MasterSeal 581 - formerly Thoroseal

Cement based waterproofing for concrete. Mixed with MasterSeal A660 (1-1/2 quarts A660 with 4-1/2 quarts water per bag) and diluted with clean, potable water to produce a cementitious coating that is used to seal, waterproof and protect concrete and masonry substrates. Can be used on interior or exterior, above or below grade applications.

Benefits: 

• Waterproof to help protect building interiors from dampness and moisture damage
• Resistant to both positive and negative hydrostatic pressure, making MasterSeal 581 suitable for use below grade interior and exterior and in water treatment construction
• Breathable, allowing interior moisture to escape without damaging coating
• Compatible with high-performance coatings, including a wide range of architectural coatings and textured finishes
• Hides minor surface defects and blemishes in architectural concrete
• Certified to the NSF/ANSI Standard 61 for potable water contact

Applications:

• Vertical surfaces
• Interior and exterior
• Above and below grade
• Waterproofing basement and retaining walls
• Foundations

Limitations: This product is not color uniform, adequately ventilate for proper curing in enclosed areas; not intended to be used as a wearing surface; protect surfaces not being coated; metal, glass and wood.