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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.

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