EVERFLEX 115 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.


  • Overpaintable.
  • Adheres to most common surfaces.
  • Semi drying – remains permanently elastic beneath surface skin.
  • High solids formulation – excellent gap filling properties without shrinkage.
  • Good external weathering properties.
  • Do not use in areas likely to be exposed to solvents, petrols or oils.
  • Do not apply to fresh concrete or mortar. Allow 28 days to reduce surface alkalinity.
  • Do not use in conjunction with bitumen or asphalt, Use WEATHER MATE SEALANT
  • May stain marble, slate or certain sensitive natural stones.
  • Do not use on Upvc, polycarbonate or acrylic sheet. Use SILICONE 450.
  • Do not use in areas where movement exceeds +/- 7.5%
  • The product takes 24 –48 hours to skin, but 2-4 weeks to through cure.