The formula to calculate the roofing labor cost per square is:
RLC=TC−MCSQ
Where:
The average cost of labor per square foot for roofing ranges from $1.20 to $5.50 depending on the type of roof, but most spend about $2.80 per square foot to install asphalt shingles on a typical house. The labor cost to install or replace a roof will vary from one part of the country to another and vary depending on the type of roof being installed. The average labor price for a roofer is about $75 per hour.
Example:
Calculation:
RLC=5000−200010=300 per square