STONETECH® Bulletproof® Sealer, 1 Quart/32 Oz

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.

Treated my two bath sinks and kitchen counters, all granite. Easy to apply, piece of cake. Use flood coat technique. Just keep the counter wet for 20 minutes (I went a half hour) using a cheap, small paint pad. Every time you see a spot dry, whip the pad over it, that's all. As time passes the counter will tend to stay wet, that means the the granite has absorbed all it can (which is what you want). Then wipe dry with paper towels. Done.No stink, no nasty solvent smells, but I kept the exhaust fans running.So far so good; actually, I can't tell it's on there, totally clear, does not change the patina of the counter color (which is good).[UPDATE]: December 2015: water still beads up on the counters, no stains, great shine. I think that the folks having problems are not following proper procedure; just do what I did and you will have good results on granite (I can't verify other types of materials).[UPDATE]: February 2018: water still beads up, there is still no staining of any kind on the counters/sinks. I use a little Windex once weekly to clean, and the shine comes up like they were new. I think this summer I will give it another quick coat, just for normal maintenance.Probably no one will read this because my first post is old, but thought I would post anyway :)

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.

One of the best you can use. One star deducted because it needs to be reapplied fairly often and it's really not "bulletproof" I had used this product for years on my Cashmere Ivory countertops and because of what I just mentioned I thought I'd try Sen-guard. That was awful and it soaked up water more than it did before I put it on. There was zero protection at least on this type of white absorbent stone from that. Then I tried professionally applied Granite Shield and got the same result as the Sen-guard. That cost hundreds but I got my money back and was told they never seen that happen before. I am now back to this Dupont Stonetech Professional BullietProof Sealer. It seems to work best and I use it around every 3 months now, especially around the sink area.It is so difficult to find a reliable stone protector. As a previous kitchen designer, I know that many stones (especially the darker denser ones) are already pretty resistant to stains and people get sold these sealers more than they need. They then think it's the sealer that is wonderful when really oftentimes it's just the stone and polishing done in the factory. To be safe, I'd still recommend a sealer. In my case, I should have trusted my training and instincts and not installed such a light absorbent granite. I knew better but I thought I'd just be careful. It was such a pretty slab, with pale sage green medallions throughout and the price was fantastic. Thing is, there is no amount of "careful" that can prevent water constantly being splashed around the sink and that water generally contains soap and food. It can start being absorbed before you're even done filling the dishwasher. That will eventually find its way into the stone making it darker than the rest of the kitchen by comparison. It also stays wet longer because it immediately starts to absorb, leaving you to believe that is only water it is and will dry back to the original light color. The good thing about natural granite is you can usually get the stains out with a poultice but what a big, time-consuming chore it is and mess you have to live with if it's more than just a small area. Bottom line is I recommend this product over several others I've tried but any water still needs to be wiped away immediately even though it's sealed.

This product does what it supposed to do and seals the counters thoroughly. I was able to roll out enriched dough and laminate croissant dough without any grease stains on the white stone.When doing a small counter top it is easy. Clean up is quick, and maintaining a wet surface is no problem. Larger countertops are more of a challenge. Because it is water based it is very runny. Masking off walls with tape helped keep it from the walls, but use good tape or it can soak through and create tape removal issues. The biggest problem with large countertops is the final clean up. Because this is a resin it can leave streaks. You must use microfiber cloths to wipe up the excess after treatment. Leaving a thin layer behind is the biggest issue with large countertops, as they start curing so quickly it is impossible to get a second pass that's not sticky. The best thing I found was to have multiple cloths at the ready and work quickly.

Good Product

I purchased a new house with builder grade granite and noticed water absorbed quickly. After a lot of reading I decided to bite the bullet and invested in this product. I followed the directions and videos to a t in fact I kept it wet even longer than instructed, 25-30 minutes. A bottle treated a counter 25” wide and about 20’ long twice and I have some left over. It cleaned up easy although I will say I taped up everything I didn’t want it to come in contact with. I purchased a roll of resin paper and covered allowing it to dry for 12 hours and limited use for the next day although it was dry and clear that night. Sadly water still seeps into counters after two extended applications although not quite as fast.

Update: we sold the house I used this in after a little more than 2 years. The grout sealer was still going strong with no reapplication! Great stuffI just bought a brand new house - New Construction. The builder did not seal the grout because they say it should cure for 30 days (Total BS - 3-4 days is usually more than enough).I have worked with grout a lot over the years and consequently worked with a lot of grout sealer. This stuff really does seem to be bullet proof. Following the instructions I applied one coat. I went back to apply the second coat and it would not absorb any of the sealer - it had already sealed 100%.I checked with a company that seals grout and beside the crazy price of $2 a sq foot, they recommended reapplication every 6 months.With things like this they are a "time will tell" type product. But I am very confident this will last much longer than the standard product in the big box stores. It will certainly hold up longer than 6 months. The product claims it lasts 5 years. I will be happy if I get a year out of it and thrilled if I get 2 years.Laticrete is well known for it's products and this really seems to hold up to the name.If I remember in a year or two, I will try to post an update. But at this point I would highly recommend this if you need to seal grout.

Worked very well on my marble countertops.

Used this on white grout in our bathroom.Doesn’t work great, but definitely helps.We try very hard to avoid dirt, even water, on our bathroom grout- obviously never achieving that entirely.After about 8 months they’re greying again.But it does make cleaning the grout easier, just need to do it regularly.

Excellent sealer for our marble tiles and easy to work with, as well as not much of a smell during application.

Hay que mantener húmedo durante 15 minutos lo cual se vuelve casi imposible sin dar al menos 10 manos, lo que hace que el casi litro no rinda más allá de 3-4m2…..

I bought a marble table and it was getting etched with lemon juice and red wine. I decided to try this bullet proof sealer and not only did it hide the previous etched flaws, but it appears to have given it a nice protected shiny coat. At first it didn’t look like it was going to take as I already had a shiny coat on top, however, as that was getting etched, I wanted to try anyway. You do need to keep it wet and follow the directions very closely. I did two coats within a half an hour of each other and then let it set for 72 hours. I’m very pleased. I also tried it on my Marble Floor, I only did a few tiles in case it was slippery. It didn’t appear to give them any shine, which I was hoping it would, but it also didn’t appear to make them slippery, bonus.