Concrete Solutions for architects, engineers and builders since 1974

Certi-Vex Envio Stain Blocker

CERTI-VEX ENVIO STAIN BLOCKER is manufactured from solvent-borne modified acrylic resins with selected pigments and fillers, to produce a cost effective coating that covers surface blemishes and stains such as water marks and graffiti.It is designed to provide excellent adhesion, weather-ability, and acceptance top coats to prevent bleeding. It may be applied to green concrete without peeling or loss of adhesion, and provides excellent resistance to UV light, molds or fungi and environmental chemicals. The product may be applied to exterior or interior surfaces, above or below grade.


  • Meets USEPA & OTC AIM VOC regulations
  • Blocks out surface blemishes and stains
  • Apply directly to fresh concrete (< 28 days old)
  • Excellent base coat for exterior masonry paints solvent and emulsion
  • Resistant to acids, alkalis and other environmental chemicals
  • Resistant to mold and fungus
  • Moisture retentive (aids curing of new concrete)
  • No primer required
  • Highly durable
  • Enhance appearance of topcoat, prevents reflection
  • Apply to temperatures as low as 20°F (-6° C)



Gurad/Film Forming Sealers

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