20 Best Water Sealant For Decks (2023 Updated)

This product worked exactly as advertised. A little goes a long way. I used it to seal the grout between the new countertop and existing tile backsplash. If you use too much it looks like there’s a bunch of Vaseline so use sparingly.

Just enough to put a sheer layer is enough for waterproofing. A couple of notes: You will see a bunch of reviews saying the container exploded on them. This is most likely because they didn’t break the seal.

You need to poke a hole in the seal in addition to cutting the tip off. Also, the product smells very strongly of vinegar. I don’t mind it. In fact I prefer it to the chemical odor of other sealants.

All in all I was very happy with this product.

I allowed this to cure for over 48 hours and it seemed dry and set. But the first time it got damp it turned to sticky jelly! I noticed there was no use by date on it which concerned me. But after using it it seemed to set well.

It never occurred to me that it wouldn’t hold up to dampness. And it was a brief period of dampness. This is the third Gorilla product I’ve bought from DiscoverMyStore, and all three have been unsatisfactory.

I’ve learned my lesson.

Item was very messy because tubing is not sturdy. The base of the tube kept popping off and the silicon was very hard to get to come from the top of the tube. Had to throw the entire tube away because the base kept sliding off and couldn’t stop the product from seeping from the top.

Really messed up my project. Not the seller’s fault at all. Just not good packaging for the product.

Great for small projects.

We have been using 5200 for so many years and we just love it. In 2017 days before Irma and Maria – two CAT 5 hurricanes hit the US. Virgin Islands. We were putting a railing on our deck outside and it is a tile deck so we didn’t want to screw it in as it would crack the tile.

We used 5200 to secure the bases of the posts. Not only did they make it through TWO CAT 5 hurricanes but 5 years later they are all standing. You got to love this product. We also used it on a plastic drawer from the freezer that broke.

Just a dab of 5200 and it is fixed. It’s like the old saying it’s not broke if you have duct tape. This product is far superior to anything we have every used. We also used it around the kitchen sink.

You will never be disappointed with 5200.

I purchased a 10-ounce tube of 5200 Marine Adhesive to seal the gap between a stainless steel pipe fitting attached to a through-hole on a galvanized container and a layer of fiberglass separated by an insulating layer of polystyrene foam.

After considerable research, I chose the 5200 Marine Adhesive because it was one of the few that would withstand continuous exposure to water. The instructions stated that it would become tacky after 24 hours and cure completely in five days.

Well, seven days later and the sealant was barely tacky and far from cured. I checked the manufacture date on the tube and found that it was only 3 months old. Next, I called the 3M helpline and soon determined that because it had been one of those typical southern California summer weeks where the temperature in the workshop hovered in the mid-nineties and relative humidity was less than 20%, there hadn’t been sufficient moisture to effect a complete cure.

I spritzed it with a bit of water and checked back the next day – sure enough, it seemed to be setting up somewhat. However, I’d already lost a week waiting for the sealant to solidify and couldn’t wait around for another week, so I decided to encase everything using additional fiberglass with a short length of pipe to decouple the inner and outer layers.

Fingers crossed, I hope this works.

I have used 5200 for over 40 yrs. It has been a good product. As of lately the quality of the packaging (the nozzle) has gone down the toilet. The nozzles won’t tighten and either pop off or leak around the flange.

Its hard enough to not get the stuff all over the place —I’m paying over twenty dollars a tube for a product that the 3m engineers can’t seem to figure out how to package. Here’s a hint guys—-turn to the right -makes things tight.

If you have a large gap, be sure to use backer rod in the Gap first and you will need much less product. The mixing and pouring was a hassle and be prepared to wear a mask as this stuff smells toxic.

I wish the bottle provided had a longer wider at the bottom spout so we could trim it to 1” and still be left with length. We used tall paint sticks to mix and place the tins on thick cardboard to protect the deck from spills.

For a nice finished look sprinkle sand on top while wet and leave to dry. The next day you can blow with a leaf blower or soft broom. We found the smaller portion premixed bags were more expensive, but we might opt for them in future to avoid excess mess, fumes and wasted product with less stress of having the rest of the mixed tin dry out before you are ready.

This three quart product is easy enough to use. Prepare the groove before hand. Combine two parts, mix well, load quart bottle and pour trying not to make a mess. Always clip the nozzle to the largest opening possible, it will get thick quickly.

The hard part is trying to get this product out before it sets up. When the manufacturer says you have one hour working time, they are not kidding. As hastily as I tried, I only managed to put out two of the three quarts before the remaining amount became unusable.

So, the word of advice to DIY’ers is to stick with the one quart pre-mix. You can manage one quart at a time at your leisure without the rest setting up until you are ready.

We have an old pool at a house we recently bought. The expansion joint filling had failed, and rainwater was causing significant shrink-swell problems with the concrete deck. Spent time with a multitool, grinding out bits-and-pieces of the old sealant and debris, then filled the gap to 1/4″ – 1/2″ from the top with pea gravel and sand and tamped it down.

Removed the Deck O’Seal’s gallon can ring using a can opener, then mixed the two cans together using a stirring drill attachment for 10 minutes. Poured into the plastic pouring (3 -4 refills) bottle and squirted it carefully into the gap.

It self-leveled nicely. We waited about 20 minutes, then sanded it lightly with fine sand. Though the weather was mild (low 70’s) by the last refill of the pouring bottle the compound was getting pretty thick and hard to squeeze out of the bottle.

It looks pretty professional and we’re hoping it lasts a long time; we estimate we saved more than $700 doing it ourselves.

(1) Ipe Oil arrived quickly and undamaged (shipped to Seattle area). (2) No shipping charge because cost of 2 gallons > $99. (3) Applied to new Ipe deck. 1 gallon covered about 550 sq ft (more than I expected).

(4) Darkens the wood considerably, but wood grain still shows nicely (about what I was expecting based on website pictures). (5) Used a 4-inch brush that screws on to a broom handle. Was fairly easy to apply (about 3 hours for 550 sq ft deck), not including brushing it onto fascia boards using 3-inch brush (about 1 hour).

(6) I brushed it in thoroughly and tried to spread it pretty thin because the directions warned about having to wipe off the unabsorbed excess if it was too thick, in order to avoid ‘tackiness’. There were only a couple of spots where I used a cotton rag to wipe up a little excess after an hour or so.

(7) One minor mistake I made was double coating a few spots after the first coat was mostly dry. Those spots are not tacky, but they are slightly darker and shinier. Anyway, that was my own inexperience, not a problem with the product.

I expect the double-coated areas to become less noticeable as the finish weathers. (8) It’s only been a few days so I can’t comment yet about how the finish will weather. Since I’m in the Seattle area, I expect the deck to be wet fairly often due to the winter drizzle.

I’m not worried about the Ipe (very dense wood). The purpose of the Ipe Oil is just to preserve the reddish brown wood color for a while. I’m hoping to get 2 years per application, but will have to wait and see.

I was in need of the IPE Oil by the weekend so I could seal my porch. There was NONE available locally. I called on the manufacturer and they suggested I call DIY in Green Bay (over 3 hrs from where I live.

The lady I spoke with was very familiar with the product, and was able to still get it shipped on Thursday, UPS overnight for only $16. 95. And the price was very competitive. AWESOME!!!.

This is a great product recommended to me by the lumber company I purchased my IPE wood deck materials from. East application with lasting luster for beautiful hardwoods. Ordering through DIY is super helpful as this product is hard to find in brick n mortar stores.

We had our slightly sloped driveway/parking area done in a colored stamped concrete and it is beautiful. We live at 7,000 feet in Flagstaff, AZ and get quite a bit of snow in the winter. Little did we know that our driveway would become so slippery when it snowed, it was impossible to stand on.

making it extremely dangerous. We carried this stamped concrete theme in to our backyard where it’s flat and we put in a hot tub. I used Slip Doctors Deck Grip around our hot tub since we found getting out with wet feet on to the stamped concrete was very slippery, the product works great! For the driveway because of its slight slope, I put down a coating of Deck Grip and while it was still damp, I sprinkled some sand over the damp area.

Once it had dried, I put a 2nd coating of Deck Grip over the sanded area so as to trap the sand in between the coatings. In doing so, we lost about 10% of the luster (simply because of the sand not because of Deck Grip) but gained 100% confidence that there should be no slipping on our driveway now! I’m not sure if the sand was necessary but I didn’t want to get in to winter and realize I needed a little more grip, so I went overboard just to be sure.

I used five (5) gallons on the driveway/parking area and 1/2 gallon around the hot tub. I will be purchasing another five (5) gallons in the spring to finish off the backyard. This is a great product and I would highly recommend it to anybody who needs some texture on a slippery surface.

I decided on this product based upon customer reviews. I installed it on a sealed stamped concrete sidewalk and patio. I was concerned the sealed concrete could be slippery with wet feet. I just installed this over the weekend and I have not tested it on wet feet yet, but it does appear to have more traction to prevent falls.

Installation was easier than anticipated. I rolled it on and brushed the area where puddles formed. Use light pressure when rolling to prevent foaming. The foam seamed to dissipate and dry clear. At this point, I am optimistic this will create more traction and prevent falls.

One gallon covered approximately 350 square feet using a light coating. I applied two light coats as instructed.

I ordered this product because we have an issue with “concrete dust” from the pool deck getting into the pool. I was worried about the degradation of the pool deck and the issues the “dust” might create in the pool.

Because our pool deck was so porous, it took a lot more product than I originally thought for the first coat. But the second coat took significantly less and the seal is wonderful. The texture of the product is great for non-slip and we are really enjoying the “dust free” advantage of this!.

Some tiles fell off the edge of our pool and this product was simply amazing. It glued that back on in no time even under water and i was able to do even the grout lines. Perfect solution that saved me having to look for someone to fix it.

works great. sticks to everything under water, clean up a bit tricky but I had great results with spa leak problem, so happy. bit expensive, wish they had 1/2 size tube.