New Roof On Old Roof

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.

New roof on old roof.

That s also why building codes commonly limit re roofing to no more than two layers. The more peaks valleys skylights and other obstacles the roof has the higher the installation cost will be. A slate roof is a humbling thing. Your house will probably be worth less.

Your roof is at least 20 years old. Call for free estimates from roofing pros now. Bald spots where granules are missing. The actual cost will vary depending on whether it is a composite asphalt shingle roof or a fiber cement concrete composite shingle installation.

7 potential signs that your roof may need to be replaced. Jeff the roof guy showed us the copper nails. The roof of a typical two story 2 000 square foot house with a gable roof will consist of less than 1 500 square feet of roofing area or about fifteen squares. Shingle the addition roof letting the new shingles fold through the valley center and onto the old roof deck by at least 1 ft.

Replacing an asphalt roof with new shingles will cost between 5 400 and 9 000 or an average of 7 211 for a 2 000 square foot home not including old roof removal. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. Ranch homes for example are much easier to roof than tudor or victorian styles. Up from the valley center.

Re lay the shingles you removed from the existing roof. The one we re putting on the old farmhouse is pennsylvania blue black and it s meant to last at least a hundred years. Bed the end of each shingle in a 2 in wide ribbon of roofing cement placed 4 in. Shingles that are raised or misshapen make it hard to lay a smooth flat layer of new shingles on top.

While many shingles today are produced for durability many factors can accelerate the aging of shingles. If your existing roof is fairly old there s a good chance the shingles are damaged. Shingle edges are curled or shingle tabs are cupped. Find a pre screened local roofing contractor.

Cost of a new roof. When old shingles are torn off new roofing paper starter shingles ridge vent and moisture barrier are installed. A properly installed layover roof can look and function as well.