That depends on many factors:
Size or footage of the roof
Pitch or inclination of the roof
Amount of mold or dirt it has
Type of surface, tiles, shingles, metal.
Height of the roof
Gutters present or absent
Method used: H-Cl or just water
Most companies charge a minimum for just taking the job, and then, they add to the price depending on how the estimator balances the factors mentioned above. A rough estimation indicates most companies charge between 40 cents to 70 cents per square foot of roof.
Comments