STONETECH Bulletproof Sealer, 1 Quart/32 OZ (946ML) Bottle

Good solid product

I mean, I’m not going to deliberately spill something on the finished surface to see how well it works, now am I? I used this to seal a hearthstone (not a countertop). I picked it after reading a lot of reviews of sealers on Amazon. I followed the directions and made sure that it stayed wet for 10-15 minutes, to allow the sealer to soak in. After reading all the reviews, I was worried about the blemishes and cloudiness that some reviewers wrote about - but I saw nothing of the kind. At the end of the application time, I wiped it down with freshly laundered white sackcloth towels. It dried evenly, and looks good - not shiny (we definitely didn’t want glossy). Before using it on the hearthstone, I “experimented” by applying it to a small section of a marble table top (I flipped the top over and applied it to the underside) and also to an inconspicuous area on the side of the hearthstone, to see how it flowed during application, and to see if there would be any change to the color of the stone once the sealer dried (answer is “none”). That helped me be more confident when it came time to brushing the sealer on the top, wide area of the expensive, extremely heavy and hard to replace hearthstone. While I expect someday some with a glass of red wine is going to trip and spill it on the hearthstone, I’m not going to tempt fate and deliberately spill something on it, so I can’t actually say anything about that. Also just FYI, the directions for the product say to re-apply it in something like 3 -5 years. Not sure I’m going to remember to do that. Finally - it had virtually no smell at all, so that was a big plus.

I was recommended this product by several online forums for sealing granite countertops, since I had noticed in my new home that water stains were appearing quite easily on light countertops in three bathrooms.The product was easy to apply and the instructions were clear. The product has a water-like consistency. I used foam paint brushes for application - a large one for the open areas and a small one for the tight spaces around the faucet and the edges of the countertop.The process took a couple of hours in total for a large kitchen countertop and three bathrooms.I still notice temporary water staining on the bathroom countertops which are light in color. The kitchen countertop is darker so I'm unsure on the effectiveness for that.I certainly *feel* like I did something by applying this, but I don't feel like the results are phenomenal. I'll probably continue to use this product every couple of years even if it's just for the peace of mind.

Love this sealer. I had used another one on my new granite countertops, but it was in a finger-spray bottle and my hand was cramping before I finished. And I used up the entire (expensive) bottle in one application and still missed things and had problems trying to prevent overspray. And even then I wasn't sure it was sealing properlyRead very good reviews of this, so bought it. Also, I found out a better way to apply it. I used a latex glove on one hand. Poured a puddle of sealer in the middle of the counter and spread it with the gloved hand. I could easily go around edges and corners this way, and also easily detect dry spots where the sealer was absorbed instead of sitting on top and add more. Love this sealer. I had used another one on my new granite countertops, but it was in a finger-spray bottle and my hand was cramping before I finished. And I used up the entire (expensive) bottle in one application and still missed things and had problems trying to prevent overspray.Read very good reviews of this, so . This worked so very well, and it worked so much better than my original sealer. I'm now much more confident that I can cook in my kitchen and USE my countertops... after all, I bought them to use them, not just to look at them.I'll adjust this review in a year ... but so far I'm very happy with it.--- added a month later...It's a very good sealer against water. But wipe up any oil based spill right away. Oil will just continue to penetrate the stone and spread. I have kashmir white granite... One of the most porous (I've heard). So my experiences will be a 'worst case scenario'. My one bad oil ring that was left on the granite horrified me. Bt after a couple weeks, it kept penetrating and spreading, and now it's just a hard to see shadow on the granite that no one else can see. The one thing about this sealer is that it gives me time to wipe up the spill. I'm definitely going to continue to use it.