Installation Of Metal Roofing Over Existing Shingles

But you must take care to install shingles correctly so they lie flat.

Installation of metal roofing over existing shingles.

Step by step guide step 1. This provides a couple of benefits. 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 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.

Lay down roofing felt over the entire roof. If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. There are really two ways to install a metal roof over a shingle roof. 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. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Otherwise you will need to remove the shingles. However you ll want to check with your local building department before you make any decisions.

Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. Another added benefit is that the layers of your old roof will further insulate your home. Start putting the metal panels. Can i install a new metal roof over shingles.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Your goal with the roofing felt is to make sure everything is as. 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. Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones.

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. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. Get a precise measurement of your roof surface. The first way is to run new underlayment over the existing shingle roof completely covering the old roof.

Yes you can install a metal roof over shingles. The vast majority of installations of the metal roofing systems produced by my company are over existing 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.