Roll Roofing Over Old Shingles

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 over old shingles.

A champaign roofing company can install it for a reasonable price if the homeowner does not wish to do it. But you must take care to install shingles correctly so they lie flat. That s also why building codes commonly limit re roofing to no more than two layers. I would tarp the roof even if it had to go a winter then re roof in spring.

I wouldn t roll roof over shingles no. Roll roofing generally is sold in a sheet 36 inches long and 60 to 90 feet wide. Roll roofing is asphalt based like most shingles. Install a drip edge around the perimeter of the roof.

I would use steel but which ever suits ya. 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. If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. Roll roofing generally has a life expectancy of anywhere from six to 10 years.

Step by step roll roofing installation 1. 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. While this is less than the average life of more traditional roofing materials roll roofing is usually much less expensive to purchase. 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.

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.