Weather Worker™ Water Repellant 40% J29

Chemicals | Liquids | Water Repellents

Casica | Dayton

Weather Worker™ 40% J29 is a proprietary 40% silane that penetrates into concrete or masonry and provides long term weatherproofing protection. Weather Worker™ 40% J29 is a single component product that is ready to use and typically requires only one application.

The silane molecule can penetrate deeper into the substrate than conventional sealers and even deeper than a typical siloxane sealer. Once the silane molecule penetrates the surface it chemically reacts with, and bonds to, the concrete or masonry substrate. As a result of the strong chemical bond, silane waterproof protection will last many times longer than conventional coatings.

Weather Worker 40% J29 will not darken the surface or leave a visible surface film. It is ideal for aesthetic/architectural surfaces.



Suitable for Commercial and Residential Applications




V.O.C. Content: <600 g/L

Hazardous material shipping restrictions apply. You may be contacted by Customer Service if an alternate shipping method is required.
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69138 5 gallon pail Call for price $120.08
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69137 55 gallon drum Call for price $116.44
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  • Small silane molecurles result in deep penetration
  • Passes the N.C.H.R.P. Report 244
  • Will not change the traction or skid resistance of a surface
  • No color change/will not darken surface
  • Strong chemical bond to the substrate
  • Can be applied down to 32°F (0°C)
  • Dries quickly, can be reopened to traffic within one hour
  • Improves adhesion for solvent based paints

Weather Worker 40% J29 provides outstanding long term weatherproof protection for all types of concrete and masonry surfaces. In independent testing done according to the N.C.H.R.P. Report 244 (for The State Highway Departments and The Federal Highway Administration), Weather Worker 40% J29 passed not only the water absorption phase (Series II), but also the accelerated weather phase (Series IV). During this test, Weather Worker 40% J29 reduced chloride ion intrusion into concrete by over 90%. This type of protection will dramatically increase the life expectancy of concrete or masonry. Weather Worker 40% J29 dries quickly, allowing traffic to resume quickly. Weather Worker can be applied in cold temperature, down to 32°F (0°C).

Weather Worker™ 40% J29 Protects All Types of Structures:

  • (New and Old)
  • Cast-In-Place and Precast Concrete
  • Exposed Aggregate
  • Mortar
  • Stucco

Weather Worker™ 40% J29 Prevents or Inhibits:

  • Moisture Penetration
  • Attack by Deicing Salts and Chloride Ions
  • Reinforcing Steel and Precast Anchor Corrosion,
  • Mildew and Leaching
  • Attack by Airborne Industrial Chemicals
  • Spalling Caused by Freeze-Thaw Cycles
  • Efflorescence
  • Surface Scaling
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