Installation Of Metal Roofing Over Existing Shingles

Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh.

Installation of metal roofing over existing shingles.

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. Getting an accurate measurement will help you determine the. If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. Otherwise you will need to remove the shingles.

However you ll want to check with your local building department before you make any decisions. 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. By jamie lisse a metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. The first way is to run new underlayment over the existing shingle roof completely covering the old roof.

Another added benefit is that the layers of your old roof will further insulate your home. Get a precise measurement of your roof surface. There are really two ways to install a metal roof over a shingle roof. This provides a couple of benefits.

However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. Lay down roofing felt over the entire roof. The low weight of metal roofing is one thing that encourages this. 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 vast majority of installations of the metal roofing systems produced by my company are over existing shingles. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Yes you can install a metal roof 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.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. 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. But you must take care to install shingles correctly so they lie flat. Step by step guide step 1.

Your goal with the roofing felt is to make sure everything is as. The first one being that the new underlayment will act as a second line of defense in case water would to somehow get underneath the metal roof. Start putting the metal panels.