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Save 10% on all New Products this month- Code July-24
Save 10% on all New Products this month- Code July-24

ARDEX S 1-K™ One-Component Waterproofing and Crack Isolation Membrane

SKU 37317
by Ardex
Original price $49.72 - Original price $49.72
Original price
$49.72 - $49.72
Current price $49.72

Experience Superior Crack Isolation with ARDEX S 1-K Membrane

Elevate your tiling projects with the cutting-edge ARDEX S 1-K Waterproofing and Crack Isolation Membrane, designed to deliver unparalleled protection in moisture-prone interior spaces.


  • Single-Component System: Simplifies the application process for enhanced efficiency.
  • Effective Waterproofing: Ideal for protecting interior substrates in bathrooms, showers, and other moisture-prone areas.
  • Crack Isolation Capability: Manages cracks up to 1/8 inch (3 mm) to maintain tile integrity.
  • Versatile Application: Can be applied with a paint roller or brush for a smooth, even finish.
  • Flexible and Durable: Provides a long-lasting, robust coating to withstand various conditions.
  • Convenient One-Gallon Size: Offers ample coverage for extensive areas.
  • Multi-Substrate Compatibility: Adheres effectively to a wide range of building materials.


  • SystemOne™
  • Meets or exceeds ANSI A118.10
  • Meets or exceeds ANSI A118.12


Mixing Ratio: Single-component mix. Do not dilute or mix with additives.

Approx. Coverage:
56.75 sq. ft. (5.27 sq. m) per 1 gal. (3.78 L) unit, 2 coats over drywall *
Coverage will vary with substrate surface profile, porosity and texture.


Working Time: Unlimited. Seal unused portion to prevent product from drying out.
Drying Time: First coat: 1 – 2 hours Second coat: 12 – 16 hours

Flood Test: The final coat must be fully cured (approximately 12 – 24 hours, depending on site conditions).
VOC: < 1 g/L, calculated SCAQMD Methods
Packaging: 3.5 gal. (13 L) pail; 1 gal. (3.78 L) pail, 1 gal. units sold in cartons of four (4).
Storage: Store in a cool, dry area. Do not expose container to sun. Keep from freezing.
Shelf Life: 12 months
Warranty: ARDEX L.P. Standard Limited Warranty applies.

More Details

ARDEX S 1-K One-Gallon Waterproofing and Crack Isolation Membrane presents a revolutionary solution for ensuring the longevity and integrity of interior tiling projects. This innovative, single-component formula is designed to create a robust, flexible waterproof coating, making it an essential component for any project in moisture-prone areas like bathrooms and showers. Not only does it provide superior waterproofing capabilities, but it also excels in crack isolation, effectively managing up to 1/8 inch (3 mm) cracks. This feature is particularly important in safeguarding the structural integrity of your tile installations against potential damage. The convenience of its one-gallon size and the ease of application, whether using a paint roller or brush, makes ARDEX S 1-K a preferred choice among professionals. Its ability to bond with a broad range of substrates adds to its versatility, while the flexibility and durability of the coating ensure that your tile installations remain protected and visually appealing for years to come.

What's Included

ARDEX Americas is a leading provider of innovative building systems. We develop, manufacture, and distribute high-performance specialty building products, including flooring solutions, concrete repair, self-leveling underlayment, moisture control systems, tile adhesives, grouting systems, screeds, surface preparation, waterproofing solutions, and decorative concrete. As a family-owned company, ARDEX prioritizes local customer interaction, ensuring jobs are done right the first time to specification and on schedule while minimizing risk and costly callbacks. Our commitment to excellence is backed by industry-unique warranty systems covering products and labor costs.

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