Sika Thoroseal 581 Product Description

Sika Thoroseal 581 is a Portland cement-based coating for concrete and masonry surfaces, providing resistance to weathering, water penetration, and both positive and negative hydrostatic pressure. When polymer-modified with Sika Thoroseal® Acryl 60, Sika Thoroseal®-581 creates a highly durable, low-maintenance waterproof barrier.

Applications

• General applications

• Vertical and horizontal surfaces subjected to light pedestrian traffic

• Interior and exterior applications

• Above-grade and below-grade applications

• An alternative to mechanical finishing or rubbing of concrete surfaces

• Waterproofing basements and retaining walls

• Foundations

• Bridges and tunnels (traffic barrier surfaces)

• Water storage tanks

• Flashing and sealing rough openings in concrete or masonry

• Refer to the specific application sections for installations such as stucco, below-grade structures, water storage tanks, etc.

Substrates

• Cast-in-place and precast concrete

• Concrete blocks, bricks, and porous stone

Features / Advantages

• Waterproofing properties help protect building interiors against moisture and water damage

• Acts as an air barrier to help reduce air infiltration

• Resistant to both positive and negative hydrostatic pressure, making Sika Thoroseal®-581 suitable for interior and exterior below-grade applications and water-retaining structures

• Breathable coating allows internal moisture vapor to escape without damaging the coating

• Compatible with high-performance coatings and a wide variety of architectural coatings and surface finishes

• Conceals minor surface defects and imperfections in architectural concrete

• Available in ten standard colors and custom colors (subject to minimum order quantities)

• NSF/ANSI 61 certified for potable water applications

• Suitable for contact with drinking water