What is the best applicator for Thompson's Water Seal?

Author: Miss Maryjane Kunde  |  Last update: Tuesday, August 5, 2025

A garden sprayer makes the job easier, but if you don't have access to one, a piece of cloth or even a small brush could work just fine. Things you'll need: Thompson's water seal. A garden sprayer to apply the sealer, a small brush, or a piece of cloth.

Can you use a sprayer to apply Thompson's water seal?

What is the best way to apply Thompson's® WaterSeal® cleaners? The fastest way to apply is with a pump-up sprayer (using a coarse setting), but you can also apply with a brush or a roller. You should apply liberally.

Can you apply Thompson's water seal with a brush?

You can use a pressure washer or a garden hose to clean the surface. If the surface is dirty or has mildew, you can use a Thompson Water Seal cleaner to clean it. Apply the water seal. You can apply Thompson Water Seal with a brush, roller, or sprayer.

What is the easiest way to apply deck sealer?

Using a brush, pump sprayer or paint roller, apply a thin layer of sealant to the exterior wood surface, working the deck sealer thoroughly into the wood as you go. Keep an eye on any pools of water or cream forming, and smooth them out before they dry.

Should I use a brush or roller to seal my deck?

Using a high-quality brush will help you to apply the stain evenly and to reach all areas of the deck, including corners and hard-to-reach spots. It will also help you to avoid pesky drips and streaks, which can ruin all your hard work.

How To Seal A Deck With Thompson's Water Seal

What is the best way to apply sealer?

The most important rule to remember is that less is more. It's best to apply two thin coats, making sure the sealer doesn't puddle or form uneven, thick areas. When applying a second coat of sealer, apply it in the opposite direction (or perpendicular) to the first coat to ensure even coverage.

What kind of roller to apply Thompson water seal?

Although it is recommended to use a pump-up sprayer, you can also apply this sealant with a roller, a brush, or a paint pad. Keep in mind that you'll need a rolling tray, a medium nap paint roller, and even an extension pole.

How many coats of Thompson water seal are needed?

Only one coat of Thompson's® WaterSeal® Wood Sealer is necessary. A second coat can be added if more color is desired. Allow the first coat to dry approximately 2 hours. Second coat must be applied within 4 hours of initial application.

Does Thompsons water Seal need to be shaken?

Shake, stir or mix thoroughly before and occasionally during use. A small trial patch should be tried before application over the entire surface. Only one light coat is necessary in most applications. Apply by brush, roller, dipping, or sprayer.

Can you use too much Thompson Water Seal?

Yes: Applying too much Thompson's WaterSeal clear waterproofer will significantly increase the time it takes to dry, and it may not dry properly.

Can you apply deck sealer with a pump sprayer?

Yes, you can spray wood sealer using a sprayer. Spraying is a faster application method suitable for larger areas like decks. It provides even coverage but carries a higher risk of overspray, necessitating careful attention and preparation to avoid wastage or accidental staining of surrounding structures.

How often should I reseal my deck?

Repeat Annually. It is generally recommended to seal your deck every year or two. Harsh winters or extremely hot summers can cause the sealant to wear away.

How many years does Thompson's water seal last?

Water Seal can only be used on bare and uncoated brick, stone or concrete. How long will Water Seal last? If applied correctly, Water Seal will last up to 4 years. This is dependent on conditions such as orientation of the wall and local climate.

What happens if it rains after applying Thompson's water seal?

Thompson's Water Seal has been reformulated to last longer than standard waterproofers. It is long lasting, even under heavy moisture conditions, and is not destroyed by ultraviolet light.

What can I use instead of Thompson's water Seal?

12 Most Effective Wood Sealers According To Experts
  • Thompson's Water Seal. ...
  • Rainguard Premium Wood Sealer. ...
  • DEFY Crystal Clear Sealer. ...
  • Anchorseal 2. ...
  • Roxil Wood Protection Cream. ...
  • Eco-Advance Exterior Wood Waterproofer. ...
  • Ready Seal Stain and Sealer for Wood. ...
  • Pure Tung Oil Natural Wood Sealer.

What is the best deck sealer?

However, we've taken the time to sift through the options and help you find the best deck stain in 2024.
  • Cabot Australian Timber Oil - Best Overall Deck Stain.
  • Ready Seal Natural Cedar - Best Budget Deck Stain.
  • Thompsons WaterSeal Advanced - Best Water-Based Deck Stain.

How to clean up after using Thompson's water seal?

All equipment should be cleaned immediately after use with detergent and warm water. MAINTENANCE To maintain water repellency periodic retreatment will be required. The frequency of retreatment will vary with the type, nature and exposure of treated surfaces, as well as prevailing weather conditions.

Is Thompson Water Seal worth it?

Overall I do not recommend Thompson's Water Seal to my customers. There are many water-based products available that last longer and provide much better protection. I know it is somewhat subjective but I also think the colors for this product look strange.

What is the best roller for a sealer?

Generally, a 3/8” – 3/4” nap roller will do the job. The decision on which nap to use will depend on the surface texture on which you are applying the product. For example, on a smooth paver surface, a 3/8” roller will probably smooth out any puddles perfectly.

What is considered a medium nap roller?

Medium Nap (on average 11mm)

A medium nap is the most common roller thickness. They are designed to hold good amount of paint. The medium nap will apply an even finish to walls and ceilings around your home without splattering excess paint all over the floor.

What is the best tool to apply sealer?

Roller: A paint-type roller with a 1/4- to 3/8-inch nap can be used to apply both water- and solvent-based sealers.

Is it better to spray or roll on sealer?

The answer depends on the surface's square footage. For large surfaces such as commercial floors, a sprayer is faster and way more efficient. Finally, for small surfaces, such as garages or any other exterior surface, a paint roller or any other type of roller will do the trick. Rolling is a less expensive process.

What's the best way to apply wood sealer?

Here are a few tips for applying wood sealer:
  1. Start by sanding the wood to smooth any rough edges. ...
  2. Next, clean the wood with a damp cloth to remove any dust or dirt.
  3. Once the wood is dry, apply a thin layer of sealer with a brush or roller. ...
  4. Allow the sealer to dry completely before using or handling the wood.

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