Ice and Water Shield Calculator

Accurately Calculate IWS Requirements in Seconds

Users love how easy it is to pinpoint precisely how much ice and water shield membrane they need. Stay on budget and meet code requirements without any hassle.

Try IWS Calculator for Free

Why Accurate Ice and Water Shield Calculations Matter

Faster and more accurate estimates

Optimized material usage

Enhanced job efficiency

Improved customer satisfaction

Time-consuming manual calculations

Potential for errors and over/underestimating

Increased risk of claims and callbacks

Customization

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Calculate IWS for entire roofs or individual sections.

Accuracy

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Ensures compliance with building codes and industry standards.

Efficiency

Saves time and reduces errors.

Proof of Work

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Generate detailed calculations for documentation and insurance claims.

Step 1

Input roof dimensions, pitch, and other relevant data.

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STEP 2

Click "Calculate" to generate precise IWS requirements.

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STEP 3

Select the desired output format (SF or rolls) and create report.

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STEP 4

You're all set, your IWS report is now ready for you!

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Your Top Questions Answered

Ice and Water Shield Calculator:

Q: What does the OneClick Code Ice and Water Shield Calculator do?
The OneClick Code Ice and Water Shield Calculator helps roofing professionals estimate how much membrane is needed for a project. Ice and water shield is installed over the roof decking and under the shingles, where it acts as a waterproof barrier to protect the deck from leaks and long-term damage. By entering your roof dimensions, the tool provides coverage totals in square footage (SF) or rolls, so you can order the right amount the first time and keep your project moving without delays.

Q: What information do I need to have to use OneClick Code’s Ice and Water Shield Calculator?
To use the calculator, you’ll need detailed roof and property information, including:

Roof size (in squares)
Predominant roof pitch
Valley length (in linear feet)
Eave length (in linear feet)
Soffit depth (in inches)
Inside exterior wall measurement (in inches)
Stud size (choose between 2x4 for residential or 2x6 for commercial)
Exterior type (brick, vinyl siding, wood siding, or stucco)

Finally, select your preferred output format—square footage (SF), half roll, or full roll—and the calculator will provide the total amount of ice and water shield needed for your project.

Q: How does OneClick Code’s Ice and Water Shield Calculator save time for roofers and estimators?
OneClick Code’s Ice and Water Shield Calculator eliminates manual calculations by providing instant results based on the roof’s dimensions. Just enter your project details, and the tool calculates the exact amount of ice and water shield needed, helping you save time, reduce waste, and minimize guesswork.

Q: How do I make sure my roofing projects include Ice and Water Shield coverage that meets local building code requirements?
Ice and Water Shield requirements vary by jurisdiction, depending on factors like roof pitch, climate, and local code adoption. Our calculator offers verified, jurisdiction-specific roofing codes tied to your exact project address. That means you can estimate with confidence and ensure full code compliance from the start.