Thompson's WaterSeal 5-gal. Waterproofer Plus Clear Wood Protector-11805 - The Home Depot

Thompson's WaterSeal

Model # 11805

Internet # 100187406

Store SKU # 621102

5-gal. Waterproofer Plus Clear Wood Protector

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

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



Model # 11805

Internet # 100187406

Store SKU # 621102

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: seeProposition 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
  • Subject to or will include a PaintCare recycling fee in the following states: CA, OR, CT, VT
  • Click here to learn more about waterproofing
  • Subject to or will include a PaintCare recycling fee in the following states: CA, CT, OR, RI, VT, MN

Info & Guides

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Assembled Depth (in.)  10.81 in  Assembled Height (in.)  13.75 in 
Assembled Width (in.)  10.81 in  Coverage Area (sq. ft.)  1000 
Product Size (oz.)  640 
Color/Finish  Clear  Dries clear  Yes 
Dry to the touch (hours)  48  Hazardous Code 
Interior/Exterior  Exterior  Maximum hydrostatic pressure (lb.)  0.00 
Number of coats recommended  Paint Product Type  Wood Sealers 
Product Form  Liquid  Textured  No 
Time before recoating (hours)  UV Protection  Yes 
Warranty / Certifications
Manufacturer Warranty  Satisfaction Guaranteed 


Rated 4.6 out of 5 by 14 reviewers.
Rated 5 out of 5 by 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. November 1, 2012
Rated 5 out of 5 by 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. October 26, 2013
Rated 5 out of 5 by 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. May 19, 2013
Rated 1 out of 5 by not good used this product the same way for 12 years and this year got little shiny spots all over my deck.porch and wood walk what a mess. thompson said must have put too much toocheap to do that customer service the worst I've encountered .... Pat Conti August 8, 2014
Rated 4 out of 5 by 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 May 20, 2009
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Store Exclusive. This item is available for purchase in select stores only.