What this sealer estimate measures
Sealer demand depends on the coverage rate for the actual surface and product. Porosity, finish and application conditions can change consumption; a maximum marketing value is not a universal working rate.
Single-coat coverage needs a coat multiplier. Complete-system coverage already represents the full specified application, so its multiplier is one. The result is liquid volume, then complete containers of the size you enter.
Enter confirmed coverage for your exact product, surface and application basis. A complete-system rate may already include multiple coats: choose that basis to avoid double-counting. The prefilled 250 sq ft per US gal and two coats are illustrative example inputs, not a product recommendation.
How to use this calculator
- Project area. Enter measured surface area for one product and surface condition in square feet.
- Coverage basis / Confirmed coverage per US gallon. Choose single-coat or complete-system coverage, then enter matching square feet per US gallon. A two-coat system table must use complete-system basis. Do not infer a working rate from an unmatched “up to” claim.
- Specified coat count. Only for single-coat coverage, enter the specified whole number of coats. This field is disabled for complete-system coverage because those coats are already included.
- Liquid per container. Enter the liquid content of one container in US gallons, such as 0.25 for one US quart. Confirm the exact package; no weight conversion is supplied.
- Waste / allowance. Optionally enter an additional allowance once. Use zero if the entered area or rate already includes the allowance you intend.
Select Calculate to update the result. Reset restores the example inputs and recalculates the example estimate.
Formulas, variables, and units
factor = coats for single-coat coverage; factor = 1 for complete-system coverage
- coats
- User-specified whole coat count, used only with a single-coat rate.
- factor
- Multiplier matching the declared coverage basis.
coverageAreaSqFt = areaSqFt × factor × (1 + wasteRate / 100); requiredGallons = coverageAreaSqFt / coverageSqFtPerGallon
- areaSqFt
- Measured surface area in square feet.
- wasteRate
- Explicit additional percentage.
- coverageAreaSqFt
- Area basis adjusted for coats only when needed, then for the allowance.
- coverageSqFtPerGallon
- Confirmed square-foot coverage per US gallon on the declared basis.
- requiredGallons
- Unrounded liquid demand in US gallons.
requiredContainers = requiredGallons / packageGallons; containers = ceil(requiredContainers); purchasedGallons = containers × packageGallons
- packageGallons
- US gallons of liquid in one container.
- requiredContainers, containers
- Fractional demand and complete packages, respectively.
- purchasedGallons
- Liquid volume represented by the purchased containers.
How to read your result
Coverage area is an arithmetic basis for the rate: it counts multiple coats only for a single-coat input, not extra physical floor area.
Required gallons are unrounded liquid demand. Whole containers use the unrounded package requirement; display precision does not reduce the purchase count.
Purchased gallons represent complete containers, without verifying product suitability, surface absorption, stain protection or waterproofing.
Displayed values use up to two decimal places. Complete purchase units are rounded upward from the unrounded requirement.
A worked purchase example
- Project area
- 275 sq ft
- Coverage basis
- Single-coat coverage — enter coat count
- Confirmed coverage per US gallon
- 250 sq ft / US gal
- Specified coat count
- 2 coats
- Liquid per container
- 1 US gal
- Waste / allowance
- 10 %
- Assume a hypothetical confirmed single-coat rate of 250 ft² per US gallon, two coats, 275 ft² and an elected 10% allowance.
- Coverage area basis is 275 × 2 × 1.10 = 605 ft²-coats.
- Required liquid is 605 / 250 = 2.42 US gallons.
- For 1 US gallon containers, 2.42 / 1 = 2.42 containers, rounded upward to 3, representing 3 US gallons.
- If a confirmed complete two-coat rate were instead 125 ft² per gallon, select complete-system basis: 275 × 1.10 / 125 also gives 2.42 gallons, without another coat multiplier.
Hypothetical rates, independently calculated; neither 250 nor 125 is supplied as a product preset. The recorded Aqua Mix table already includes two coats and must not be used as a single-coat input.
Frequently asked questions
What if the product table already includes two coats?
Select complete-system coverage and enter that rate. The calculator uses a factor of one and disables the separate coat field.
Can I use the highest coverage printed on the label?
Only if confirmed for the exact surface and conditions. Porosity and finish affect coverage; the prefilled rate is illustrative, not an optimistic product default or suitability judgment.
Can I enter a quart container?
Enter 0.25 US gallons for one US liquid quart. Match the coverage unit to US gallons; do not substitute a weight or an imperial gallon.
Does sealer replace waterproofing?
This quantity estimate does not establish waterproofing. Sealer purpose, compatibility, surface testing and installation requirements must be confirmed separately.
Scope and limitations
Project types
- Compatible indoor tile or stone surface with confirmed coverage
Check the calculator assumptions and product conditions for your project.
Calculation limits
- Enter confirmed coverage for your exact product, surface and application basis. A complete-system rate may already include multiple coats: choose that basis to avoid double-counting. The prefilled 250 sq ft per US gal and two coats are illustrative example inputs, not a product recommendation.
- No stain-protection, waterproofing, substrate compatibility or coverage guarantee is made.