Can I Put Metal Roofing Over Shingles

The low weight of metal roofing is one thing that encourages this.

Can i put metal roofing 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. The vast majority of installations of the metal roofing systems produced by my company are over existing shingles. Otherwise you will need to remove the shingles. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.

Most codes now allow no more than two layers of roofing before requiring a complete tear off. Can i install a new metal roof over shingles. However once again our team never recommends doing so. 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.

However you ll want to check with your local building department before you make any decisions. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. After all you ll be making a significant and long term investment. However there are some things that you will want to check out before doing it this way.

Choose a material like steel or aluminum which are lighter metal materials rather than heavier material like copper. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. Another added benefit is that the layers of your old roof will further insulate your home.

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. 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. So if your roof has two layers it may require a complete tear off even though steel is lighter than asphalt. Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh.

Metal roofs are much lighter than shingles so they are able to be installed over an existing roof. This method has its benefits as well. 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. One big advantage to metal roofing is its light weight which means metal roofing can be installed over an existing shingle 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.