1 gal. Moisture Stop (4-Pack)

This product is supposed to stop moisture from seeping through your concrete floor (or wall) in the event there is no vapor barrier, or it has failed, on the other side of the concrete. I am 50% confident that it might have done that job, so I would tell you to try it, only if you have no other options. (We get moisture in the Summer, so I can't currently test) The instructions and warnings are incomplete and inaccurate. The instructions say the product can easily be cleaned up with soap and water. This is false. After the product has dried, which it did following the instructions exactly, you need to mechanically remove the dried product using a wire brush or grinder. It was easy to use excess product or to splash it around on unintended targets as the instructions indicate to "completely saturate the floor" and "work it around" with no warning about splashing it about or stepping in it. After application, the instructions indicate a waiting period of a minimum of two hours before rinsing the product off. The instructions also threaten that if you fail to rinse off the product, after waiting at least the two hours, "effloressence" will appear, and you will have to buy Rust-Oleum Efflorescense remover. (Which is a set of processes of applying and rinsing to be sure this new "remove the product you just put down" stuff is removed properly. Instead, as you will note, I chose to wire brush and grind it off to be certain.) Effloresence is caused by water-soluble salts that seep out of concrete. So even if it did appear, as they say, soap and water should clean this up as well, right? Wrong. In my case, this was not effloressence at all, but leftover, unrinsable, un-scrubbable Rust-Oleum Moisture Stop. (Water and vinegar solution was also suggested many places online as an easy way to remove effloressence. Vinegar solution was attempted but was ineffective - to my mind proving the residue was not actually the water-soluble salts.) See attached photo of where I stepped on a previously sealed and painted area of my basement, this dried in under the two hours to a white footprint. The footprint, as well as several others like it, had been scrubbed and rinsed and shop vacuumed several times with soap, water, and vinegar solution before the photo. Watch out where you step or splash product! The shoe print is not from effloressence that has flowered out of the sealed concrete, it is leftover rustoleum product (the concrete there is sealed already). See attached photo of white chalky haze that comes right back after scrubbing with a deck brush, soap, water and vinegar, rinsing several times and removing water with shop vac. The directions were followed completely. In the end I had to spend about 10 hours over two days scrubbing and grinding the product off my basement floor. Not to mention the time wasted by attempting to "rinse" off the product with water, as directed by the instructions. Maybe instead the instructions should say to wait "no more than two hours" instead of "wait at least two hours" before rinsing??? If you use this product. Use it sparingly and in concentrated areas. Avoid stepping in it, or letting it run onto ANY other areas. Be prepared for some removal process. *I failed to include a photo of the treated concrete with the excess product left over, I did have to wire brush the whole floor, grinding/sanding some spots, and had to remove excess product from these areas as well, that had not been previously sealed. THIS IS NOT A PRODUCT FOR A DO-IT YOURSELF-ER UNLESS YOU DO NOT MIND POTENTIAL HOURS OF WIRE BRUSHING AND/OR GRINDING!

love this product finally something that works old basement was very humid never got water but it was always damp feeling. now even after heavy rains feels dry don't need to run the dehumidifier in the basement anymore.easy to apply however flooding the basement with water after application is a bit difficult. indoors I just left it white and looks marvelous. almost looks like a marble floor. had planned on painting over top of it but think it looks great just as it isjust use a garden sprayer missted water on it.then use a scrub brush and a Shop-Vac and got up the residue.so nice to be able to wear stocking feet in my basement.love the fact that it's non-toxic not you me was able to do it inside in the winter.had respirators gloves and goggles already went up taking them off cuz it was fine.

This product comes in a sturdy jug - it is well constructed to not leak. The lid has a large mouth, so it is easy to pour without splashing. The lid seals tightly. The product has low odor and dissipates quickly. The product has about the consistency of water and brushes easily to coat the surface. It is clear and does not add a gloss to the surface. I applied at about 60 degrees F, the product was dry within an hour. Although the product did not seem very hydrophobic when I sprayed it with a hose after it dried, I am hopeful it will serve its intended purpose.

I used this Rust-Oleum moisture stop, to seal the floor of my garage. My floor is very old and pock marked, so it holds water puddles which eventually soak in. I first broomed out the garage, then I used my leaf blower to get all the fine dust out. I pored out smaller amounts of sealer onto the floor and then broomed it around, until the entire area was done, I could see a difference right away. The sealer brought a shine to the floor as it was going on, After it dried you could still see the shiny surface. A few days later when I put the wet car in the garage, the water puddled up on the surface and didn't soak in. I am well pleased with this product and am recommending it to my friends. Two gallons was enough to do my 2 stall garage.

This product is what I needed at my aging cottage on the lake! The basement of my lakehouse has many floor cracks which allows water to seep into the basement when it rains. I tried this product out to see if it would seal the cracks. Prep work needs to be done ahead of time. Clean the floors thoroughly and use a wet-vac to get up all water and debris. Put on safety glasses and, using a low pressure sprayer, saturate floors and/or cinder block walls. As it begins to dry, make sure you wet it down (using the low pressure sprayer) every 15 minutes just so it stays wet for 45 minutes. The instructions on the bottle are pretty clear. You may get areas that look like dried salt patches so just rinse those areas really well again. Waiting too long will require a separate product to remove the salty appearance. Two days after applying this, we had a heavy rain and I was pleased to see that I did not get water coming through the many cracks in the basement floor that I previously had.

My 50 year old garage floor was stained, cracked, pitted, and leaked up moisture after rains, and any time an impermeable plastic tub was set down overnight it was wet underneath - this fixed it along with patch and coatings

My shop floor was poured without a vapor barrier laid underneath. Even after two years of "hoping it would totally cure" I knew that paint would not stick. I followed all directions and treated the floor with "Clean & Etch", Moisture Stop, then Epoxy Paint. I have tested the floor and there is no more moisture coming up from underneath so I am happy.

Seems to stop moisture but winter will be the big test

Follow direction for preparing surface prior to application. You will be happy when you do! Coverage spec is exact, so purchase enough first time. Application was easy, used 2” chip brush for edges and corners. Rubber squeegee for rest of area. Rinse well, follow directions, ready to paint when dry (<3 hr. after application.) Paint adhered evenly to sealed concrete.

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