Metal Roof On House Over Shingles

A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.

Metal roof on house 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. Things to know about metal over shingle roof problems. Advantages of metal roofs 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.

Otherwise you will need to remove the shingles. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. Both metal and shingle roofs are great options for your next roofing project. After all you ll be making a significant and long term investment.

This method has its benefits as well. 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. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. 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.

Disadvantages of metal roofs. Anatomy of a steel roof this is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality.