Liquid membrane calculator
Estimate liquid membrane from specified coverage and coats.
Your measurements
Enter your project values. Your estimate updates as you type.
View your estimateExample values are a starting point. Check product yields and specifications before ordering.
YOUR ESTIMATE
Membrane required
Calculated from your measurements.
How it's calculated
Coating = (area − excluded area) × coats ÷ coverage per coat × (1 + waste ÷ 100). Containers are rounded up.
Calculations use consistent units for your selected measurements. The waste allowance is applied once to the measured requirement. Whole purchase quantities are rounded up.
What this estimate includes
Use the required product application rate and number of coats. Coverage does not certify dry-film thickness or waterproofing compliance.
Quantity and arithmetic estimates only. Use project specifications for installation and design requirements.