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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

Discover the unparalleled efficiency of ARDEX S 1-K One-Gallon Waterproofing and Crack Isolation Membrane for your tiling projects. This exceptional, single-component formula is expertly crafted to provide a robust, flexible waterproof coating, making it an indispensable asset for protecting various interior building substrates from water exposure. Ideal for areas prone to moisture, such as bathrooms and showers, it ensures the longevity and aesthetic appeal of your tile installations.

The ARDEX S 1-K is renowned for its user-friendly application. Its convenient one-gallon size and 2-coat system can be effortlessly applied with a paint roller or brush, offering a smooth, consistent finish with minimal mess. Beyond its waterproofing capabilities, this product excels in crack isolation, adeptly managing cracks up to 1/8" (3 mm), thus safeguarding the structural integrity of your tiles.


  • One-Gallon Convenience: Ample quantity for comprehensive coverage.
  • Effortless Application: Suitable for paint roller or brush use.
  • Interior Waterproofing: Ideal for high-moisture areas like bathrooms.
  • Crack Isolation: Effectively handles up to 1/8" (3 mm) cracks.
  • Versatile Bonding: Adheres to a broad range of substrates.
  • Flexible, Durable Coating: Ensures long-lasting protection.
  • Single-Component Formula: Streamlines the installation process.


  • 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.


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