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Siloxa-Tek 8505 Concrete Sealer



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.

SKU: RMC-st8505 Categories: ,
Product Description

Siloxa-Tek 8505 is the most innovative product ever formulated. A proprietary blend of silane/siloxanes and a proprietary stain repellent additive, this clear penetrating sealer not only prevents staining, oil penetration, deicing salt and freeze-thaw damage, but its hydrophobic nature resists moisture intrusion and vapor transmission. This is the go to choice to seal any concrete, brick, or masonry based substrate especially driveways, garages and patios.


  • 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
Weight 4.5 kg
Dimensions 8 x 8 x 8 cm

16 oz Sample, Gallon, Gallon Ultra Concentrate