1. What is a Roofing Dumpster Size Calculator?

Definition: This calculator estimates the dumpster size needed for roofing projects based on roof area, shingle layers, weight, and dumpster capacity.

Purpose: It helps roofing contractors and homeowners determine the appropriate dumpster size for shingle removal projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( DS \) — Dumpster size (cubic yards)
• \( S \) — Roof area (square feet)
• \( T \) — Number of shingle layers
• \( W_{shingle} \) — Shingle weight per square foot (lbs)
• \( C \) — Dumpster capacity (pounds per cubic yard)

Explanation: The formula calculates the total weight of removed shingles and converts it to dumpster volume based on weight capacity.

3. Importance of Accurate Dumpster Sizing

Details: Proper dumpster sizing prevents project delays, avoids additional fees for overfilled dumpsters, and ensures efficient waste removal.

4. Using the Calculator

Tips: Enter the roof area in square feet, number of shingle layers (typically 1-3), shingle weight (default 2.75 lbs/ft²), and dumpster capacity (default 1000 lbs/yd³). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical weight of asphalt shingles?
A: Most asphalt shingles weigh between 2.5-3 lbs per square foot, with 2.75 lbs/ft² being a common average.

Q2: How do I determine the number of shingle layers?
A: Inspect the roof edge or remove a small section. Most roofs have 1-3 layers (new construction=1, reroofing=2-3).

Q3: What's a standard dumpster capacity?
A: Most roofing dumpsters have capacities between 800-1200 lbs per cubic yard, with 1000 lbs/yd³ being common.

Q4: Should I round up the dumpster size?
A: Yes, always round up to the nearest available dumpster size (10, 15, 20, 30, 40 cubic yards).

Q5: Does this include underlayment or other materials?
A: No, consider adding 10-15% to the calculated volume if removing underlayment, flashing, or other materials.