Metal Roofing Over Shingles System

Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it.

Metal roofing over shingles system.

After all you ll be making a significant and long term investment. It may be possible to install metal roofing over a single layer of shingles but if there is more than one layer already on the roof it may be necessary to tear off in order to be code compliant. 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. In terms of building codes many municipalities now have placed limits.

Asphalt shingles can weigh up to four pounds per square foot depending on the brand. What to consider when installing a metal roof over shingles the metal roof design. Metal is the best choice due to its very low weight per square foot and its unique design. Metal roofing weighs less than one pound per square foot.

They have always been popular on barns commercial buildings and. Some manufacturer warranties will not cover the metal roof if you install. Metal roofs have a long history of use. Parts of the roofing system may have water damage and these issues would have to be repaired or replaced.

Advantages of metal roofs over shingles. In addition you need to think about how long the roof is going to last. How to install metal roofing over shingles issues you might encounter. A metal roof can very easily be installed over a traditional shingle roof but it is essential to make sure that the plywood is in good condition.

Directly on top of shingles no underlayment. If your asphalt shingle roof has leaks those problems need to be addressed. When installing metal roofing over asphalt shingles there are a couple of options. Manufacturer warranty and specifications.

Prior to installing a metal roof over an existing shingle roof fix any rotten wood sheeting or rafters. Both metal and shingle roofs are great options for your next roofing project. If the roof is relatively level and in sturdy condition you can install directly on top of shingles without underlayment but it is not recommended. Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it.

By placing metal roofing over shingles you can save in the labor costs of ripping them off while also preventing them. Problems may arise when doing this. If you don t want to take our word for it check with your local building department.