Properly maintaining aluminium hardware

Recommended maintenance schedule:

- Every 3 months: clean hinges, lubricate latches and rollers. - Every 6 months: retighten fixing screws, check for play. - Every 12 months: check rubber gaskets; replace if brittle.

Use silicone-based lubricant instead of mineral oil to avoid dust buildup.

If you hear unusual noises or the sash feels heavier than usual, inspect promptly to avoid major damage.