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Product costs, availability and item numbers may vary online or by market.

Why Should I Use a Waterproofer?

Waterproofers provide a barrier between your concrete or wood surface and the elements. It can protect your surfaces from the damaging effects of the sun, inclement weather and household chemicals. A good waterproof barrier can also prevent scuffs and resists peeling.

Waterproofers can be used on concrete surfaces such as pavers, patios, walkways, pool decks and living spaces. They're also a good idea for basement waterproofing. And don't forget wood surfaces. Decks, fences and outdoor furniture should also be waterproofed.

For more information about the features and benefits of waterproofers, read our Waterproofers and Sealers Buying Guide.

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How to Waterproof Concrete

A gray concrete driveway with water droplets on one side and bare concrete on the other.

Follow these instructions to waterproof concrete surfaces. This includes driveways, basements, pool decks, patios, garage floors and walkways.

Instructions

A person using a black and yellow broom to scrub cleaner on a concrete floor.

In order for the waterproofer to properly adhere to the surface, it's important to thoroughly clean the concrete. First, wipe up any grease spills and excess oil. Next, sweep up any dirt and debris.

Use a cleaner that can clean, degrease and etch the concrete. Etching is necessary because it makes the concrete surface more porous, so that the waterproofer can sink in, resulting in a long-lasting painted surface.

Now it's time to apply the cleaner. First, test it in an inconspicuous area prior to cleaning the entire floor. Then, follow the instructions for the cleaner you purchased. Typically, the cleaner is poured onto the surface and sits for 20-30 minutes. Then work the cleaner into the surface with a stiff broom. Rinse thoroughly with water and then wipe the concrete down, removing excess moisture from the surface. If the surface is especially dirty, repeat the process.

Let the concrete dry for at least 24 hours before waterproofing.

Good to Know

When using a cleaner, the temperature shouldn't be colder than 50 degrees or warmer than 90 degrees Fahrenheit.

Caution

Is your concrete new? Freshly poured concrete needs to cure for at least 30 days before you can clean and waterproof.

A person using a paint roller to apply primer to a concrete floor.

In order for the waterproof topcoat to properly adhere, a bonding primer is recommended for a smooth, long-lasting finish. A good primer penetrates the concrete and prevents flaking and peeling.

If your concrete is rough and porous, use a 1/2-inch roller. For smooth surfaces, select a 1/4-inch to 3/8-inch roller.

Add the primer to a paint tray. Saturate the roller with the primer and roll across the surface. If your primer is thin, ensure that it doesn't puddle. One coat is usually sufficient, but if your surface is extra porous (ex. a driveway) then apply two coats. Some primers do require two coats, so read the directions carefully for the product you've purchased.

Follow the directions with your primer for dry times. It's usually between 1-2 hours.

Good to Know

If you're priming and waterproofing floors, use an extension pole with your roller to prevent back and knee pain.

A person using a putty knife to spread concrete repair into a crack.

If you have holes or cracks in the concrete, they'll need to be patched before applying the waterproofer. Instructions can vary depending on the concrete or mortar product that's selected, so follow them carefully.

Typically, the repair formula is pushed into the hole or crack. Smooth it out with a putty knife. If the area is larger than 1/4-inch, it may require 2-3 applications. Allow the area to fully cure before applying the waterproofer.

How to Waterproof Wood Surfaces

A light wood deck with water droplets on it.

Follow these instructions to waterproof wood surfaces, including decks, fences, outdoor furniture and more.

Instructions

A man using a stiff broom and wood cleaner to clean a deck.

Wood surfaces need to be thoroughly cleaned to remove dirt, peeling paint, mold, mildew and stains. By cleaning the wood surface, it'll provide an even finish that'll last longer.

First, sweep the surface. If your wood surface is rough, it should be sanded smooth. Then you'll need a wood cleaner to remove dirt and debris. Mix the solution according to the label. Use a stiff broom or a 1/2-inch nap roller to spread the cleaner evenly. Work in the same direction, using long strokes. For vertical surfaces, such as fences and deck posts, scrub the surface from the bottom to the top to avoid streaking.

Rinse off with a hose or pressure washer. Repeat the cleaning step if needed. Drying times will vary, so read the product's instructions carefully.

Good to Know

Watch the weather. It needs to be dry for at least 48 hours prior to cleaning. Also, avoid cleaning on a very hot or humid day.

Need to Know

Always use cleaning gloves and eye protection when using a waterproofer.

A person using a roller on an extension pole to add waterproofer to a deck.

In order for the waterproofer to work effectively, you'll need to apply two or three coats for long-lasting effects.

Use a paint sprayer or a roller to apply the first coat of waterproofer. Follow the product label for the drying time between coats. After the first coat is dry, use fine sandpaper on your wooden surface so the second coat of waterproofer will adhere. Then sweep and wipe down the surface, so that dust and debris doesn't stick to your second coat. Apply more coats as needed and follow the manufacturer's drying times.

Waterproofer has to cure before you place anything on top of it. It's recommended that you let it dry for 3-4 days.

How to Waterproof Basements, Concrete, Decks and Wood

Tools and Materials

Tools

Materials

Why Should I Use a Waterproofer?

How to Waterproof Concrete

Instructions

How to Waterproof Wood Surfaces

Instructions

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