Basic cleaning
Aluminium and PVC require little maintenance, but clean frames and glass with mild products and avoid abrasives.
Gaskets and hardware
Keep gaskets clean and flexible. Hardware may need occasional checking or lubrication depending on use.
Drainage
Many windows include drainage channels. If blocked by dust or leaves, water may accumulate.
Daily use
Do not force handles, avoid wind slams and use tilt-and-turn positions correctly.
When to request a check
If air, new noise, difficult closing, unusual condensation or leaks appear, ask for professional adjustment and sealing review.