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

ARDEX S 1-K Waterproofing & Crack Isolation Membrane – 1 Gallon The ARDEX S 1-K Waterproofing and Crack Isolation Membrane – 1 Gallon delivers high-performance protection against moisture and substrate movement in interior wet areas. Ideal for tile professionals, it simplifies waterproofing for showers, bathrooms, and other demanding applications. Features One-Gallon Convenience: Covers up to 100 sq. ft. per coat, perfect for mid-sized jobs without the waste of larger containers. Single-Component Application: No mixing required—ready to use right from the bucket, saving time and labor. Effective Waterproofing Barrier: Meets ANSI A118.10 for water exposure in showers, tub surrounds, and other wet zones. Crack Isolation Protection: Handles in-plane cracks up to 1/8" (3 mm), maintaining a strong bond under stress. Easy Application: Apply with a brush or roller for even, consistent coverage on vertical or horizontal surfaces. Flexible & Durable Finish: Creates a tough yet elastic membrane that resists peeling, blistering, and degradation. Broad Substrate Compatibility: Bonds to concrete, cement backer board, masonry, and more. Low VOC & Indoor Safe: Safe for enclosed environments and compliant with green building standards. Quick Drying Time: Allows for tiling in as little as 1–2 hours after application depending on conditions. Trusted Standards: Complies with SystemOne™, ANSI A118.10, ANSI A118.12, and IAPMO listed. Standards SystemOne™ Meets or exceeds ANSI A118.10 Meets or exceeds ANSI A118.12 IAPMO Installation 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. Performance 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 MethodsPackaging: 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 monthsWarranty: ARDEX L.P. Standard Limited Warranty applies.