4.46 out of 5 based on 13 customer ratings
(13 customer reviews)

1 Gallon: $59.88

1 Gallon Ultra Concentrate MAKES 5 GALLONS: $219.88

The industries most innovative concrete sealer formulas just got better! 1 Gallon Ultra Concentrate makes 5 gallons of sealer, equating to 80% less packaging, 50% less transportation cost and 80% less empty container waste making the Ghostshield formulas extremely sustainable.


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Product Description

Siloxa-Tek 8500 Recommended For Sealing: Architectural concrete, concrete block, splitface block, pavers, stucco, porous and dense brick, clay tile, exposed aggregate concrete, sandstone, and slate; Driveways and Sidewalks.

Color: White Opaque (dries clear), natural finish

VOC’s: 90 g/L

Coverage :

1 Gallon: Up to 250 square feet

1 Gallon Concentrate: Up to 1250 square feet

Finish Characteristics: Siloxa-Tek 8500 does not change overall appearance of the substrate. Water will bead when sealing is complete.

Application Temperature: 45 degrees – 95 degrees

Cure Schedule: Allow material to dry for 24 hours to achieve maximum benefits

Primer: None required.

Topcoat: 2 Coats are recommended.


  • Reactive, Penetrating, Industrial Grade Formula.
  • Impregnates and creates a hydrophobic surface environment that reduces water and surface absorption.
  • Department of Transportation approved.
  • Prevention from freeze-thaw attack and ASR by preventing the ingress of water.
  • Prevents further damage to reinforced concrete by limiting the substrate water content, chloride and other aggressive salts.
  • Provides increased protection as a hydrophobic barrier to prevent future penetration of water and soluble aggressive agents through a crack.
  • Provides protection from spalling and pitting as a result of aggressive salts and chlorides.
  • Water Will Bead: beading effect will increase over time.
  • Ideal for driveways, sidewalks, roof tiles, concrete cinderblocks, exposed aggregate, stone and masonry surfaces.

For complete Siloxa-Tek 8500 descriptions, MSDS Sheets, FAQ’s, testing and technical data visit

13 reviews for SILOXA-TEK 8500

  1. 4 out of 5


    I applied this to the stone veneer frontage on my home. I applied this with a large paint brush and put on 2 coats. It was easy to apply, it looks like a white milky substance but dries on clear. Seems to be working and I hope it lasts, it’s has only been around 3 months since I applied it though.

  2. 4 out of 5


    Used for waterproofing block, seems to work good and easy to apply. Would recommend to other people

  3. 4 out of 5


    Used the Silatek and then used this product to prevent spalling on my driveway in the wintertime. Easy application process, but took a lot longer than I expected since there is a few days wait time between using each product. Applied them both a few months ago and the combination seems to be working well.

  4. 5 out of 5


    I have a brick & mortar chimney that was leaking. When heavy rain would fall against the chimney, the water would seep through the mortar and leak into the attic. I sprayed 2 coats (the whole gallon) with a garden sprayer on the chimney portion above the roof and no more leaks. I plan to repeat this each spring.

  5. 5 out of 5


    Spent a lot of time researching this product, I needed to seal my driveway but I live in a 55 plus community and the association does not let you apply anything to your driveway that changes the color or the look. The main reason for me wanting to seal it was the leaf staining I always experience as well as excessive mold and mildew. because of this I end up getting my driveway pressure washed every 6 months and it doesn’t last. The company sent me a free sample I tried it on the side of my house, after it dried you could not tell it was there so i purchased enough for my driveway, applied two coats and I haven’t had to pressure wash my driveway in almost 2 years. Excellent excellent stuff I would recommend it to anyone, in fact both of my neighbors did theirs as well and we are all happy.

  6. 4 out of 5


    This stuff is great. Very easy and fast to apply. 2 coats were necessary. The biggest unknown is it’s durability. Time will tell.

  7. 3 out of 5


    Just tried this product for the first time, I am please with the performance so far (9 moths) but it’s too early to really evaluate longevity.

  8. 5 out of 5


    Product was delivered quickly. Intended use was on architectural concrete masonry block foundation having an old sculptured surface look. I used a garden pump sprayer and 4 inch brush. Blocks initially absorbed sealer very readily with a flood coat Applied the second coat after about an half an hour and blocks did not absorb as much. Performance has been tested since it was a wet season. Masonry appearance did not change. Exceptional stuff

  9. 5 out of 5


    I looked at other reviews of products to seal concrete pool pavers and saw good ratings on this one. The last time I tried to have my pool pavers sealed it was a mess as the contractor tried to apply something with a roller. This time I did it myself. This stuff is great. I used a 3 gallon Echo hand sprayer and applied two even coats on the pavers after pressure washing the pavers. The product looked milky white going on, but dried clear. I would recommend this to anyone needing to seal concrete pavers.

  10. 4 out of 5


    This is my first time using this product. It brushes on nice and soaks into the mortar. 2 coats dried fairly quickly. Used this after tuck pointing the chimney and seems to work fine. Easy clean-up.

  11. 5 out of 5


    I ordered 20 gallons of this product and was able to apply 2 coats to a 3000 sq. ft. driveway using an airless hudson spray gun. The product went on quick, smooth, and even. After curing for 5 days I tested the product and water beaded on the entire surface as advertised, the appearance was clear and natural just what the customer wanted. My customer was very happy with the results, and so was I as their contractor. It shipped to my front door in 4 days. Can’t beat that for service.

  12. 5 out of 5


    Installed a new driveway a couple of years ago and noticed the top was starting to spall. I decided to try this product cause of the warranty and I have to say it does exactly what it claims. It stops the water from carrying the salt into the driveway and it is holding up good. I have not experienced any additional spalling, It has been about a year so time will tell but so far so good (i wished i did it sooner).

  13. 5 out of 5


    Have used this product in the past to seal the exterior of a chimney that comes through the ceiling into our sun room. Water was leaching out of the chimney face inside the sun room. Application has lasted, Just resealed again for extra protection, water is no longer entering the chimney face as it use too. Suggest using an airless sprayer with two coats 30 minutes apart. Pump up sprayers use too much product and don’t cover as adequately. This product does a good job and is not very expensive ($69) with free shipping.

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