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SEMCO — Liquid Membrane Calculator
How much Liquid Membrane do you need?
Select your surface type, enter the square footage, and get an estimated gallon amount plus the best 1-gal / 5-gal pail breakdown.
Step 1Surface
Step 2Area
Step 3Results
Step 1 of 2
What surface are you applying over?
Coverage is estimated per gallon for the required 2-coat application.
Open Pore Substrates
Best for more porous surfaces where coverage is lower.
25–50 sq ft / gallon
Closed Pore Substrates
Best for denser surfaces where coverage is higher.
35–65 sq ft / gallon
X-Bond Scratch Coat
Best when applying over SEMCO X-Bond Scratch Coat.
100–150 sq ft / gallon
Step 2 of 2
What is the total project area?
Enter the total square footage receiving SEMCO Liquid Membrane.
sq ft
15,000
Live estimate for 500 sq ft:
Gallons Needed
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Best Pail Mix
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1-gal + 5-gal
With 10% Overage
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Recommended buffer
Coats
2
minimum coats
Your complete Liquid Membrane estimate
Material estimate
Pail breakdown
Project summary
Area
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Surface
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Coverage
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