Putting Metal Roofing Over Shingles

Another added benefit is that the layers of your old roof will further insulate your home.

Putting metal roofing over shingles.

This method has its benefits as well. Installing a new metal roof over an old shingled roof also affects bridger steel s warranties because the abrasions from the rocks on shingles can cause backside wear as the metal expands and contracts from both hot and cold weather. Both metal and shingle roofs are great options for your next roofing project. 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.

A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. Things to know about metal over shingle roof problems. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. This allows the new underlayment to act as a line of defense in the event that water somehow gets under the metal roof.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. 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. The first is running new underlayment over an existing shingle roof thus covering the old roof. The second benefit is that it acts as a.

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. Disadvantages of metal roofs. After all you ll be making a significant and long term investment. Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it.

Advantages of metal roofs over shingles. There are two primary methods implemented when installing metal roofing over shingles. Yes you can and by doing so you save in the labor and hassle of tearing off the old roof and you won t be contributing to filling our landfills. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.

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.