Concrete Solutions for architects, engineers and builders since 1974

Certi-Vex AC 309

CERTI-VEX AC 309 is a low VOC fast drying curing, sealing, hardening and dust proofing clear coating that provides weather and chemical resistance to a wide variety of concrete surfaces. The product is ideal for use on new or existing exterior and interior above and  below grade architectural concrete where a durable, slip resistant and low gloss appearance is desired.

Certi-Vex AC 309 features Vexcon’s breathable technology which allows moisture vapor to pass through rather than becoming trapped, preventing whitening, peeling and flaking.



  • Non-Yellowing. Surface remains clear
  • Fast drying
  • Provides for complete development of concrete’s wear resistance and strength properties
  • Apply to damp surfaces without whitening or loss of adhesion
  • Seals and hardens surface reducing clean up and maintenance
  • Can be applied at temperatures as low as 20°F/-6°C
  • Economical
  • Protects against rain, sun, freezing temperatures, alkali and common industrial chemicals, oil, grease, de-icing salts, cleaners, airborne soot, dust and other pollutants
  • Prevents efflorescence, dusting and spalling
  • Vexcon breathable technology
  • Surfaces look newer and brighter
  • Re-coatable


Gurad/Film Forming Sealers

Penetrating Sealer and Concrete Curing in one easy-to-use product.