How Do I Install A Metal Roof Over Shingles

Make a slat board base on top of the shingles.

How do i install a metal roof over shingles.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. When you install the panels you will have to cut the valleys by hand. Can i install a new metal roof over shingles. Install your metal edging around the perimeter of your roof.

Before you can begin to update your roof you will have to get an accurate. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Install the metal edging.

Overlap the rises and dips if using corrugated sheets or lay flat sheeting with a slight vertical overlap. Measure the length width and rise of one section your roof. The vast majority of installations of the metal roofing systems produced by my company are over existing shingles. How to install a metal roof over shingles hunker.

The low weight of metal roofing is one thing that encourages this. 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. 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. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. If you must climb onto the roof to measure the space be. Put the steel down directly on a vapor barrier.

Install the roofing screws vertically along each rib in the panel. Metal roof over shingles condensation metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it. 5install metal panels or shingles. You can pre measure closely and install them as you go along or you can cut the panels close leaving out some of the screws and then come back later.

Another added benefit is that the layers of your old roof will further insulate your home. Screw the first sheet in the center as well as the edges. A steel roof is a lifetime investment lasting 50 years or more if it s a good one. 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.

Always try to measure from the ground first in order to keep yourself safe. Screw the metal sheets into the slat board with a wood screw every 2 feet along the edges.