Roofing over does present some issues however.
Roof replacement cost per square foot.
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.
The average cost to replace a flat roof is 5 10 per square foot.
Most roofers will charge somewhere around 300 per square for labor.
That equates to about 1 274 to 1 754 per 200 square feet or for two squares.
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.
You can quickly estimate flat roof replacement costs for the following materials.
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.
The cost per square foot for a wood shingle roof is between 6 37 and 8 77.
It costs from 1 20 to 4 a square foot to remove and replace the roof or 1 700 to 8 400 for a typical 1 700 2 100 square foot ranch style home with a gentle slope.
Or 450 per square to replace an asphalt shingle roof on a typical single family house.
Flat roof costs 8 000 16 000 depending on the material you choose.
Installing a new roof is a time intensive project and labor costs account for a significant amount of the total installation price.
This can vary based on geographic location and labor rates in your area.