Description

About Sika Thoroseal-581 White

Sika Thoroseal-581 White is a Portland cement-based coating developed to waterproof and protect concrete and masonry structures. This material acts as a heavy-duty sealant that fills pores and voids within the substrate, bonding effectively to become an integral part of the wall. Unlike surface paints, this coating provides a structural finish designed to resist water penetration while maintaining the durability of the underlying masonry. It is supplied as a powder that is mixed before application and is engineered for use on vertical surfaces in various construction environments.

Sika Thoroseal-581 White Technical Specifications

• Base Material: Portland Cement
• Color: White
• Packaging Weight: 50 lb
• Physical State: Powder
• Permeability: Water vapor permeable (breathable)
• Certifications: NSF/ANSI Standard 61 (Compliant for potable water contact)
• Density: Approx. 1.25 kg/l (wet mix)

Applications & Material Features of Sika Thoroseal-581 White

Sika Thoroseal-581 White is utilized by professionals for damp-proofing and waterproofing a variety of masonry substrates. It is suitable for both above-grade and below-grade applications, making it a standard choice for basement walls, foundations, and retaining walls. The material is compatible with concrete, brick, stone, and block surfaces. Due to its NSF/ANSI Standard 61 certification, it is also appropriate for use in potable water tanks and reservoirs. The coating features a breathable composition that allows moisture vapor to escape, preventing pressure buildup behind the material while still blocking liquid water ingress.