You can quickly estimate flat roof replacement costs for the following materials.
Roof replacement per sq ft.
A recent quote from home depot for replacing a 2 000 square foot roof with a new asphalt roof was 21 481 which is 1 074 per square or 10 74 per square foot.
Roofing over does present some issues however.
The average cost to replace a flat roof is 5 10 per square foot.
Or 450 per square to replace an asphalt shingle roof on a typical single family house.
Metal roofs such as steel panels offer a long service life and are extremely durable.
Steel panels cost 300 800 per square.
In total an asphalt shingle roof could cost 25 000.
However some roofing companies may charge upwards of 1 000 a square for an asphalt shingle roof.
That said on average most contractors will charge between 3 50 and 5 50 per square foot or 350 to 550 per square 100 sq ft to install or replace an asphalt shingle roof on a typical house.
Single ply membranes tpo pvc epdm rubber.
Another quote from lowe s for a 1 650 square foot home was 16 800 which is 1 018 per square or 10 18 per square foot.
The cost of a new asphalt shingle roof is on average nationwide 260 to 280 per roofing square with new roofs using architectural shingles ranging from 275 to 300 per square.
Roofing over costs around 2 to 3 per square foot as opposed to the average full replacement cost of 4 50 so roofing over a 1 500 square foot roof may only cost 3 000 to 4 500.
Steel can also be painted to match the style of the home.
Thus at the mid point of the above price range you can expect to pay about 4 50 per sq.