Green Builder Products Inc.

Distributor of Green Construction Materials

Crystal Lok

Water-based concrete penetrating sealer

When Crystal Lok is applied to concrete, it’s pulled into the capillaries and pores and within 15 minutes begins the waterproofing, damp proofing, and hardening process.


  • Blocks water (fresh and salty) from rains, floods, storms, waves
  • Prevents freeze-thaw spalling


  • Seals against de-Ice chemicals
  • Prevents algae, mold, fungi infiltration & discoloration
  • Prevents chemical corrosion

Damp proofs

  • Allows structures to expel trapped water as vapor.


  • Improves surface abrasion by 65%
  • Increases concrete density and hardness
  • Prevents physical abrasion
  • Stops expansion cracking from temperature fluctuations

Raises pH – (11.3-11.5 same as new concrete)

  • Helps keep embedded steel fiber, mesh and rebar rust-free
  • Reduces re-rusting in aged concrete


  • Single application liquid
  • Apply to dry, damp, or wet surfaces (not into puddles or flowing water)
  • Apply with any method – brush, spray
    • Penetrates up to 3/4 inch converting to new C-S-H (Calcium Silicate Hydroxide – pure cement), filling pores, capillaries, voids & hairline cracks with CS
  • Can be top coated with concrete-specified coatings, mastics, adhesives
  • Water based
  • Non Hazardous
  • Solvent-free, odor-free, non-toxic and non-flammable
  • 0 VOC (zero Volatile Organic Content)
  • Blocks penetration of acids, caustics, petroleum products, mine wastes
  • Permanent – cannot erode; does not require subsequent re-application every few years
  • Can be shipped by any method – UC 2839.19.00.00 DOT Class 55 NMFC: 033880.2 d
  • Not UV-sensitive
  • Holds concrete at pH 11+, higher than oxidation levels for concrete and imbedded steel, therefore—
  • Passivates encountered structural steel within concrete mass
  • Accepts any normal maintenance after application – acids, polishing, grinding
  • Effective as a negative-side waterproofing against a hydrostatic head of over 115 ft/35 m
  • Reduces or eliminates efflorescence and leaching in concrete
  • Improves the bonding of cementitious toppings, coatings and paints
  • Ultra-violet stable