Everbuild Everflex115 GP building mastic is an oil based compound intended for general pointing and sealing of many joints in traditional forms of construction. The sealant is rapidly and simply applied by extrusion from a cartridge gun. The product has good adhesion to most clean, dry surfaces. BENEFITS- Overpaintable.- Adheres to most common surfaces.- Semi drying - remains permanently plastic beneath surface skin.- High solids formulation - excellent gap filling properties without shrinkage.- Good external weathering properties. AREAS FOR USE- Perimeter pointing internally and externally around doors and windows.- Adheres to concrete, brick, wood, metals and glass without the use of a primer. C3 cartridge size.