Thompson's WaterSeal 1-gal. Natural Cedar Waterproofer Plus Tinted Wood Protector - 100 VOC-21861 at The Home Depot
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Thompson's WaterSeal

Model # 21861

Internet # 202250184

Store SKU # 958840

1-gal. Natural Cedar Waterproofer Plus Tinted Wood Protector - 100 VOC

Thompson's WaterSeal 1-gal. Natural Cedar Waterproofer Plus Tinted Wood Protector - 100 VOC

This item has been discontinued.
The Home Depot no longer carries this specific product.



Model # 21861

Internet # 202250184

Store SKU # 958840

The Thompson's WaterSeal Waterproofer Plus 1-Gallon Natural-Cedar Tinted Wood Protector works well on outdoor wooden decks, fencing, furniture and more. The stain features a low-VOC, waterproof formula that is designed to resist mildew growth and UV damage. It can be recoated after 12 hours and provides coverage for areas up to 250 sq. ft.

California residents: seeProposition 65 information

  • Designed for use on outdoor wooden decks, fencing and more
  • Adds color without hiding wood grain
  • Formulated to help prevent water damage
  • Resists mildew growth and UV damage to maintain a pristine appearance
  • Covers areas up to 250 sq. ft.
  • Can be reapplied after 12 hours
  • Subject to or will include a PaintCare recycling fee in the following states: CA, CT, OR, RI, VT
  • Click here to learn more about exterior stain products
  • Actual paint colors may vary from on-screen and printer representations

Info & Guides

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Application Method  Brush  Assembled Depth (in.)  6.625 in 
Assembled Height (in.)  10.25 in  Assembled Width (in.)  4.1875 in 
Color  Natural Cedar  Color Family  Oranges / Peaches 
Container Size  1 GA-Gallon  Coverage Area (sq. ft.)  250 
Exterior Paint & Stains Product Type  Deck/House/Concrete Stain  Interior/Exterior  Exterior 
Low Temperature  No  Manufacturer Warranty  Satisfaction Guaranteed 
Opacity  Translucent  Paint Product Type  Wood Sealers 
Paint Type  Stain  Primer Required  No 
Sealer  Yes  Time before recoating (hours)  12 
Tintable  No  UV Resistant  Yes 
Waterproof  Yes 


Rated 3.4 out of 5 by 8 reviewers.
Rated 4 out of 5 by Restored our deck to 'as new' condition with 1 weekend's work When we installed our redwood deck, we treated it with the clear Waterseal however after 3-4 years with no subsequent re-treatment, the timber had greyed so we set about refinishing the deck a couple of weeks ago. The first stage involved pressure washing the deck with our pressure washer. After this was dry, we then cleaned the deck with 30 Second Concentrate which brightened the wood and helped lift out some of the old waterseal. We diluted the 30 Second Concentrate 50:50 with water and sprayed it on with our deck sprayer and scrubbed it with a long handled nylon kitchen/bathroom brush before rinsing it off with water from the pressure washer. Once this had dried, we applied a coat of Thomsons water seal using the deck sprayer and a 3" chip brush. We applied the water seal working down the deck along the full length of the planks, spraying an area of around 18-24" in length across 4-5 planks before brushing it on for proper coverage. With the sprayer you need to ensure that you brush out any oversplash on the area you have just treated, but its is very simple. We also applied the waterseal in the morning before the sun heated the deck planks, which made it easier to work with. Our 322 square feet deck used less than a gallon of Waterseal with the spray and brush method and we were very pleased with the results as it has left our deck looking good as new as can be seen from the pictures. All in all, about a weekend's work. April 1, 2013
Rated 4 out of 5 by good product This is a good stain to use. Since I would probably have to stain my deck every year anyway, this is a good economical product. I use my sprayer to dampen the deck and then I roll it on to spread evenly. By adding an extension pole to my roller, it went on fairly easy. July 8, 2014
Rated 1 out of 5 by Stay away from this product This product dries up patchy. I found it impossible to apply evenly. I tried different rollers. I spoiled a bunch of tongue and groove boards because I didn't want to give up on it thinking I wasn't doing it right. Should have stopped right away to limit the damage. I'm buying a Behr product now - twice the cost but still less expensive in the end given the unacceptable results and the cost for spoiled boards, stain, rollers,...... Very disappointing. June 21, 2014
Rated 4 out of 5 by It worked for me! I replaced all of my deck boards last year with pressure treated 5/4 boards from Home Depot. I read somewhere that you aren't supposed to seal or stain new pressure treated boards until they've had a chance to dry out a little bit. Well, I waited too long and my boards turned completely grey and began to curl up on the edges from the strong sunshine they get on the south side of my house. This spring and summer has been so wet that the boards actually flattened back out due to water absorption. I saw this as an opportunity to save my hard work and investment. I waited for a couple of days where it was going to rain and I used my pressure washer three times--first to strip the grey color off, second with a soap and bleach solution which I then scrubbed with a stiff brush, and then finally with clear water to rinse the deck. The directions tell you to wait 48 hours between pressure washing and treating, but I know how fast my boards curl up after they dry, so I only waited 4 hours and then I applied this Thompson's with the natural cedar color. I simply used a 4" brush and worked it in by hand. It took me about 4 hours to do a 10' x 24' area, but it worked great. It would have been faster but I had to work the brush into the grooves between the boards because the sides of the boards are easily visible due to the large gap caused by the shrinkage of the boards. The Thompson's goes on smoothly and easily and covers pretty well. My 240 sf deck took less than a gallon to cover. The color is very nice looking and more of a deep reddish color than an orange as was reported by a previous reviewer. I would have given it 5 stars except for the fact that there is a small amount of "blotchiness" that is probably not the fault of the product anyway, but due to the variations inherent in the density of the boards. Overall, I'm very pleased with the results and very happy that I was able to salvage my investment. July 17, 2014
Rated 4 out of 5 by Used for Cedar Fence in Arizona I applied this product to our wooden fence in Tucson, AZ. I have been pleased with the product performance. It did start to fail after 3 years, but the sun and heat here are brutal and I used a competitors product on the back side of the fence. Thompsons outperformed the other product by far. Even though I had to completely reseal the fence after 3 years, the side that was done with Thompsons was in much better condition than the other product. The wood still looks almost new, whereas the competitors product led to the wood showing more cracks and aging, and it was not even in direct sunlight, whereas much of the side that was coated with Thompsons was in direct, afternoon sunlight. IMO, go with Thompsons in warm weather, dry climates May 12, 2013
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