As with any epoxy, for best adhesion roughen any smooth surfaces to provide texture for the adhesive to key into. G/5 does not require clamping pressure as long as contact between parts is maintained during cure. If using clamps, it is best to use minimal clamp pressure to avoid excessive squeeze out resulting in a glue starved joint. The joint will be ready for light service after 15 minutes and cured to near full strength after four hours at room temperature. It will continue to gain strength and toughness with additional cure time. Cured G/5 can tolerate getting wet but it is not intended for items that are continuously damp or wet. It will work well on exterior applications as long as long-term wet/damp conditions are avoided.
Fast-curing two-part epoxy adhesive – WEST SYSTEM G/5 Five-Minute Adhesive is a convenient epoxy resin and hardener system for quick repairs and general bonding. The simple 1:1 mix ratio requires no pumps and is ideal for fast spot applications.
Bonds a wide range of materials – Adheres to wood, ceramic, metal, fiberglass, glass, leather, stone, plaster, cork, paper, and some plastics, making it useful for household repairs and temporary bonding tasks.
3–5 minute working time for quick fixes – This fast-curing epoxy provides a short working window before setting, allowing small repairs or positioning parts quickly while standard WEST SYSTEM Epoxy bonds cure.
Balanced viscosity for penetration and gap filling – The adhesive penetrates porous materials while remaining thick enough to bridge small gaps when bonding broken parts or irregular surfaces.
Best suited for dry, low-load applications – G/5 can be modified with WEST SYSTEM fillers, additives, and pigments, but it’s not as waterproof as 105 Resin-based or G/flex epoxies and is not recommended for high-load or moisture-exposed bonds.