Miracle Sealants511 Porous Plus Penetrating Sealer Resists Stains Professional Durable Grade 1 Gallon

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

I have used the 511 Impregnator for about 17 years. This product applies equally as nicely and leaves a similar finish. The finish is invisible once it dries. I used on my Italian, porcelain tile that looks like travertine vein cut. It looks great. I used the 511 Seal and Enhance on my marble and granite. It leaves a beautiful, shiny finish. Some of it was applied to my travertine floors. It really makes them look polished. I applied 2 coats of both of these allowing a 2-3 hour interim dry time. I have not used my shower as of yet, bu the floors look fantastic. I would be careful about waiting too long to wipe the initial application away (3-10 minutes). A powdery white residue will develop.

I do a LOT of brick restoration work....stripping paint off (use Citristrip gang-it rocks!), restoring original brick, sealing the walls, etc.I have tried many, many, many things to prevent efflorescence (if you've got it-you know what this is), and this is by far the best product I have used. I will never use anything else. Do not let the price scare you-as advertised this stuff goes a ridiculously lonnnnnnnnnng way. Easy to apply-dries fast, works 100.0% primo.CONSUMER RATING: Just buy it!

I tested out with a small area on exterior slate tiles over the past winter. Its ability to repel water faded a bit. My guess is the product will last for 2 years and requires a new coat. I decided to apply in a larger area. Though I shook it a bit, but found out that the last 1/3 of the gallon jar became a large chunk. I purchased in Sept 2023, this is Oct 2024, "Chunk up" seems quite expected.

Put it on over a month ago. No stains and sealed. So far so good.Cleaned with pressure washer then once dry used a roller to apply. Didn't have a need to wipe off excess

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.

Worked just like they said it would. My brother recommended this to me ,he is a former granite/marble/ tile guy he had the same flooring in his house as I. This floor has been down over twenty years and I just rerouted the entire floor and put this sealant on. Used more than it called for but since it was never sealed before and in Florida weather I said what the heck. Before sealing I was needing to acid clean the floor every two months to get the dirt and grime out. I have a tile floor that's like sandstone very pourious

I purchased the product in May 2022 and used it last week. In the past I purchased this product from a local store, used it indoors and could hardly breath cause it has such a strong smell. So the product I purchased from Amazon was to apply on limestone outdoors. I did not have that strong smell and thought it was because I was outdoors. After application, it just did not feel right, so I called Amazon to complain and I was refunded. I had a little left of the product that I bought from the local store and tried it outdoors, the smell is as strong as in using it indoors and I still feel it in my throat 30mins after sealing. So I think the product from Amazon seller was diluted, which will explain why some buyers are not seeing the result they want. If you have never used the original, you will never know it’s been diluted. You also cannot blame Amazon, it’s the seller trying to pull a fast one. I have let Amazon know and they will investigate this seller