As a roofing contractor, accurately calculating labor costs is vital for your business’s success. It ensures you can provide competitive quotes to clients while maintaining profitability. In this blog post, we’ll break down the process of calculating labor costs for roofing projects in a simple and easy-to-understand manner.

Understanding Labor Costs

Labor costs are a significant portion of the expenses for any roofing project. They include the wages or salaries of your roofing crew, as well as related costs such as taxes, insurance, and benefits.

To calculate labor costs effectively, follow these steps:

Step 1: Determine Hourly Wages

Start by identifying the hourly wages or salaries of your roofing crew members. This will vary depending on their experience, location, and specific roles. For example, skilled roofers may command a higher hourly rate than entry-level workers.

Example: Let’s say you have three roofers working on a project. Roofer A earns $20 per hour, Roofer B earns $18 per hour, and Roofer C, who is your apprentice, earns $15 per hour.

Step 2: Calculate Labor Hours

Estimate the number of labor hours required to complete the roofing project. This depends on the project’s size, complexity, and the efficiency of your crew.

Example: If your project is expected to take three days, with eight hours of work each day, you’ll have a total of 24 labor hours (3 days x 8 hours/day).

Step 3: Account for Additional Labor Costs

Don’t forget to include additional labor-related costs:

  • Taxes: Calculate any payroll taxes you need to withhold or contribute to. This varies by location and can include federal, state, and local taxes.
  • Insurance: Factor in insurance premiums for your crew, which can include workers’ compensation and liability insurance.
  • Benefits: If you provide benefits like health insurance or retirement contributions, include these expenses.

Example: Let’s assume the total additional labor costs (taxes, insurance, and benefits) amount to $5 per labor hour.

Step 4: Calculate Total Labor Costs

Now, you can calculate the total labor costs for your roofing project using the following formula:

Total Labor Costs = (Hourly Wage x Labor Hours) + Additional Labor Costs

Example: Using the numbers from our earlier examples:

  • Roofer A: ($20 x 24 hours) = $480
  • Roofer B: ($18 x 24 hours) = $432
  • Roofer C: ($15 x 24 hours) = $360
  • Additional Labor Costs: $5 x 24 hours = $120

Total Labor Costs = $480 + $432 + $360 + $120 = $1,392


Calculating labor costs for roofing contractors involves considering hourly wages, labor hours, and additional labor-related expenses such as taxes, insurance, and benefits. Accurate calculations are essential to provide competitive quotes, ensure profitability, and run a successful roofing business.


As a civil engineer and roofer, I love to share the experience that I have gained through the last couple of years. In the roofing industry, practical experience is a very crucial fact that can help you a lot. Hence, I want to help you with my blog.

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