Stain Proof Waterbased Penetrating Sealer - 1 Qt., Protects Against Water and Oil Stains, Sealer for Concrete, Paver, Driveway, Stone & More; for Indoor & Outdoor Application

Not a lot for even a mid-sized project. I used in a small area of my backyard, and it barely covered it.It does repel water as promised and I’m happy with result. My concern is how often does it need to be reapplied. This is an expensive product for a very small amount. If it needs to be reapplied every year as some mentioned on the product page at Amazon, the cost will be unbearable. I’ve used similar products in my outdoor kitchen and other areas of my backyard, and they worked well, but they are supposed to last from two to three years.For immediate performance, I would rate it with five stars: water repelling is clearly visible. For durability, I would give it two stars if it lasts only a year, and three stars for amount vs cost. This type of product is expensive, but I would rather spend more and get an amount that would cover at least 300 sq ft. It doesn’t even get close.

Disclaimer... I've never used a sealer before, so this is my first experience with any sealer.First let me say that I was NOT surprised by the size of the product, as many other reviewers have commented. I know exactly how big/small 1 quart is (32oz) and that's exactly what I received.I used this product on a marble slab installed as a shower seat and it worked fine. It was easy to apply and buff away and is invisible. It seems to do it's job and prevents water from penetrating the surface of the stone (the water beads). That said, I'm sure all sealers would provide similar results immediately after it's applied. The true test is how long it holds up to daily water exposure and to regular cleanings (shower), but only time will tell.Four stars because it's pricey, and I won't know if it was worth the price for decade (hopefully).

I think the biggest piece of information needed (that at the time of this review isn't shown in the product listing) is "5.Total application rate is approximately 1 quart per 40 to 120sqft. or 1liter per 4 to 12sqm (1 gallon per 160 to 480 sq.ft) depending on surface absorption." (quoted from inside product label.) I used this product on 6foot wide 5-rise concrete stairs, and the quart was just enough to do the job. So I can't speak for how much of this you may need on a stone wall, or a tile floor, etc (as they indicate it may vary based on the condition of the material and how much it absorbs) but would just say that you should first factor in the type and condition of material to coat to determine if it is likely to be closer to the "40sqft/quart" or closer to the "120sqft/quart" to not be surprised to the amount you will need.Just like every other reviewer so far, I can only attest to the apparent immediate result and not to the long-term longevity of the application. In theory if you properly thoroughly cover to penetrate and coat all porous surface areas this should bond with the material in such a way to permanently seal and protect the material. So, while you may think it seems expensive per coverage area, don't skimp (ensure thorough coverage) and hopefully you'll find this is a 1-time investment that protects for a long time to come. My particular bottle arrived 8/24/22 with a manufactured date "JUNE 18 2021" and a use by date "7/2025".

I expected this to come in a much larger container, although I could have read the listing more thoroughly. I'd say it's about a third of the size your normal stain or water repellent jug. If it lasts a long time then it's possibly worth the money but currently I can't say one way or the other and Only Time Will tell. It does repel water as promised

Easy to apply just like other similar products. It did leave any residue and the water was beading up after using in my shower. I took off one star because it is a little pricey for the size against similar products

I was a little surprised when I received the bottle size as it is relatively pocket-sized. Hope the effect can be obvious.

I have a slab outside the basement that is in terrible shape. I have pressure washed it multiple times. I really wanted a way to preserve that - and I believe this is it!!

I had to use a pressure hose to clean the surface of my steps immediately outside my door. Then I applied this penetrating sealer with a 3" brush, and I applied the second coat while the first one was still wet.I like the result because water is indeed repelled, yet it didn't change the color of my concrete or brick (the steps involve both because the landing is concrete while steps are brick). This could last 10 years before needing another application, because this site is neither in the sun nor in a high-traffic area.