Rated 4.67 out of 5 based on 3 customer ratings
(3 customer reviews)

16 oz Sample: $12.88 (samples are not returnable)

1 Gallon: $69.88

1 Gallon Ultra Concentrate MAKES 5 GALLONS: $254.88

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.




An industrial-grade, water-based, silane/siloxane engineered to reduce water and moisture intrusion, protect concrete from deicing salts and chlorides, and resist staining from oil and fluids.


1 Gallon Coverage: Up to 125 sq. ft. (including both coats)

1 Gallon Concentrate Coverage: Up to 625 sq. ft. (including both coats)

(1 Gallon Concentrate mixes with 4 gallons of water to make 5 gallons)

Applications: Driveways/sidewalks, patios, pool decks, garages, chimneys

Substrates: Concrete, concrete blocks/cinderblocks, brick, pavers, exposed aggregate, stucco, stone, slate, sandstone


  • Feature: Water, salt, oil & stain repellent
  • Chemistry: Modified Silane/Siloxane
  • Color: Clear
  • Finish: Invisible
  • Category: Penetrating
  • Carrier: Water
  • Availability: Ready to Use or Ultra Concentrate: Makes 5 Gallons
  • Packaging: 1 Gallon, 1 Gallon Concentrate
  • Reconstitution Ratio: Ultra Concentrate: 1 part sealer : 4 parts water
  • Interior/Exterior: Interior/Exterior
  • Application Method: Sprayer, Roller
  • Application Temperature: 45 F – 90 F
  • Number of Coats: 2
  • Time Between Coats: 5 Minutes
  • Drying Time (dry to touch): 6 Hours
  • Drying time (full cure): 24 Hours
  • Time before/after rain: 48 Hours
  • New Concrete: Yes, at least 28 days after being poured
  • Storage/Shelf Life: 1 Year
  • Clean up: Soap/water
  • Paintable: No
  • VOC Content: 90 g/L

For complete Siloxa-Tek 8505 application, SDS Sheets, FAQ’s, testing and technical data visit

Additional information

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3 reviews for SILOXA-TEK 8505

  1. Rated 5 out of 5


    This is the best product on the market, never have I used a sealer that beads water and prevents staining from oils like this 8505 oil repellent! Even though it is pricey – it is worth every penny. The ultra concentrated version makes the price a little easier to swallow since there is a about a $20 discount per gallon.

  2. Rated 5 out of 5


    I was debating whether to go with the oil additive version-the 8505 or the other one-the 8500, but since i have cars coming in and out of my driveway frequently visiting I decided to use the 8505 where the cars park and the 8500 on the rest of the driveway. they are both clear and natural finishes and you couldn’t even tell where one product ended and the other began. I would have loved to use the 8505 on my whole driveway but it just wasn’t in my budget so using the two products was a good alternative. Company has great support and customer service!

  3. Rated 4 out of 5


    Used in my garage where my wife and I park our cars and no spalling or oil stains since this past winter, rated four stars instead of five because I cant comment as to longevity yet.

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