Concrete Solutions for architects, engineers and builders since 1974

StarSeal 309

STARSEAL 309 is a economical water base curing, sealing, hardening, dust proofing, and water repellent coating. StarSeal 309 forms a crystal clear low gloss coating that protects and seals new and existing concrete surfaces. StarSeal 309 features Vexcon’s breathable technology which allows moisture vapor to pass through rather than becoming trapped, preventing whitening, peeling and flaking.


  • Provides for complete development of concrete’s wear resistance and strength properties
  • Apply to damp surfaces without whitening or loss of adhesion
  • Meets ASTM C-309
  • Seals and hardens surface reducing clean-up and maintenance
  • Protects against staining, attack by alkali, oil, cleaners and common industrial chemicals
  • Prevents efflorescence, dusting and spalling
  • Vexcon breathable technology
  • Economical
  • Low odor


Gurad/Film Forming Sealers

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