Masonry Sealer Calculator
Estimate masonry sealer volume and full containers for brick, block or stone surfaces after opening deductions, coats, coverage and porous-surface allowance.
Default project preview
2 containers
Net masonry area
550 ft²
Gross wall area
640 ft²
Net sealer volume
6.11 gal
Purchased volume
10 gal
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Total wall length
Enter this project assumption in ft. The current imperial default is 80 ft.
Average wall height
Enter this project assumption in ft. The current imperial default is 8 ft.
Doors and openings
Enter this project assumption in ft². The current imperial default is 90 ft². Minimum: 0.
Sealer coats
Enter this project assumption in a unitless value. The current imperial default is 2. Minimum: 1.
Coverage per coat
Enter this project assumption in ft²/gal. The current imperial default is 180 ft²/gal.
Porosity and waste allowance
Enter this project assumption in %. The current imperial default is 15 %. Minimum: 0. Maximum: 50.
Container volume
Enter this project assumption in gal. The current imperial default is 5 gal.
Price per container
Enter this project assumption in a unitless value. The current imperial default is 165. Minimum: 0.
How to read the outputs
Net masonry area
after openings. Default preview: 550 ft².
Gross wall area
before deductions. Default preview: 640 ft².
Net sealer volume
before allowance. Default preview: 6.11 gal.
Purchased volume
full containers. Default preview: 10 gal.
Porosity allowance
entered allowance. Default preview: 15%.
Material cost
sealer only. Default preview: $330.00.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Net wall area = wall length × height − openings. Sealer volume = net area × coats ÷ coverage, plus allowance.
FAQ
Masonry Sealer Calculator questions
Why can masonry use more sealer than the label estimate?+
Open pores, textured joints and absorbent units can reduce actual coverage.
Should all masonry walls be sealed?+
Not automatically. The wall assembly must still manage moisture and vapor appropriately.
Are opening deductions always worthwhile?+
Large openings should be deducted; small interruptions may be offset by masking and application waste.