New Roof On Old Roof

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New roof on old roof.

A slate roof is a humbling thing. The complexity of the roof. Your house will probably be worth less. 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. That s also why building codes commonly limit re roofing to no more than two layers. A properly installed layover roof can look and function as well. 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.

Jeff the roof guy showed us the copper nails. A layer of old deteriorating shingles can make your new roof look bad. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. 7 potential signs that your roof may need to be replaced.

While many shingles today are produced for durability many factors can accelerate the aging of shingles. Bald spots where granules are missing. The more peaks valleys skylights and other obstacles the roof has the higher the installation cost will be. Your roof is at least 20 years old.

Shingle edges are curled or shingle tabs are cupped. If you re going to add a roof on top of an old one it s a good idea to remove any loose shingles and apply a new layer of 30 pound roofing felt before laying the new shingles. If your existing roof is fairly old there s a good chance the shingles are damaged. Cost of a new roof.

Bed the end of each shingle in a 2 in wide ribbon of roofing cement placed 4 in. 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. Call for free estimates from roofing pros now. 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.

When old shingles are torn off new roofing paper starter shingles ridge vent and moisture barrier are installed. Shingle the addition roof letting the new shingles fold through the valley center and onto the old roof deck by at least 1 ft. Up from the valley center.