Model # TH.042821-16

Internet #204813838

Store SKU #1000034872

Thompson's WaterSeal 1 gal. Semi-Transparent Maple Brown Waterproofing Stain

Thompson's WaterSeal

1 gal. Semi-Transparent Maple Brown Waterproofing Stain

$2697 /each

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Frequently Bought Together

Product Overview

Thompson's WaterSeal Waterproofing Stain provides complete outdoor wood protection. It waterproofs long after the initial water beading is gone. Use on decks and fences, outdoor furniture and exterior wood.

California residents: see   Proposition 65 information

  • Shows medium wood grain and medium color
  • 1-coat protects 4 years on decks or 6 years on fences and siding
  • Applies to freshly cleaned damp or dry wood
  • Prevents water damage
  • Advanced polymers provide fade resistant color
  • Coating resists mildew and UV damage
  • Online Price includes Paint Care fee in the following states: CA, CO, CT, ME, MN, OR, RI, VT
  • Which type of exterior paint is best for your home?

Info & Guides

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Container Size
1 GA-Gallon
Coverage Area (sq. ft.)


Application Method
Brush,Paint Sprayer,Roller
Coating Product Category
Color Family
Browns / Tans
Dry to touch (min.)
Paint/Stain Base Material
Paint/Stain Clean Up
Soap & Water
Paint/Stain Key Features
Mildew Resistant,Sealer,UV/Fade Resistant,Waterproof
Paint/Stain/Waterproofer Product Type
Deck, House & Concrete
Substrate/Surface Use Type
Time before recoating (hours)
Tinted / Base

Warranty / Certifications

Manufacturer Warranty
Satisfaction Guaranteed

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Customer Questions & Answers

Can you use this stain on pressure-treated wood?

Asked by: David
Yes. But read the directions first. I would let the pressure treated wood sit for a couple of months before applying a stain if it was me.
Answered by: Contractor
Date published: 2017-02-26

Does this product help reduce splintering of the wood? Does it fill small gaps in wood?

Asked by: jess
Hello. Our products are waterproofers, which seal out moisture. They don't reduce splintering. Also, our products are meant to be applied thinly and are not thick enough to fill in small gaps in the wood. Regards, Thompson's Customer Support
Date published: 2017-05-30

Is it better to apply to a fence with a roller or with sprayer?

Asked by: Dulce
Sprayer. Didn't try roller, but as I went over certain plank boards, it was clear to me that the paint was soaking into the wood much better with a sprayer than it would with a roller. The cost of the sprayer will be off set by the hours you save.
Answered by: Danke
Date published: 2017-07-11

Is it water based or oil based stain?

I have old based stained deck and would continue like to use oil base stain / sealer. Is Thompson's WaterSeal Waterproofing Stain Semi-Transparent Maple Brown oil based stain ? Thanks!
Asked by: Joe
This is a water based product. That is one of the features that I liked the most about it.
Answered by: Contractor
Date published: 2017-02-25
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Customer Reviews

1 gal. Semi-Transparent Maple Brown Waterproofing Stain is rated 4.5 out of 5 by 41.
Rated 5 out of 5 by from Best Deck Finish Product We used Thompson's Water Seal Stain on a very large deck at a previous house that we owned and had great experience with it. At our current house we tried a new deck coating product, and it did not perform well at all. We have scraped all of that off and gone back with this Thompson's Water Seal. I love this product. I won't ever use another deck finish product again. The directions are very clear and easy to follow. The 1 gallon can works great, and pours well. The stain is easy to apply. Clean up directions are easy to follow. I simply don't have any negative experiences with this product to report.
Date published: 2017-02-25
Rated 1 out of 5 by from I live in Minnesota. Last year August 2016, I decided to use this product for staining my deck. I... I live in Minnesota. Last year August 2016, I decided to use this product for staining my deck. I put on 3 coats and followed the directions to a T. The product didn't even survive the winter before it started to flake off. I contacted Thompsons and they gave me the run around asking if I did the water test (Where you dump water on the deck to see if it beads up or soaks in. It needs to soak in to prove that it is porous enough to accept stain) and questioned me about the other directions. I told the guy who I was corresponding with that of course I followed the directions because I only wanted to do this once and have it last a few years. The guy said that the company stands by their product and that I would just have to send in the original receipt and they would gladly refund me. Who this day in age keeps a receipt for stain or paint? The answer is me from now on. I am not really as angry about the money as I am about the fact that I am going to have to redo this time consuming job. Not only will I have to restain, I have to strip off this inferior product adding more time and money. I will never again use a Thompson's product. Not only is their product inferior in the northern states, their customer service leave a lot to be desired. I bought 5 cans of this product and spent 2 weeks prepping and working on this project, since I have a large wrap around deck, just to have to do it again not even a year later. Unacceptable!
Date published: 2017-03-31
Rated 5 out of 5 by from I used the brown maple to stain my fence that... I used the brown maple to stain my fence that had aged to a really unattractive gray. I was surprised at how easily it applied with a paint sprayer and love the rich color. Water beads up beautifully so I know my fence is protected. I used two coats on a 2200 sq ft fence and it took 20 gallons
Date published: 2017-05-16
Rated 5 out of 5 by from The water proofing works well, as I can see the water beading when I sprayed water around the law... The water proofing works well, as I can see the water beading when I sprayed water around the lawn and it gets onto the fence. The color is a nice maple brown tone. Using a paint spray gun dramatically shortens the time. However, one has to be careful in applying consistently as areas does streak if over-applied. Due to the transparent nature of the paint, sometimes it's not apparent that one had over-applied. Recommend one starts at a part of the fence that's not too public, so that one can learn and fine tune. The streaking was apparent when the paint dried (not when it was wet). Cleaning the paint spray gun after was easily done with just water. While I measured the fence footage to only require 7 gallons, I ultimately used 10 gallons. I applied one coat only. The discrepancy in calculations and actual usage, was perhaps due to how much I opened the trigger in my paint spray gun (and the volume sprayed). But am happy that I do not have to spray a second coat with this as one coating looks great.
Date published: 2017-07-11
Rated 5 out of 5 by from Like it so far. Only been on a week. It went on very well. We used a electric sprayer and back br... Like it so far. Only been on a week. It went on very well. We used a electric sprayer and back brushed our fence. Very nice color. Not too dark and can still see the woodgrain.
Date published: 2017-07-20
Rated 5 out of 5 by from Dress Up and Restore Decking Semi-transparent to allow wood grain to show through; speads easily; long lasting results; rich color to add elegance to deck area
Date published: 2015-05-27
Rated 5 out of 5 by from Good stuff and good for 2~5 years depending on surface. The hardest part of doing this job is getting the weather and my available time to coincide. Cleaning up the overgrowth of plants takes more time than application. Perhaps Spring or Fall would probably be the best time to apply, when the plants can be trimmed back or not growing... Color / tone form gallon to gallon is good. They matched quite well. We used rollers, brushes and tried a 'garden sprayer' for the application. I used a 'long nap' 6" rough surface roller, and 2" 'disposable' brushes. No point in using a quality +$25 brush on the rough wood surface. I purchased a "Flo Master 1125d" specifically for this task last year. If you use a sprayer, make sure is is compatible for this task. The one I purchased at HomeDepot last year that was listed as suitable for this application. There are pictures of the paint/stain cans on the box. It proved absolutely unusable for this application; it was more of a mess than it's worth. My daughter, in her words; "I would love to write a burning review of that item", as she cleaned it.. We found the best method was: The long nap roller (with an extension pole/stick) was the fastest for the face boards, and brush to apply the product to end grain and between the boards. Pictures attached show a small section of the fence before/after. An aged, (+10 year old) section of fence (~14 feet long / 200 sq/ft) sucked in the preservative and needed almost a gallon. Obviously, your mileage will vary, perhaps I'm over applying.... But only another ~ 70' to go...
Date published: 2016-09-06
Rated 5 out of 5 by from Very easy to apply, dries fast Like that this is more of a thin paste than just a liquid, it makes it very easy to apply with a brush. We applied it to brand new pressure treated wood on a trailer deck, and it looks great. I did two boards at a time and don't see any brush marks. Not sure how long it will last on a trailer but says 4 yrs on a deck so will probably depend on how hard we use the trailer. You can see a little of the green on the pressure treated wood since this is a semi transparent. I also did a regular 2x4 piece to see the color difference and it wasn't very different, just a bit lighter on the untreated wood. Overall very pleased with the end product. Love the easy water cleanup.
Date published: 2014-07-25
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