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How to seal a Concrete Driveway

Seal a Concrete Driveway
In this article we will be taking a look at how to seal a concrete driveway. We'll cover the materials and tools needed, go through a step-by-step guide and..

Table of Contents

In this article we will be taking a look at how to seal a concrete driveway. We’ll cover the materials and tools needed, go through a step-by-step guide as well as provide our tips and tricks to help make the entire DIY process as easy as possible while not compromising on finish.

Materials and Tools

  • Concrete sealer
  • Concrete cleaner (Our Guide on Driveway Sealing Products)
  • Concrete crack filler compound
  • Stiff Bristle Broom or Brush
  • Roller/Brush & pan or sprayer
  • Paintbrush
  • Buckets
  • Water supply
  • Gloves (recommended)
  • Safety goggles (recommended)
  • Dust mask (recommended)
  • Pressure washer (recommended)

Driveway Cleaning

The first step in preparing a driveway for sealing is to remove any loose concrete, sticks, rocks, leaves and generally anything you dont wan’t covered by the sealant. This is a very important step as loose material under the sealing layer can cause early wear, an uneven finish or even a puncture and complete failure of the membrane.

Once the driveway is clear of loose debris we need to focus on removing anything stuck to the surface of the concrete. This will include things like engine oils, dust and other spills. You will need a stiff bristle broom, concrete cleaner and warm water as a minimum to properly clean the driveway. It is highly recommended to buy or borrow a pressure washer to aid you in this step as it will be able to dislodge the fine particles you might miss with just a brush or broom.

Wet the concrete then apply the concrete cleaner directly onto the driveway, or into the canister if using a pressure washer and start scrubbing or spraying! Make sure you hit every last inch of the driveway, your meticulous attention to detail here will pay dividends in the longevity of the sealer.

Once you have finished scrubbing, leave the cleaner to sit for another 10-15 minutes before rinsing it off with water.


Preparation of the Driveway

Now that we have a CLEAN and DRY driveway, it is time to start filling any cracks. Use the concrete patching compound to fill in any cracks or holes in the driveway. Apply the compound with the applicator tool that comes with the product and smooth it out to create an even surface.

Cracked Concrete - Patched With LRB & TAV

Allow the compound to dry before proceeding, this may take a few hours depending on the product. It is recommended to properly check the product specification as drying times differ and it needs to be completey dry before continuing.

Driveway Seal

Our Guide on Driveway Sealing Products

Once the driveway is dry, it is time to apply the sealer. Shake the sealer well before opening the container so there are no spills as once the sealer is on it is hard to remove. For sealing concrete driveways, we recommend an acrylic or sillicone solvent based sealer.

Depending on the type and viscosity of the sealer, it can be applied with either a roller/brush or sprayer, this will usually be described within manufacturer’s specification. In this example we are using a wide brush applicator.

For a brush application, start by pouring the sealer into the pan and begin ‘cutting in’ the edges of the driveway with a paint brush. It is important that the sealant is still wet when you come to blend in the cut with the roller the sealer bonds together to create a single membrance. So if you have a particularly large driveway you may want to try and ‘cut in’ a portion at a time.

Then you are going to pour a long strip, starting at the top of the driveway working your way down. Begin brushing across the width of the driveway ensuring an even spread and not too much overlap which will prevent the sealer from drying evenly.

Once the entire surface is sealed, use your paint brush to touch up any spots that have been missed by the roller and let it dry. Typically this will take 24-48 hours depending on the climate and sealer and may require multiple coats to properly seal.

5-minute readExpoxy Driveway? You might be making a big mistake!

How often should I re-seal my Concrete Driveway

The frequency of re-sealing your driveway will depend on a number of factors. Things like the type of sealer used, the amount of traffic the driveway receives, and the climate in your area can all have an affect. As a general rule of thumb, it is recommended to re-seal your driveway every 2-5 years.

One way to determine if it is time to re-seal your driveway is to perform a water test. Simply pour water on the surface of your driveway and observe how it behaves. If the water beads up on the surface, your sealer is still effective. If the water soaks into the surface, it may be time to re-seal.

Re-sealing your driveway on a regular basis can help to prevent these issues and extend the life of your concrete surface.

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