Sealer/Topical Treatment

ConTec CS-677WS wet-side sealer has increased acrylic polymer vs our CS-670WS. This results in a higher gloss coating. It is designed to give all concrete masonry units tough, water-resistant properties. ConTec CS-677WS is proven effective on porous concrete masonry surfaces. It can be applied in the field or on the dry or wet side of the production line.

Features & Benefits

  • More gloss than our CS-670WS
  • Deep penetrating
  • Non-yellowing
  • May be applied wet-side
  • Fast drying – reduces blocking
  • Improves durability and chemical resistance
  • Reduces efflorescence on concrete products
  • Extremely blush resistant


ConTec CS-677WS should be applied with a airless spray system. There is no need to over apply. Only one coat is required. Apply only when substrate and ambient temperatures are above 55°F. Maintain temp for 3 hours or until completely dry.

ConTec CS-677WS



ConTec CS-677WS is available in bulk quantities or packaged in 55 gallon (208 L) drums weighing 480 lb (218 kg) and 275 gallon (1,003 L) totes weighing 2,400 lb (1,089 kg).


ConTec CS-677WS can be stored over a wide range of temperatures but should not be allowed to freeze. Should ConTec CS-677WS freeze, it will not thaw to a usable product. Provide adequate ventilation with use.


For wet-side apply enough to satisfy surface demand. Application rates can vary, depending on surface, from 100 to 420 square feet per gallon. Optimum coverage rates vary per application and geographic area. Always consult your ICT technical representative for recommendations for your application.


Specific Gravity at 77°F: 1.05 – 1.06
Viscosity at 77°F cps: <400
Weight per gallon: 8.65 – 8.75