Description USES SikaProof® A 12 is recommended for use by professionals and is applied for: Damp-proofing, waterproofing, and protecting basements and other below-ground concrete structures. Suitable for: Precast reinforced concrete structures Cast-in-place reinforced concrete structures Existing reinforced concrete structures FEATURES Dual bond: Offers a permanent mechanical and chemical bond with the concrete. Pre and post-application: Can be used in both applications. Sealing options: Joints can be sealed using either thermal jointing or cold-applied tapes. No lateral water movement between concrete and the membrane. Radon barrier: Effective in preventing radon diffusion. Easy and quick installation. High flexibility and excellent crack-bridging properties. Watertightness: Tested and proven to meet rigorous standards. Resistance to harsh conditions like natural groundwater and soil. Temporary resistance to weathering and UV exposure. Compatible with other Sika® waterproofing and joint sealing products. SUSTAINABILITY Environmental Product Declaration (EPD) verified by BRE Global according to EN 15804. Contributes to satisfying LEED® v4 credits for Materials and Resources, including building product disclosure and optimization. CERTIFICATES AND TEST REPORTS CE marking and declaration of performance according to EN 13967:2012 for waterproofing flexible sheets. Multiple watertightness tests and radon diffusion coefficient report. PRODUCT INFORMATION Composition: Flexible Polyolefin (FPO) membrane layer with a cement-modified polymer hybrid layer. Packaging: Rolls available in 1.00 m or 2.00 m widths, with a length of 25 m per roll. Colour: Light yellow top layer and grey bottom layer. Shelf Life: 24 months from production. Storage: Store in original, sealed packaging in dry conditions between 5 °C and 30 °C. Keep rolls in a horizontal position and avoid stacking pallets. TECHNICAL INFORMATION Impact Resistance: ≥ 400 mm on hard or soft support. Tensile Strength: ≥ 750 N/50mm in both longitudinal and transversal directions. Reaction to Fire: Class E (EN 13501-1). Watertightness: Passes tests at 60 kPa for 24 hours. Durability: Passes tests for watertightness after aging in high temperatures and chemicals. Elongation: ≥ 1100% in both longitudinal and transversal directions. Service Temperature Range: -10 °C to 35 °C. APPLICATION INFORMATION Ambient Temperature: Maximum 45 °C, Minimum 5 °C. Substrate Temperature: Maximum 60 °C, Minimum 5 °C. SYSTEM INFORMATION For the pre-applied system, the following products are used: SikaProof® A 12 sheet membrane SikaProof® Tape A N for detailing and internal jointing SikaProof® Sandwich Tape For the post-applied system, the following products are used: SikaProof® A 12 sheet membrane SikaProof® Adhesive-03 AE SikaProof® ExTape-100
