Low-Modulus Flexibility: Provides exceptional flexibility and stress relief; maintains a secure seal even under significant strain High Movement Capability: Ideal for for high-rise and façade applications; accommodates joint movement up to +100% and -50% Multi-Surface Adhesion: Bonds to most construction materials without primer; suitable for dissimilar substrates Versatile Use Cases: Excellent for joints in concrete panel and wall systems, around window/door frames, reglets, and flashing, and EIFS systems (ASTM C-1382) Non-Sag, Elastomeric Formula: Stays in place for vertical and overhead applications; no slump during cure All-Weather Performance: Withstands UV exposure and harsh climates; proven in tough environments Jet Fuel and Chemical Resistant: Withstands diluted acids, alkalines, and jet fuel; suitable for demanding applications Paintable Surface: Tack free in 2-6 hours and fully cures in 7-10 days; paintable after full cure Application Temperature Range: Apply between 40° F and 100° F; for cold conditions, pre-condition product to approximately 70° F before use 2- and 3-hour UL Fire Rated Joint System Numbers: FF-S-0007, FF-S-0037, FW-S-0015, FW-S-0018, HW-S-0076, HW-S-0095, WW-S-0011 and WW-S-0060 Sikaflex 15 LM is a low-modulus, high-performance, 1-component, polyurethane-based, non-sag elastomeric sealant. Meets Federal Specification TT-S-00230C, Type II, Class A; ASTM C-920, Type S, Grade NS, Class 100/50, use T, NT, G, A, O, M; Federal Specification for silicones - TT-S-001543 A, Type non-sag. Tested in accordance with ASTM C-1382 for use in EIFS systems.