Roll Roofing Over Old Shingles

It is easier and quicker to manufacture than shingles since it is a single piece and as a result it is a good deal cheaper.

Roll roofing over old shingles.

I would tarp the roof even if it had to go a winter then re roof in spring. I would use steel but which ever suits ya. Step by step roll roofing installation 1. Installing new roof shingles over old effectively doubles the weight of the roofing so you have to make sure your roof structure can handle the extra load.

Install a drip edge around the perimeter of the roof. A champaign roofing company can install it for a reasonable price if the homeowner does not wish to do it. If the job is done correctly with the new layer of shingles laid flat over the existing shingles the old roof cushions the new one and serves as a secondary barrier should wind or water ever break through the new shingles. Roll roofing is asphalt based like most shingles.

That s also why building codes commonly limit re roofing to no more than two layers. I wouldn t roll roof over shingles no. Use 1 5 or 1 75 inch roofing nails. While this is less than the average life of more traditional roofing materials roll roofing is usually much less expensive to purchase.

Place the top of each starter shingle firmly against the bottom of the shingle immediately above it and even with the eaves then nail it into place. Roll roofing generally is sold in a sheet 36 inches long and 60 to 90 feet wide. But you must take care to install shingles correctly so they lie flat. This aluminum flashing protects the edges of the roof sheathing.

Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones. In some instances it s used as a base material underneath traditional shingles in commercial construction.