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.

Step 1 measure the roof to determine how much metal you will need. You can install a metal roof on any shed roof fairly easily except a barn style gambrel roof with overhang. 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. Next use 1 inch nails to secure some metal edging to the perimeter of the roof. 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. Install with 1 4 inch metal wood screws at a distance of every two feet.

But it can still be done as demonstrated in these photos. This is by far the most common way to install a metal roof. The metal used for the roof can be tin copper aluminum or steel. 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. 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. Your metal trim will go along the roof s edges as well as the top ridge. Lay the new metal roof right on top of an old roof or remove the old one first.

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. Before you install metal roofing repair any damage to the wood under the shingles. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. Use notching scissors to notch the metal in the middle so that it will bend over the ridge.

Install the metal trim. This is because the overhang has a negative angle and needs careful flashing to prevent that joint from leaking. Metal roofs look great and will last forever.