Product Data Sheet Edition: 01/2013 Version no: 0006 Sikaflex 1 a Overview: Sikaflex-1a is a premium-grade, high-performance, moisture-cured, one- component polyurethane-based, non-sag elastomeric sealant used in certain Sika Samafil roofing or waterproofing system flashing details. Typi- cal applications include wall, curb drain terminations, pipe pentrations and under certain metals. It can also be used as a pitch pocket sealant. Composition: See Material Safety Data Sheet for Composition. Sikaflex-la cures to a light gray or white color with a smooth texture. VOC Content: 40 g/L Features: Sikaflex-la bonds well to Sika Samafil PVC membranes and to common building materials. It is easy to apply and has excellent workability charac- teristics. Sikaflex-la is USDA-approved, NSF-approved for potable water contact, jet fuel resistant and has high elasticity curing to a tough, durable, flexible consistency with exceptional cut and tear resistance. It meets Federal Specification TT-S-0023C, Type II, Class A. It is paintable with water-, oil- and rubber-based paints. Sikaflex-la is VOC compliant in California and has excellent weatherability and resistance to degradation by ultraviolet light. Packaging: Sikaflex-la (in light gray) is packaged in 10.3 fluid oz (305 ml) disposable cartridges (24 per case). A cartridge covers approximately 12.4 linear ft (3.8 m) based on a 1/2 in (12.7 mm) bead. The actual coverage rate will vary depending on the size of the bead. A case weighs 25 lbs (11.3 kg). The shelf life is 12 months in an unopened cartridge. Sikaflex-la (in white) is packaged in 20 fluid oz (604 ml) uni-pac sausage seals (20 per case). A sausage covers approximately 24 linear ft (7.3 m) based on a 1/2 in (12.7 mm) bead. The actual coverage rate will vary de- pending on the size of the bead. A case weighs 45 lbs (20.4 kg). The shelf life is 12 months in an unopened cartridge. Installation: The recommended application temperature for S