Warning signs
Hinges or rivets are rusty, loose or missing.
The sash sags, wobbles or makes noise when opened.
The sash is hard to close or latch.
What to do
Stop opening the affected sash and have a member firm inspect it promptly. A sash falling from height can cause serious injury.
Replacing hinges
Use stainless-steel friction stays and rivets sized for the sash dimensions and weight, and ask for materials to be listed in the quotation.
Official sources
This page is general guidance, not legal advice. If rules change, the government department's information prevails.