What you can do
- Inspect accessible seals for dirt, gaps and cracks without leaning outside. Check whether airflow is intentional ventilation.
- Clean with a manufacturer-approved product and remove anything obstructing closure.
- Replace profiles or adjust only to the window instructions. Do not force the handle or cover air inlets.
How to tell whether it helped
The window should close without excess force. Persistent draughts need their source located.
When to stop
Arrange service for unstable heavy sashes, damaged hardware or leakage at the wall.
How NAPREMO can help
NAPREMO can assess the cause and repair scope. Show the window type and draught location.