Old Roof New Roof Joined

Tie a new gable or hip roof to an existing gable or hip roof with valley rafters which perform the same function as ledgers.

Old roof new roof joined.

The edge of the existing concrete that was sawed should be drilled and doweled so the new concrete won t separate lift or settle from the old concrete. Figure out where the new roof will be on the old one and cut a line up the old roof shingles about 3 away above from this valley line. Find a pre screened local roofing contractor. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option a properly installed layover roof can look and function as well.

Shingles that are raised or misshapen make it hard to lay a smooth flat layer of new shingles on top. Shingle the addition roof letting the new shingles fold through the valley center and onto the old roof deck by at least 1 ft. 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. You can join the new concrete right to the old concrete this is called a concrete construction joint.

Re lay the shingles you removed from the existing roof. Cost of a new roof. 25 joinging a new roof to an existing one i have a job coming up tomorrow and i am kind of stuck. If your existing roof is fairly old there s a good chance the shingles are damaged.

Then set one new truss in place against the old roof and use it to snap chalk lines to mark the location on the old roof for diagonal 2 inch by 6 inch valley boards which will hold jack rafters to tie the roofs together. Remove shingles and other roofing material where the new roof will join down to the deck board of the old roof. Bed the end of each shingle in a 2 in wide ribbon of roofing cement placed 4 in. You ll need to pull any nails within about a foot of the.

A layer of old deteriorating shingles can make your new roof look bad. 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. Your house will probably be worth less.