FASTIX EXTERIOR does not stick / does not stick as it used to.

FASTIX EXTERIOR is a sealant. Although it adheres well to many materials, its adhesion is relatively lower than that of other adhesives.

It is ideal for sealing openings, windows, sheet-metal work and sinks. It is recommended for use on glass, galvanised steel, zinc, cement, marble, wood, polycarbonate, brick, cladding and stone.

Check that the material you are trying to bond is included in the list of materials recommended for use with FASTIX EXTERIOR. Make sure that the surface you want to bond is dry and clean, free of dust, oils or grease.