Installing Metal Roof Over Shingles On Shed

By removing the old roof before the new roof s installation you are able to give the underlayment a thorough inspection to ensure there are no damages that could cause leaks or other issues with your new roof.

Installing metal roof over shingles on shed.

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. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. This is by far the most common way to install a metal roof. Install with 1 4 inch metal wood screws at a distance of every two feet.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Next use 1 inch nails to secure some metal edging to the perimeter of the roof. This is because the overhang has a negative angle and needs careful flashing to prevent that joint from leaking. Then cover the entire roof with a layer of insulation and secure it with a staple gun.

In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles. But it can still be done as demonstrated in these photos. Use notching scissors to notch the metal in the middle so that it will bend over the ridge. The metal used for the roof can be tin copper aluminum or steel.

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. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Before you install metal roofing repair any damage to the wood under the shingles. Either way a metal roof can add years to a shed because it is impervious to bugs and animals and it weathers well in every climate.

Install the metal trim. Metal roofs look great and will last forever. 3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof. Installing a metal roof over shingles can also result in an increased chance of trapped water vapor and moisture between the new roof and old roof resulting in new mold and rot.

You can install a metal roof on any shed roof fairly easily except a barn style gambrel roof with overhang. Install the roofing screws vertically along each rib in the panel. Step 1 measure the roof to determine how much metal you will need.