Installing Metal Roof Over Shingles On Shed

In a standing seam roof long single panels run vertically all the way from the eave to the ridge.

Installing metal roof over shingles on shed.

This is by far the most common way to install a metal roof. Metal roofs look great and will last forever. Step 1 measure the roof to determine how much metal you will need. Your metal trim will go along the roof s edges as well as the top ridge.

As long as the plywood under the shingle roof is in good condition this way can provide many benefits. 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. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. The metal used for the roof can be tin copper aluminum or steel.

You can install a metal roof on any shed roof fairly easily except a barn style gambrel roof with overhang. But it can still be done as demonstrated in these photos. 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. 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.

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. Install the roofing screws vertically along each rib in the panel. Before you install metal roofing repair any damage to the wood under the shingles. Use notching scissors to notch the metal in the middle so that it will bend over the ridge.

Installing metal roofing over shingles is the best solution. Install the metal trim. 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. Then cover the entire roof with a layer of insulation and secure it with a staple gun.

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. Install with 1 4 inch metal wood screws at a distance of every two feet.