Ghostshield Siloxa-Tek 8505 Concrete Water and Oil Repellent- Concentrate

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Siloxa-Tek 8505 Concentrate is an advanced, high performance, industrial strength water based concrete/masonry water and oil repellent solution designed to reduce water and moisture intrusion. This unique formula incorporates leading molecular nanotechnology; putting an end to water, oils, fluids and moisture migration through any porous cementitious substrate. Siloxa-Tek 8505 Concentrate is a uniquely transparent, blended formula with added enzymes and surfactants that aide in accelerating a penetrating disbursement. It provides a hydrophobic barrier beneath the surface and seals out moisture while remaining highly vapor permeable and chemically bonding with the substrate. The treated surfaces will show no change in visual appearance from application and the surface will not chip, flake, delaminate or breakdown with UV light exposure.


  • Water based concrete/masonry water and oil repellent Concentrate
  • For concrete blocks, concrete cinderblocks, split-face block, driveways, sidewalks, parking garages, roof tiles and parking lots, stucco, brick, clay tile, slate, sandstone, pavers, exposed aggregate concrete, natural and artificial stone
  • Freeze-thaw/de-icing salt resistant
  • Resists oil, fluids, and staining
  • Protection against micro-organism growth; Reduces dirt pick-up
  • The treated surface does not become glossy
  • Prevents water intrusion
  • UV Resistant; Low VOCs
  • Reconstitute 4 parts water to 1 part Siloxa-Tek 8505 Concentrate; Coverage 1250 sq ft per coat, 2 coats required
  • Note: New Concrete must be cured 28 days


Manufacturer Part Number8505C
Sub BrandGhostshield
ApplicationTemperature Limits 45 to 90 degrees F
BaseWater Based
ColorDries Clear
Compatible ToolsLow Pressure, High Volume Pump Sprayer, Brush or Roller
Coverage - Square Feet1250
Package Quantity1
Recommended Use2 Coats Wet-on-Wet . Time between Coats 5 Minutes
StorageTwelve months in an unopened container when stored between 50-80 degrees F
V.O.C90 g/L
Warranty100 Year
Ships to HI/AKNo