Asphalt Sealer Calculator

sq ft / gal
Optionally enter the price per gallon of sealer:

Baluster Estimate:

Sealer Needed:

Coverage Area: sq ft

Gallons Required: gal

Estimated Price:

sq ft / gal
Optionally enter the price per gallon of sealer:

Result:

Sealer Needed:

Coverage Area:: sqft

Gallons Required:gal

Estimated Price:

How to Calculate How Much Asphalt Sealer You Need

Adding a fresh coat of sealer every few years is the best way to maintain your asphalt driveway’s appearance and protect the surface from water penetration, oxidation, and cracks. Calculating how much sealer you need is essential to ensure you have the right amount for your application.

You can calculate the amount of sealer required for an asphalt driveway in a few easy steps.

Step One: Determine the Coverage Rate

The coverage rate of an asphalt sealer is a critical factor in determining how much product you need. This rate indicates the area that can be covered by a certain amount of sealer under specific conditions. Manufacturers typically provide this information on the product label, and it is expressed in square feet per gallon (sq ft/gal).

The coverage rate can vary depending on several factors:

  • Type of sealer: Different formulas (e.g., acrylic, coal tar, asphalt emulsion) have different consistencies and spreading capabilities.
  • Application method: Sprayer, squeegee, or brush applications can affect how thinly or thickly the sealer is applied.
  • Surface condition: Rough, porous surfaces require more sealer than smooth surfaces, so if your driveway is in poor condition, it will likely require more sealer to cover.
  • Number of coats: Applying multiple coats will obviously require more product.

In our experience, most products cover around 100 square feet per gallon, but some products cover more or less. We’ve also found that when applying multiple coats, the second coat uses far less sealer than the first since the first coat absorbs more sealer.

Step Two: Calculate Sealer Needed

Once you know the coverage rate, you can calculate the amount of sealer needed for your driveway. Here’s the formula:

sealer needed (gallons)= driveway area (sq ft)
coverage rate (sq ft ⁄ gallon)

The amount of sealer required in gallons is equal to the area to be sealed in square feet divided by the product’s coverage rate in square feet per gallon.

Keep in mind that sealer is usually sold in five-gallon buckets, so if you’re project needs 7 gallons, you’ll likely need to purchase two five-gallon buckets of sealer (10 gallons total) for the job.