511 Porous Plus Sealer

2/2022: my shower and bathroom are still well sealed. I still haven't gotten around to the kitchen grout yet but I will definitely be using this product. The water still beads up on the bathroom grouts. 2019: I bought a pint to use for my shower tile, floor in the bathroom, and my kitchen backsplash and window sills. I finally got around to the shower yesterday. I used a foam craft brush to apply to sealant. I don't recommend that form of application because it caused a lot of foaming. However, since I didn't have anything else to use I continued with it. I applied the sealant as per the directions. Let it sit about 3 - 5 minutes and wiped it off the tiles. I only needed to seal the grout as the tiles didn't need to be sealed. After I sealed the grout in the walls I sealed the floor grout. I have a pebbled floor and again, just needed to seal the grout. After I completed the floor and wiped up the excess I waited about 2 hours and repeated the process. The smell didn't bother me until I sat in the living room after completing the task. I got a sore throat and my nose became plugged. I closed the bathroom door and lit a candle in the living room. That took away the odor. This morning I couldn't smell it at all. I dripped a little water on the shower floor and wall and it beaded up perfectly. I had to order a quart more so I can do the remaining grout areas. As soon as it arrives I'll finish the bathroom floor, kitchen backsplash and window sills. Ok, it's been five days since I sealed my shower and I STRONGLY RECOMMEND TO WEAR A MASK. I have had a sore throat and nasal passages since about 6 hours after using the product. Now, that's completely my fault because I read the directions and they clearly say to wear a mask and open windows and doors and use the fan if you have one. I sealed the bathroom floor grout yesterday. I really like how the water beads up now! Next will be the kitchen grout! I highly recommend this product. Other than needing a face mask and opening windows and turning on the fan, it's a wonderful product.

This is a great product to seal, waterproof, and protect natural stone. Goes on easy with a roller.

Good product although expensive

it does what it says

I hate to give 5 stars to something so expensive, but this stuff really works, and a little goes a long way. I needed to seal some very porous sandstone (6 tons of flagstone) and figured this wouldn't go nearly as far as it did. It doesn't change the appearance at all, except that now water beads on the surface. I was not able to give a second coat, which the instructions recommend. The first coat sealed so well that I couldn't get it to absorb any more fluid. I applied using a mini-roller, with a brush for really irregular places. This stuff has a VERY strong smell. Inside, I'd definitely recommend ventilation. You know how everything is labeled "causes cancer in California"? Well this stuff probably causes cancer even in Wyoming or Texas. It sure seals rock, though.