MasterSeal 581: A waterproof cement-based coating for concrete and masonry
Formerly: Thoroseal Std Gray
How does MasterSeal 581 work?
MasterSeal 581 is a portland cement-based coating for concrete and masonry that resists both positive and negative hydrostatic pressure. Polymer-modified with MasterEmaco A 660, MasterSeal 581 creates a low maintenance and highly durable waterproof barrier.
Recommended uses:
• Vertical and light-pedestrian horizontal surfaces
• Interior and exterior
• Above and below grade
• Alternative to mechanical finishing or rubbing of concrete
• Waterproofing basement and retaining walls
• Foundations
• Bridges and tunnels (non- traffic barring surface)
• Water cisterns
What are the unique features of MasterSeal 581?
• Waterproof to help protect building interiors from dampness and moisture damage
• Breathable, allowing interior moisture to escape without damaging coating
What are the benefits of MasterSeal 581?
• Resistant to both positive and negative hydrostatic pressure, making MasterSeal 581 suitable for use below grade interior and exterior and in water treatment construction
• Compatible with high-performance coatings, including a wide range of architectural coatings and textured finishes
• Hides minor surface defects and blemishes in architectural concrete
