Roofing Metal Over Shingles

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

Roofing metal over shingles.

The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins. By placing metal roofing over shingles you can save in the labor costs of ripping them off while also preventing them. Now there are metal shingles and panels that imitate materials like slate tile wood shake and even asphalt. It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow.

If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. Metal roofing weighs less than one pound per square foot. Reroofing with metal some roofing contractors recommend reroofing with standing seam metal because the total roof weight is but a fraction of a standard asphalt shingle roof which helps preserve the roofing integrity.

However metal roofing is surging in popularity as more aesthetic options become available. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Asphalt shingle roofing is a dominant material for residences. Metal is the best choice due to its very low weight per square foot and its unique design.

The second way to install a metal roof over a shingle roof is with the use of purlins or battens. Things to know about metal over shingle roof problems. Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it. Advantages of metal roofs over shingles.

If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. Both metal and shingle roofs are great options for your next roofing project. Asphalt shingles can weigh up to four pounds per square foot depending on the brand. In a standing seam roof long single panels run vertically all the way from the eave to the ridge.

This method has its benefits as well.