Surface preparation
The surfaces to be bonded should be clean, dry and free from any contamination. It may be necessary to mechanically abrade
the surfaces to be bonded in order to obtain the bond strength required. Each surface should be coated with the catalysed
bonding paste and held together until the adhesive has hardened.
Application
Crestafix 90-80PA is supplied pre-accelerated, requiring only the addition of catalyst to start the curing reaction. The
recommended catalyst is a medium reactivity MEKP catalyst, which should be added at 2% v/w into the bonding paste. The
catalyst should be thoroughly incorporated into the material with a low shear mechanical stirrer where possible, taking care to
keep air entrapment to a minimum. Alternatively, the bonding paste can be applied with a dispensing unit.
The use of additional pigments or fillers is not recommended as they can affect the performance of the adhesive.
Coverage
As a rough guide, 4.0Kg (9 lbs) of bonding paste will cover one square metre to a depth of approximately 3mm (0.12 inch).
