Though similar to renovation, its more limited in scope. Most components on interior and exterior fixtures are system driven and like any other system maintenance is key for effective performance and output. This also helps achieve a long-term utility and durability of the casement. Most people only remember to maintain when they encounter a problem with performance. Its usually small things that malfunction like a chip of aluminium, dropped screws, chipped paint and plaster causing big and costly trouble when ignored. Always check your windows and doors for smoking guns like leaks, dump walls, cracks in paint, damage on the sealants used, chopped screws, chips of glass and difficult in sliding or swinging any window or door.
System maintenance is part and partial of all systems. Avoid an irritating look and compromised performance of all your windows and doors. Its so important to keep a routine check on all interior and exterior casement system.