0032053241055

Thompson's WaterSeal

Model 24105

Internet #100548129

Store SKU #430291

5 gal. Clear Multi-Surface Waterproofer

$51.66 /each

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Product Overview

The Thompson's WaterSeal 5 gal. Clear Multi-Surface Waterproofer effectively seals wood, brick and concrete surfaces, like decks and patios, from water damage. This waterproofer features a low VOC formula for safety and finishes clear to allow surfaces to maintain their natural color. Apply this sealer on by brush, roller or sprayer for convenience and allow to dry for 24 hours before recoating or touching.

California residents: see   Proposition 65 information

  • Low-VOC formula ideal for use on wood, concrete and brick
  • 5 gal. container waterproofs up to 1,000 sq. ft.
  • Clear finish maintains the surface's original color and allows wood to gray naturally
  • Dries to the touch in 24 hours to provide quick protection
  • Requires only 1-coat for efficient waterproof defense
  • May be applied with a brush, roller, dipper or sprayer
  • Online price includes PaintCare fee in the following states: CA, CO, CT, MN, OR, RI, VT
  • Click here to learn more about waterproofing

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Customer Questions & Answers

26 Questions59 Answers

Customer Questions & Answers

5 gal. Clear Multi-Surface Waterproofer
5 gal. Clear Multi-Surface Waterproofer

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6 answers

What do I clean my sprayer with?

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Asked by
Dalton Ga
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September 14, 2015
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July 14, 2016
Answer: 
1 cup Mineral spirits first run through and then 1/4 cup dish detergent and 1 qt. water second run through until clear.
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Asked by
Savannah, GA, USA
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February 2, 2016
Answer: 
Thompson's Waterseal cleans up easily with mineral spirits followed by soap and water. If you do this the tools you use can be dependably used again.
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Asked by
Tampa, FL, USA
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December 1, 2015
Answer: 
I cleaned mine with a garage grade detergent and water.
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Asked by
North Carolina
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November 2, 2015
Answer: 
You can clean your sprayer using something similar to mineral spirits.
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Asked by
Cleveland, Ohio
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October 4, 2015
Answer: 
I would run about 10oz. of paint thinner thru it , then some warm soapy water, then some warm clear water.
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Asked by
Great Falls, MT, USA
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September 15, 2015
Answer: 
Hello Smitty, Clean equipment with mineral spirits following your sprayers manufacturer’s
safety recommendations, then rinse with soap and hot clean water. Hope this helped.
User submitted photo
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4 answers

Clear multi surface seal, is it suppose to come out white like milk

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Asked by
Yucca Valley California
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June 5, 2016
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Asked by
Suwanee, GA
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July 14, 2016
Answer: 
Yes, it will then dry clear after curing. It needs to be applied evenly with no puddles. All puddles need to be spread out.
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Asked by
Great Falls, MT
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July 13, 2016
Answer: 
Hello WildCat. Fair enough question. Yes. Product will appear milky white during application, but will dry clear. I hope this answered your question.
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Asked by
Arkansas
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June 18, 2016
Answer: 
It is milky when wet, but clears as it dries.
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Asked by
Savannah, GA, USA
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June 13, 2016
Answer: 
Dear Wildcat,
Yes, it does look like this until you get it applied. It is a bit disconcerting but when you first pour this stuff out it looks like you ought to add it to tomato soup. It is my understanding that Thomson's changed their formula a couple of years ago to give better penetration and protection. I have close to 1000 square feet of porch and decking to protect and wouldn't rely on anything
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Dear Wildcat,
Yes, it does look like this until you get it applied. It is a bit disconcerting but when you first pour this stuff out it looks like you ought to add it to tomato soup. It is my understanding that Thomson's changed their formula a couple of years ago to give better penetration and protection. I have close to 1000 square feet of porch and decking to protect and wouldn't rely on anything else
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4 answers

Hello how often should I reseal the wood with this product

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April 30, 2016
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Asked by
Arkansas
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July 10, 2016
Answer: 
I reseal whenever water stops beading. My wood fence generally lasts about a year, but my deck needs resealing ever 6 to 9 months.
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Asked by
Great Falls, MT
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May 2, 2016
Answer: 
Hello Oh, Longevity can influenced by many factors, weather being the big one. To determine if a reseal is needed perform the splash test. Sprinkle water on various sections of surface to be sealed. If water absorbs and darkens color of substrate within five seconds, surface is porous and considered ready to be treated. If water beads up or otherwise sits on top of surface, then surface does not need Read More
Hello Oh, Longevity can influenced by many factors, weather being the big one. To determine if a reseal is needed perform the splash test. Sprinkle water on various sections of surface to be sealed. If water absorbs and darkens color of substrate within five seconds, surface is porous and considered ready to be treated. If water beads up or otherwise sits on top of surface, then surface does not need protection at this time. I hope this Helped. Read Less
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Asked by
North Carolina
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May 2, 2016
Answer: 
For outdoor items you've sealed, I would look at resealing about every 2-years.
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Asked by
Avon Park, FL
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May 1, 2016
Answer: 
Dear oh, Thompson's Water Seal is a wax-based product. Bear that in mind. It is not a permanent or long term coating such as paint or stain. You will likely need to re-apply every two years. Also note that this coating is not in solution...technically it is a dispersion which will settle in the can over time. Most likely you will need to stir the product i.e. with a stick of wood - something that will Read More
Dear oh, Thompson's Water Seal is a wax-based product. Bear that in mind. It is not a permanent or long term coating such as paint or stain. You will likely need to re-apply every two years. Also note that this coating is not in solution...technically it is a dispersion which will settle in the can over time. Most likely you will need to stir the product i.e. with a stick of wood - something that will reach down to the bottom of the can. You will need to stir it a lot to get the wax back into dispersion in order to get it to a state where it will give you a uniform coating.
The waterproofing comes from the water repellent characteristics of the wax. Out of the can (after thorough stirring) it will soak into the wood providing a surface where water will bead up. Gradually, the wax will continue to penetrate deeper into the wood while some of it will evaporate especially with direct sunlight. Hence the need to re-apply periodically.
In my case, nearly ALL of the wax was in the bottom two inches of the can. Since the 5 gallon can is 'closed head' it is much more difficult to stir it to make the coating uniform for application. Plan to spend some time stirring. Read Less
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4 answers

Cement is sticky and doesn't seem to be drying

This question is from 5 gal. Clear Multi-Surface Waterproofer
Asked by
Cleveland, OH
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August 25, 2015
I think that I've applied the multi-surface waterproofer to thick. The drive is sticky after two days of application. How can I resolve this? Should I use driveway cleaner and powerwash it again?
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Asked by
Savannah, GA, USA
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February 2, 2016
Answer: 
Dear Dale,
Instructions for use indicate that a light coating for Thompson's Waterseal is all one needs to do the job. However, it also indicates that concrete, brick and masonry surfaces must be thoroughly cleaned prior to application with a concrete cleaner according to the directions and cautions on the cleaner. Concrete that has a smooth, flat finish must be opened for proper penetration by Thomson's
Read More
Dear Dale,
Instructions for use indicate that a light coating for Thompson's Waterseal is all one needs to do the job. However, it also indicates that concrete, brick and masonry surfaces must be thoroughly cleaned prior to application with a concrete cleaner according to the directions and cautions on the cleaner. Concrete that has a smooth, flat finish must be opened for proper penetration by Thomson's Waterseal. This should be done using a concrete etch product following concrete etching use instructions carefully ensuring thorough rinsing and removal of the etching solution. Then allow the concrete to dry a minimum of 72 hours after etching before applying the Waterseal. I'm sorry you had the problem. I know things like this can be frustrating. I hope this helps.
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Asked by
North Carolina
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November 2, 2015
Answer: 
Your results are directly related to applying it too thick.
You could try to use cleaner and powerwash it again however, I think you may have better results using something like muriatic acid then powerwashing it.
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Asked by
Baltimore, MD, USA
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September 1, 2015
Answer: 
I applied it sparingly and as directed to 2 test stones on my patio and after almost a week I still have some sticky areas. I tried pressure washing it but I couldn't get it off.
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Asked by
West Point, VA, USA
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August 27, 2015
Answer: 
It sounds like a humiidity issue. If you are having high humidity levels where you live and had applied the waterproofing too thick then it will take added time to dry thoroughly.
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Customer Reviews

Rated 2.7 out of 5 by 90 reviewers.
Rated 5.0 out of 5.0 by Tried and true product! I've used Thompson's Waterproofer for decades with great results. It is the tried and true product for protection from the elements. For this application I used it on the wood siding on my house after pressure washing. I used a pump up sprayer to apply it, and followed up with a brush to even it out. After one coat dried the wood passed the beading test with flying colors, the water I splashed on beaded beautifully. You simply can't go wrong with this product. June 18, 2016
Rated 5.0 out of 5.0 by Worked well on pavers I was a bit reluctant to try this after reading some of the reviews about it staying tacky and not drying properly, but I had no problems on concrete pavers. We used a small 4" roller to apply; the small roller did better than a full-sized one at getting into the bevels between pavers. For 120 square feet, we used about 1 gallon, so our coat was a bit thinner than recommended by the label. It was totally dry and not tacky at all by the end of the day (I'm in a very dry western climate so drying might take longer someplace more humid). We got an unexpected rain overnight and by morning the sealer was doing exactly what it was supposed to - water was beaded up on the surface and not soaking into the pavers (see photo). Note that I used this on concrete pavers that will form the foundation for a small garden shed; we didn't apply it to the wood railroad ties or any other material. June 2, 2016
Rated 4.0 out of 5.0 by Clearly effective This sealer was very easy to use. There was almost no change to the color of the deck with the application. Its effectiveness is evident when it rains though. Water beads dramatically on the surface. After reading the reviews of others I stayed off the surface for two days to allow to cure. When I checked after that time period the surface was not tacky to the touch. Overall happy with the product, and its application. I would recommend it. May 3, 2016
Rated 5.0 out of 5.0 by A must have for deck preservation after pressure washing! Thompson's 5 gal. Clear Multi-Surface Water proof water seal is a must have item after a deck or outside wood has been pressure washed. Pressure washing opens up wood pores and releases dirt, grime, and the preservative material that has been applied to the wood. The preservative material that was applied to the wood to preserve is now gone. It is imperative that the wood needs to be resealed to stop rot and decay. Thompson's clear multi-surface water sealer is the barrier between rot and decay that will preserve your wood and other porous surfaces. It goes on easy with a roller or sprayer for quick application. Just read the directions and go! We love this stuff! July 14, 2016
Rated 5.0 out of 5.0 by Thompson's WaterSeal Clear Multi-Surface Waterproofer I use the Thompson's® WaterSeal® Multi-Surface Waterproofer on the back yard fence. I like the clear so the wood can gray naturally. The water proofer sprays on easily for quick application. You can also brush or roll on, I just prefer to spray. The 5 gallon can covers up to 1000 square feet so the entire fence can be covered with one container front and back. I usually apply on 2 forecasted sunny days because you need to allow 24 hours for drying. March 18, 2016
Rated 1.0 out of 5.0 by Poor finish quality / blotchy and long to dry This product is terrible. Pours out of the can as a thick milky white substance. Easy to apply however takes long to dry and the finish quality is poor. I ended up with a blotchy/streaked concrete patio. I would not recommend this product. August 2, 2016
Rated 2.0 out of 5.0 by Clear my butt!!! I wish it was clear! It was that milky white UN-SPRAY-ABLE stuff. Had to do my entire board on board fence by brush. It does the job of sealing, but I probably will never buy Thompsons again. July 19, 2016
Rated 1.0 out of 5.0 by New Formula NOT FOR CONCRETE! Stay Away! Have used TWS products in past with good results however, this product is AWFUL for concrete surfaces. I have a 3 yr old covered 25'x13' front porch with a concrete floor which had never been sealed. As per label instructions, I cleaned thoroughly and dried for 4 days prior to application. Humidity was 45-65% with temps in the 58-83 degree range with no rain during and four days after application. A light and even coat of this product was applied with a roller at the label recommended 250 sq ft/gal rate for concrete. FOUR DAYS LATER THE CONCRETE IS STILL STICKY AND VERY SPLOTCHY! I I should have read the reviews on Amazon and elsewhere before buying this product. I have contacted the manufacturer to determine how to resolve this unacceptable issue! May 11, 2016
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