1. What is the Cost to Replace Asphalt Roof Calculator?

Definition: This calculator estimates the total cost to replace an asphalt shingle roof based on roof size, material cost per square, and labor costs.

Purpose: It helps homeowners and contractors budget for roof replacement projects by providing accurate cost estimates.

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 cost ($)

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

3. Importance of Roof Replacement Cost Calculation

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

4. Using the Calculator

Tips: Enter the roof size in squares (divide total sq ft by 100), material price per square (default $120), and labor cost (default $1500). 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 in roofing.

Q2: What's a typical price per square for asphalt shingles?
A: Prices range from $100-$150 per square for standard 3-tab shingles, more for architectural shingles.

Q3: How do I estimate my roof size in squares?
A: Measure your home's footprint (length × width), multiply by roof pitch factor (1.3 for medium pitch), then divide by 100.

Q4: Does this include tear-off and disposal costs?
A: Typically yes, as these are usually included in the labor cost. Verify with your contractor.

Q5: Should I add extra for waste?
A: Most estimates include 10-15% waste factor in the material calculation. Check if your price per square already includes this.