Roofing Waste Calculator | Shingle Calculator

Accurately estimate shingle needs and minimize material waste

Users find this tool super helpful for accurately calculating shingle waste. Create spot-on estimates and reduce material waste, saving time and money on projects.

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Why Accurate Shingle Waste Calculations Matter

Precise calculations prevent overspending on materials

Ensure materials are available on schedule and minimize project delays

Reduce the environmental impact of construction projects

Overestimating shingle needs leads to excess inventory

Underestimating shingle requirements can cause significant project delays

Excess shingles increase disposal costs

Reduced material costs

Material costs

Minimize over-ordering and ensure cost savings.

Improved accuracy

Accuracy

Guarantee more precise and reliable estimates.

Increased profitability

Profitability

Reducing material expenses and associated disposal costs.

Project efficiency

Efficiency-1

Generate detailed calculations for documentation and insurance claims.

Step 1

Provide all the required inputs and click "Calculate".

Step 1-1

STEP 2

Click "Copy Note" to copy detailed breakdown of calculations.

Step 2-2

STEP 3

Choose the rounding method that best fits your estimate.

Step 3-2

STEP 4

Now you have your Report PDF, which you can print or share!

Step 4-2

Your Top Questions Answered

SINGLE WASTE CALCULATOR:

Q: What does OneClick Code’s Shingle Waste Calculator do?
The Shingle Waste Calculator helps roofing professionals estimate how much extra material is needed to account for waste during a shingle installation. By entering your roof dimensions, the tool calculates your total shingle waste percentage, so you can get the right amount of material for your roofing job the first time, avoiding overbuying, under-buying, and costly delays.

Q: What information do I need to use the Shingle Waste Calculator?
To use the calculator, you’ll need your roof size (SQ), plus measurements for your hip length, rake length, eave length (all in linear feet), and the number of bundles per square. You can also enter optional details to improve accuracy, including:

Ridge length (LF)
Open valley length (LF)
Closed valley length (LF)
Roof-to-wall length (LF)
Step flashing length (LF)

These inputs allow the calculator to account for roof complexity, cut patterns, and layout—delivering a more precise waste percentage tailored to your specific project.

Q: Why is it important to calculate shingle waste on a roofing job?
Not accounting for waste can lead to costly delays or over-purchasing materials. OneClick Code’s Shingle Waste Calculator gives you a tailored waste estimate based on your roof measurements, helping you order the right amount of material and plan your project more efficiently.

Q: Does the waste percentage change based on roof details?
Yes. OneClick Code’s Shingle Waste Calculator uses your roof measurements, like hip length, rake length, eave length, and more, to calculate a tailored shingle waste percentage. This gives you a more accurate estimate than using a fixed industry default.

Q: What tool can I use to calculate how much shingle waste to include in my material order, especially for insurance claims or roof restoration jobs?
OneClick Code’s Shingle Waste Calculator is the best way to calculate exactly how many shingles you need to order for a roof repair or restoration project. Built for roofing professionals working on insurance claims, it uses real roof measurements to generate a project-specific waste percentage, so you can avoid overbuying, prevent under-ordering, and get the right amount of material the first time.