1. What Is an Asphalt Roof Cost Calculator?

Definition: This calculator estimates the total cost for a new asphalt shingle roof based on roof size, material price per square, and labor costs.

Purpose: It helps homeowners and contractors budget for roof replacement projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Total cost ($)
• \( Q \) — Roof size in squares (1 square = 100 sq ft)
• \( P_{square} \) — Price per square of materials ($)
• \( C_{labor} \) — Labor costs ($)

Explanation: The roof size is multiplied by material cost per square, then labor costs are added to get the total project cost.

3. Importance of Roof Cost Estimation

Details: Accurate cost estimation helps with budgeting, financing, and comparing contractor quotes for roofing projects.

4. Using the Calculator

Tips: Enter the roof size in squares (divide total sq ft by 100), material price per square (default $150), and labor costs (default $1000). All values must be ≥ 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a "square" in roofing terms?
A: 1 square = 100 square feet of roof area. It's the standard measurement unit for roofing materials.

Q2: What's a typical price per square for asphalt shingles?
A: Prices range from $100-$400 per square depending on shingle quality and region, with $150 being average.

Q3: How do I estimate my roof size in squares?
A: Measure your home's footprint (length × width), multiply by roof pitch factor (1.1-1.5), then divide by 100.

Q4: What affects labor costs?
A: Roof complexity, location, season, and local labor rates. Labor typically accounts for 40-60% of total cost.

Q5: Does this include removal of old roofing?
A: No, tear-off costs are additional. Add 10-20% to labor costs if removing existing roofing.