Home / Sealers & Topical Treatments / ConTec CS-640

Advanced Water-Repellent Protection for Concrete

ConTec CS-640 concrete sealer is a premium water-based emulsion of organomodified siloxanes and silanes designed to provide deep penetrating protection for concrete and masonry surfaces. Engineered to enhance durability and long-term performance, CS-640 delivers exceptional water repellency while helping maintain the appearance and integrity of concrete products.

Features & Benefits

  • Deep penetrating formula
  • Exceptional water repellency
  • Improves surface durability
  • Reduces efflorescence
  • Suitable for both dry and green concrete
  • Extends product lifespan and field performance

Applications

ConTec CS-640 is well-suited for a variety of concrete and masonry applications, including:

  • Concrete Masonry Units (CMU)
  • Pavers and hardscape products
  • Rooftile
  • Specialty cementitious products

Why Choose CS-640?

CS-640 is engineered for superior protection, which delivers deep-penetrating waterproofing performance that safeguards concrete from moisture intrusion while maintaining its natural finish. The advanced formulation enhances durability and reduces weather-related deterioration for longer-lasting, better-looking concrete surfaces.

ConTec CS-640

TECHNICAL INFORMATION

packaging

ConTec CS-640 is available in bulk quantities or packaged in 55 gallon (208 L) drums weighing 480 lbs (218 kg) and 265 gallon (1003 L) totes weighing 2360 lbs (1070 kg).

HANDLING & STORAGE

ConTec CS-640 can be stored over a wide range of temperatures but should not be allowed to freeze. Should CS-640 freeze, it will not thaw to a usable product. Provide adequate ventilation with use.

ADDITION RATES

ConTec CS-640 Application rates can vary, depending on surface, from 100 to 500 square feet per gallon. Typical roof tile application rates average 9 grams per square foot. Optimum coverage rates vary with geographic area and the texture and composition of the surface being sealed.Always consult your ICT technical representative for recommendations for your application

TYPICAL PROPERTIES

Specific Gravity at 77°F: 1.00 – 1.02
Viscosity at 77°F cps: 100 max
Weight per gallon: 8.35 – 8.4
Volatile matter (NVM(1)): ~50