BuildToolsHub US Construction Calculators

Asphalt & Paving

Sealcoat Coverage Calculator

Estimate sealcoat gallons for asphalt surfaces.

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Educational US estimate only. Not engineering, structural, code, or professional construction advice. Mix designs, codes, and local conditions vary — verify with licensed professionals and your building department.

Estimator methodology

BuildToolsHub takeoffs separate net measured quantities from ordered quantities. Ordered qty = net × condition-based waste, then rounded for plant or package sizes (e.g. ready-mix to the nearest 0.5 yd³).

  • Concrete bags: Quikrete / SAKRETE published yields (80 lb ≈ 0.60 ft³). Ready-mix contingencies follow ASTM C94 purchaser practice.
  • Rebar: CRSI published lb/ft tables; optional lap allowance ≈ 40× bar diameter (confirm with drawings).
  • Roofing: NRCA squares (100 ft²); pitch factor √(1+(rise/12)²); ~3 bundles/square for standard shingles.
  • Aggregates / fill: ASTM C29-style densities; swell/compaction allowances for haul and place volumes.
  • Masonry: BIA / NCMA common unit factors (e.g. ~1.125 CMU/ft² for 8×16 face).

Use the Order tab for a supplier call sheet and the Assumptions panel for the exact factors applied to this run.

Why use Sealcoat Coverage Calculator

Calculate sealcoat gallons for driveways and lots using area and product coverage.

Oil spots and heavily oxidized pavement can increase sealer use.

How to use

  1. Enter job dimensions. Pick a pour/layout condition to set industry waste %, or choose Custom.
  2. Review Net vs Order on the Summary tab — order the rounded quantity, not net alone.
  3. Open the Order tab for a supplier checklist, then print, export CSV, or share the link.

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About Sealcoat Coverage Calculator

How much does sealcoat cover?

Often roughly 80–100 sq ft per gallon depending on product and surface.

One or two coats?

Many jobs use two thin coats—double the take if so.

When to seal?

On clean, dry asphalt in suitable temperatures—follow product data.

Is this professional engineering advice?

No. Educational estimates only. Verify with a licensed professional and local codes.

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