CHEM-CALK GPS1 - Limestone
Chem-Calk GPS1 is a one-component, polyurethane, non-sag sealant specifically formulated to fulfill general sealing installations while exhibiting excellent dynamic movement capability.
Chem-Calk GPS1 meets ASTM C-920, Type S, Grade NS, Class 25, Use NT; US. Federal Specification TT-S-00230C, Type II, Class A.
Suggested applications are sealing roofing components, such as flashing, soffit/fascia, and termination bar and general exterior sealing of dissimilar building materials.