Installation Of Metal Roofing Over Existing Shingles

However you ll want to check with your local building department before you make any decisions.

Installation of metal roofing over existing shingles.

But you must take care to install shingles correctly so they lie flat. Start putting the metal panels. 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.

The first way is to run new underlayment over the existing shingle roof completely covering the old roof. If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. 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.

The low weight of metal roofing is one thing that encourages this. 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. This provides a couple of benefits. Otherwise you will need to remove the shingles.

Get a precise measurement of your roof surface. Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. Your goal with the roofing felt is to make sure everything is as. By jamie lisse a metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.

Another added benefit is that the layers of your old roof will further insulate your home. There are really two ways to install a metal roof over a shingle roof. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. 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.

Step by step guide step 1. 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. Getting an accurate measurement will help you determine the. Can i install a new metal roof over 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. Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones. Lay down roofing felt over the entire roof.