Sealcoating calculator
Sealer concentrate, water and sand for a driveway or parking lot, from the area and the number of coats.
1,000 sq yd, 240 gal mixed. Starting rates, not a spec: the sealer's own data sheet gives its coverage, water and sand, and those win.
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How much sealcoat do I need? Turn the area into square yards (square feet divided by 9), then multiply by the number of coats and the rate per coat. A common applied rate is about 0.12 gallons of mixed sealer per square yard per coat. A 9,000 square foot lot is 1,000 square yards, so two coats is about 240 gallons mixed, or 200 gallons of concentrate with 20 percent water.
Common questions
Turn the area into square yards (square feet divided by 9), then multiply by the number of coats and the rate per coat. A common applied rate is about 0.12 gallons of mixed sealer per square yard per coat. A 9,000 square foot lot is 1,000 square yards, so two coats is about 240 gallons mixed, or 200 gallons of concentrate with 20 percent water.
It depends on the product. Most asphalt emulsion and coal tar sealers call for somewhere around 15 to 30 percent water by volume of concentrate, and the spec sheet gives the exact number. Too much water thins the film and shortens how long the job lasts.
About 2 to 2.5 pounds of sand per gallon of concentrate is a typical load, with more on rough or porous pavement if the product allows it. For 200 gallons of concentrate that is 400 to 500 pounds, or 8 to 10 fifty-pound bags.
Two coats is the usual spec for parking lots and driveways that see real traffic, because two thin coats wear better than one heavy one. Some contractors add an extra pass in drive lanes and entrances, where the wear is worst.
Yes. Sealer is a thin film and does not bridge cracks, so water keeps getting into the base through any crack left open. Clean and fill the cracks first, and let the filler set before the sealer goes on.
TrackOver keeps the estimate, the materials, the crew schedule and the job photos in one place, from the first quote to the final invoice.