Installing A Metal Roof Over Shingles 2016

How to install a metal roof over shingles hunker.

Installing a metal roof over shingles 2016. Get a precise measurement of your roof surface. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing the new roof. Getting an accurate measurement will help you determine the exact amount of material.

1 remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely removing the old shingles before installing the new metal roof. This method has its benefits as well. 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. Install your metal edging around the perimeter of your roof.

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. Flashing is metal trim that fits over joints where two sections of roof meet. It helps direct water away from the. Install rubber or foam.

However you ll want to check with your local building department before you make any decisions. The flashing should overlap the edge of the roof by one inch to help direct. Things to know about metal over shingle roof problems. Install the metal edging.

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. Make a slat board base on top of the shingles. Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh.

Bend the flashing into a v shape to fit over the top roof ridge and the corners where the panels meet. Can i install a new metal roof over shingles. Lay down roofing felt over the entire roof. The vast majority of installations of the metal roofing systems produced by my company are over existing shingles.

Another added benefit is that the layers of your old roof will further insulate your home. Start putting the metal panels into place. The low weight of metal roofing is one thing that encourages this. 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.