.