Low-VOC Solvent Based Water Repellent for Concrete & Masonry

EUCO-GUARD 350 is a deep penetrating siloxane sealer designed to protect concrete structures, decks, pavement and surfaces against the adverse effects of de-icing salts, moisture, weathering and freeze damage.  EUCO-GUARD 350 reacts chemically with the concrete to provide a highly effective chloride screen and water repellent surface. In addition to its ease of application, EUCO-GUARD 350 has the added versatility to be used on both new and old concrete surfaces.


Features & Benefits

  • Provides an efficient, continuous chloride barrier
  • Blocks pores and capillaries for outstanding water repellency
  • May be applied to new or old concrete
  • Complies with VOC standards in the OTC and LADCO states
  • Full protection in one treatment, but may be reapplied later at any time
  • Provides a low cost protection system over the life of a structure
  • Protects reinforcing steel against the corrosive effects of surface absorbed chlorides and moisture
  • Renders new concrete virtually free of surface scaling


  • Parking structures
  • Lane barriers & ramps
  • Bridges
  • Marine platforms
  • Auto/truck repair bays
  • Exterior concrete surfaces

Specifications / Compliances

  • Federal specification SS-W-110C
  • Complies with Federal AIM Rule VOC regulations and with VOC standards in the OTC and LADCO states


EUCO-GUARD 350 is packaged in 55 gal (208 L) drums and 5 gal (18.9 L) pails.