Sika Thoroseal 581 50 Lb. Gray Masonry Waterproofer

Sika Thoroseal-581 is a Portland cement-based coating for concrete and masonry. Resists both air infiltration and positive as well as negative hydrostatic pressure. Polymer-modified with Sika Thoroseal Acryl 60, Sika Thoroseal-581 creates a low maintenance and highly durable waterproof barrier.

• Waterproof to help protect building interiors from dampness and moisture damage
• Air barrier reduces air infiltration
• Resistant to both positive and negative hydrostatic pressure
• Hides minor surface defects and blemishes in architectural concrete
• Breathable, allowing interior moisture to escape without damaging the coating