Model # 11805

Internet #100187406

Store SKU #621102

Thompson's WaterSeal 5 gal. Waterproofer Plus Clear Wood Protector

Thompson's WaterSeal

5 gal. Waterproofer Plus Clear Wood Protector

Frequently Bought Together

Product Overview

Get complete protection for outdoor wood with the THOMPSON'S WATERSEAL 5-Gallon Waterproofer Plus Clear Wood Protector. The protector is designed for use on decks, fences, outdoor furniture and other exterior wood to prevent water, sun and mildew damage. The finish helps to ensure that the wood's natural color withstands the test of time.

California residents: see   Proposition 65 information

  • Coats exterior wood to prevent water damage
  • 1 container waterproofs up to 1,000 sq. ft.
  • Dries clear to help maintain the wood's natural color
  • UV and mildew resistant for durability
  • Dries to the touch in just 48 hrs. to provide quick protection
  • Requires only 1 coat to protect wood efficiently
  • Exceeds industry standard ASTM D-4446 for waterproofing wood
  • Click here to learn more about waterproofing
  • Online Price includes Paint Care fee in the following states: CA, CO, CT, MN, OR, RI, VT

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

Once applied and dried - may we paint over the waterproof coat?

Asked by: Denny
It is not advised to paint over this waterproof coating.
Answered by: CommunityAnswer
Date published: 2016-01-26

Can we tent this 5 gallon with a stain color, if so what would the stain ratio be to this 5 gallon container

Asked by: Tonya

Used with Paint?

It was noted in a previous question it was not advisable to paint over the water sealant. Would it be feasible to put the water sealant OVER painted surface as sort of a top coat?
Asked by: BeagleDad

How many years until have to reapply?

Asked by: Dennis
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Customer Reviews

5 gal. Waterproofer Plus Clear Wood Protector is rated 4.4 out of 5 by 15.
Rated 5 out of 5 by from Product being phased out This high-VOC, solvent-based formulation of Thompson's WaterSeal Waterproofer PLUS Clear Wood Protector is being replaced by a low-VOC formulation that may not be as easy to apply. If you want to use the high-VOC version of the product in the future, you may want to stock up now. The low-VOC formulation of Waterproofer PLUS Clear Wood Protector is currently being sold in cans that are virtually identical to the cans used for the high-VOC formulation, so you have to look for the VOC information on the side of the can to know which product you're buying. The high-VOC formulation will say "Maximum VOC: 600 g/L - 5 lb/gal," and the low-VOC formulation will say "Maximum VOC: 100 g/L (0.80 lb./gal)." Although high-VOC Waterproofer PLUS says it is for wood substrates only, I successfully applied it to a clean, new cinder block and got perfect beading in rain after it had dried for 48 hours. High-VOC Waterproofer PLUS did permanently darken the cinder block to a medium gray from a very light gray.
Date published: 2013-10-27
Rated 5 out of 5 by from Can't beat the price We wanted to buy the expensive stuff, but none of them got good reviews. We were also worried about how the tinted vs. clear would actually color the wood. So we decided to try the clear since the fence was brand new cedar. We used a $10 hand pump which worked wonderful. The Thompson's also went further than we expected, so we have a few 1-gallon cans left over. The 5-gallon gives a nice break in price, but is a little more difficult to pour and can be messy. The 1-gallons were a breeze. Make sure to cover any plants as they will turn yellow or black where there is overspray. Finally, we were very happy with the color. When the fence is in direct sun - you can't tell a difference. When its in indirect sun, the wood looks a bit darker - almost like it's wet, keeping that beautiful cedar color. I took a picture of a spot where I couldn't spray due to a large plant in the way. This was taken approx. two months after I applied the sealer.
Date published: 2012-11-01
Rated 5 out of 5 by from THE BEST PRODUCT AVAILABLE FOR PROTECTING A WOOD DECK I have a large exterior wood deck at my home, with the decking made of pressure treated pine. I have used Thompson's CLEAR Water Sealer for many years to protect this deck from wood deterioration (mildew/rot) and to keep it looking attractive and am 100% satisfied with this product. It is the BEST ONE in this class of products by various manufacturers. Be certain that you get the "CLEAR" version; which will let the natural grain of your wood show through and will enhance the look of that grain. To get an idea of what your wood will look like after it has been applied, just wet the wood with water and see how it then looks. When the Clear is applied it will look like this but CONSIDERABLY better than when it was just wet with water. After you've applied the CLEAR any water will just bead up on the surface of the wood, rather than being absorbed into the wood. A single coat of Thompsons will suffice and should last for about 2 years. I STRONGLY SUGGEST that before applying the Thompsons that you pressure clean the surface of the wood with a high pressure water machine capable of producing 3,500psi at the nozzle. That HIGH PRESSSURE cleaning will make your wood look LIKE NEW, regardless of how old that wood is. This step is as important as applying the Thompson's water seal. Let the now cleaned wood dry for at least 2 days and then apply Thompson's CLEAR Water Seal and you'll be amazed at what you're now looking at. It will look better than you can possibly imagine, usless you have actually done this before and have seen the results. It is well worth the effort. DON'T USE A SEALANT THAT HAS COLOR IN IT ! That's my last recommendation to you. Do the "CLEAR" FIRST. Only then, if you're not satisfied (I cannot imagine your not being satisfied) only then apply a colored sealant to your wood, which you can easily apply over the CLEAR.
Date published: 2013-05-19
Rated 4 out of 5 by from thompson waterseal I found it very easy to used and was a very good product. I think that the price was a little high but it did the job. I also found a rebate form from thompson's on line so it helped. thanks
Date published: 2009-05-20
Rated 5 out of 5 by from Product easy to use and does what it claims I used two 5 gal. containers to treat my deck and wood fence. I used a garden sprayer, which made application easy and quick. After a couple of rains, I can see the water beading up, which tells me the product is doing what it is supposed to do.
Date published: 2012-07-24
Rated 5 out of 5 by from Can't beat it I got it on sale for about $10 off. Easy to use with hand pump sprayer. Great spout for pouring. Covered just about what it says it will cover in square footage. Gives wood (yellow pine) a rich, golden brown look. Follow the instructions...apply one thin coat and water beads and pools up and does not penetrate the wood.
Date published: 2010-07-28
Rated 5 out of 5 by from Excellent product Applied 15 gallons to a large dock on a lake. Application with a garden sprayer was very easy, and I'm sure worlds easier than painting would have been. Very pleased with the results after several weeks. Time will tell, but if if lasts at least 3 years I'll be more than happy apply the product again.
Date published: 2013-06-18
Rated 4 out of 5 by from First time using green labeled product, always used red label. Used pump up hand sprayer to apply on powerwashed deck wood about 20 years old. Job went smooth with cheapy $10 sprayer. Cleanup easy. Wood had been treated every 3 or 4 years with red label Thompsons. Wood developed nice somewhat darker shade after application. Will have to wait a couple of years for results and compare.
Date published: 2012-09-12
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