1. What is Asphalt Shingle Roof Price per Square Foot?

Definition: This calculator determines the cost of an asphalt shingle roof installation per square foot based on material quantity, price, labor costs, and roof area.

Purpose: It helps homeowners and contractors estimate roofing costs accurately for budgeting and comparison purposes.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C_{sf} \) — Cost per square foot ($/ft²)
• \( Q \) — Shingle quantity in squares (1 square = 100 ft²)
• \( P_{square} \) — Price per square of shingles ($)
• \( C_{labor} \) — Total labor cost ($)
• \( A_r \) — Total roof area (ft²)

Explanation: The total material cost (quantity × price) plus labor cost is divided by the roof area to get the cost per square foot.

3. Importance of Roof Cost Calculation

Details: Accurate cost estimation helps in budgeting, comparing contractor quotes, and understanding the value of different roofing materials.

4. Using the Calculator

Tips: Enter the shingle quantity in squares, price per square, total labor cost, and total roof area in square feet. All values must be > 0 except labor which can be 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a "square" in roofing terms?
A: In roofing, 1 square equals 100 square feet of roof area. Shingles are typically sold by the square.

Q2: How do I find my roof area?
A: Measure length × width of each roof plane and sum them up, or use our Roof Area Calculator tool.

Q3: What affects labor costs the most?
A: Roof pitch, complexity, location, and removal of old roofing material significantly impact labor costs.

Q4: What's a typical price range per square?
A: Asphalt shingles typically cost $90-$150 per square, but premium options can cost more.

Q5: Does this include underlayment and other materials?
A: No, this calculates shingle costs only. Consider adding 15-20% for underlayment, flashing, and other materials.