How To Install Roll Roofing Over Shingles

Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option.

How to install roll roofing over shingles.

It has a life expectancy of anywhere from six to 10 years but it s fairly inexpensive. Roll roofing is asphalt based like most shingles. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. It can be installed simply and requires only nails and roofing cement.

There are three systems including glue down torch down and peel and stick. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. Roll roofing is often installed over bare wood sheathing or sheathing that has been painted with a primer. Roll roofing is made from the same asphalt composition material as shingles and it s easier to install.

Roll roofing is a good choice for covering an existing roof. All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof. Roll roofing generally is sold in a sheet 36 inches long and 60. If you install roll roofing using the double coverage method it will last longer.

Installing roll roofing is always an appealing option for homeowners because it is easy to install and much less expensive than other roofing. A champaign roofing company can install it for a reasonable price if the homeowner does not wish to do it. Applying roofing felt first will better protect the sheathing against condensation as well as against leaking. 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 a lightweight roofing material that s sold in a large roll. How to install a roof over an existing roof.