Roofing Metal Over Shingles

Asphalt shingle roofing is a dominant material for residences.

Roofing metal over shingles.

However metal roofing is surging in popularity as more aesthetic options become available. Metal is the best choice due to its very low weight per square foot and its unique design. 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. 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.

Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it. This method has its benefits as well. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. By placing metal roofing over shingles you can save in the labor costs of ripping them off while also preventing them.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. 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 are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems.

Advantages of metal roofs over shingles. If you don t want to take our word for it check with your local building department. Metal roofing weighs less than one pound per square foot. Asphalt shingles can weigh up to four pounds per square foot depending on the brand.

However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. After all you ll be making a significant and long term investment. Otherwise you will need to remove the shingles. Both metal and shingle roofs are great options for your next roofing project.

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.