How to Seal a Concrete Driveway

mediumHome Repair4-6 hours8 steps

Safety Warnings

Read all chemical labels on the sealer for toxicity and flash points.
Ensure adequate ventilation if applying in a carport or garage area.
Wear protective eyewear and gloves to prevent chemical burns from sealers and cleaners.
Keep flammable materials away from the application area as some sealers are combustible.

Pressure Washer — 2000-3000 PSI

Push Broom — 18-inch stiff bristle

Paint Roller with Extension Pole — 3/8-inch nap

Stiff Scrub Brush — 6-inch wide

Concrete Sealer — Acrylic or Penetrating Sealer(As required by sq footage)

Concrete Degreaser — Industrial strength(1 gallon)

Concrete Patching Compound — Quick-set cement(1 small tub)

Clear the driveway of all vehicles and debris using a push broom.

Tip: Ensure the concrete is completely dry before moving to the cleaning phase.

Apply concrete degreaser to oil spots and scrub with a stiff brush.

Tip: Let the degreaser sit for 15-30 minutes before scrubbing for better penetration.

Pressure wash the entire driveway to remove deeply embedded dirt and loose particles.

Tip: Use a wide fan tip to avoid etching or carving lines into the concrete.

Allow the concrete to dry completely for at least 24 hours.

Tip: Moisture trapped in the concrete can cause the sealer to bubble or peel.

Inspect for cracks and fill them using the concrete patching compound.

Tip: Spatula the compound flush with the surface for a seamless finish.

Stir the sealer thoroughly but avoid shaking to prevent air bubbles.

Tip: Use a mixing stick to ensure the chemicals are properly blended.

Apply the sealer using a roller or sprayer, working in small sections.

Tip: Always apply in the direction of the driveway's slope to avoid lap marks.

Allow the sealer to cure for 24 to 48 hours before driving on the surface.

Tip: Check the manufacturer's label for specific 'tack-free' and 'full cure' times.

Apply sealer during a cool part of the day to prevent the product from drying too quickly.
Avoid sealing on a windy day to prevent airborne debris from sticking to the wet finish.
Ensure there is no rain forecasted for at least 24 hours after application.

Synthesized from 4 verified sources:

USDA Farmers' Bulletin (Gutenberg)View →

Gutenberg: Plain Concrete for Farm UseView →

Gutenberg: Electrical GuideView →

Gutenberg: Electricity for the 4-H ScientistView →