Sikaflex-1A 20 Oz. 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, M; Federal Specification for silicones - TT-S-001543 A, Type non-sag. Tested in accordance with ASTM C-1382 for use in EIFS systems. -Excellent for moving joints in vertical applications. -Suitable for use between similar as well as dissimilar materials. -Typical applications include joints in concrete panel and wall systems, around window and door frames, reglets, flashing, common ROOFING detail applications, etc. -Exceptional sealant choice for high-rise and facade applications where high movement capability is required. -An effective sealant for use in Exterior Insulation Finish Systems (EIFS).