Installing Metal Roofing Over Cedar Shingles

Install your metal edging around the perimeter of your roof.

Installing metal roofing over cedar shingles.

This can greatly reduce the time labor and overall cost of installation as well as provide better insulation for your home. 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. It can also help dampen the noise of rain on your new metal roof. Because they are so lightweight they can easily be installed over old shingles.

Metal roofing is also available in the form of shingles. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. But now that i said that i would tell you that if it was my house i probably would and the reason is i don t want to have all those old shingles under the roof. So how to install metal roofing over shingles.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles. This method has its benefits as well. Yes you can install a metal roof over shingles.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Another added benefit is that the layers of your old roof will further insulate your home. How to install a metal roof over shingles hunker. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

However you ll want to check with your local building department before you make any decisions. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. 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. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.

Well that s why the metal roof is such like an eco friendly product because you don t have to get rid of all of that stuff to the landfills. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Make a slat board base on top of the shingles.