50#SACK WHITE THOROSEAL
$75.00
Portland cement–based waterproofing mortar in white for concrete and masonry. Polymer-modified coating supplied for professional use on vertical and light horizontal surfaces. Available in standard colors and packaged for job-site distribution.
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Description
Product Overview Sika Thoroseal 581 White
Sika Thoroseal 581 White is a Portland cement–based waterproofing mortar designed for application on concrete and masonry substrates. Supplied as a white cementitious coating, this product is formulated for professional construction and repair projects.
Sika Thoroseal 581 White Technical Specifications
- Chemical Base: Portland cement, graded sand, and proprietary additives; polymer-modified with Thoroseal Acryl 60.
- Packaging: 50 lb (22.7 kg) polyethylene-lined bags and 50 lb pails for white and standard gray.
- Color: White (also available in standard gray and landscape/custom colors with minimum order requirements).
- Shelf Life: 1 year when properly stored in unopened containers.
- Density (Cured): 129 lbs/ft³ (2,080 kg/m³) (lab method).
- Compressive Strength: 7 days — 4,200 psi (29 MPa); 28 days — 6,030 psi (42 MPa).
- Flexural Strength: 7 days — 360 psi (2.5 MPa).
- Modulus of Elasticity: (in compression, 28 days): 2.72 x 10⁶ psi (1.87 x 10⁴ MPa).
- Abrasion Resistance: Passed 3,000 L sand (Fed. Spec. TT-P-141B).
- Impact Strength: No chipping (gardener impact tester) per Fed. Spec. TT-P-0035.
- Set Time: (at 70 °F / 21 °C, 50% RH): initial set ~10 minutes; final set ~90 minutes (lab method).
- Coverage (Typical): 225 ft² per 50 lb bag as a base coat at 1/16″” dry-film thickness; 450 ft² per 50 lb bag as a topcoat at 1/32″” dry-film thickness (may vary with substrate texture and porosity).
- Certifications: Certified to NSF/ANSI Standard 61 for potable water contact (white and gray products).
Applications & Material Features
Sika Thoroseal 581 White is verified for vertical and light-pedestrian horizontal surfaces in both interior and exterior environments. It is suitable for above- and below-grade installations. Common professional applications include:
- Waterproofing basements, retaining walls, and foundations.
- Bridges and tunnels (non-traffic bearing surfaces).
- Water cisterns.
- Flashing of rough openings.
- Alternative to mechanical finishing on architectural concrete.
Key Material Features:
- Cementitious composition with graded aggregate for body.
- Polymer modification for enhanced coating properties.
- Breathable formulation allows for interior moisture vapor transmission.
- Compatible with a wide range of architectural topcoats and textured finishes.
Additional information
| Weight | 50 lbs |
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What is the primary material composition of Sika Thoroseal 581 White?
It is Portland cement-based with graded sand and proprietary additives; the product is polymer-modified with Thoroseal Acryl 60.
In what packaging units is this product supplied?
The product is supplied in 50 lb polyethylene-lined bags and in 50 lb pails for white and standard gray.
What are the verified storage and shelf life details?
Shelf life is one year when stored in unopened containers in a clean, dry location protected from rain, dew, and humidity; bags should not be stacked more than two pallets high per storage guidance.
What color and variant options are available for this product?
Available in white and standard gray; landscape and custom colors are available with minimum order quantities as specified by the manufacturer.
Are there documented typical applications for this material?
Yes. Documented uses include waterproofing for concrete and masonry on vertical and light-pedestrian horizontal surfaces, above- and below-grade applications, basements, foundations, retaining walls, water cisterns, and certain bridge and tunnel surfaces.
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