This was just a quick video as requested by a viewer on how to check if a door needs adjusted, this is a simple effective method and all you need is a pencil and a good eye. Hope it helps and I'll follow up soon with adjustment videos. (I may do a more detailed explanation but this video was done for quickness)

Apologies for the camera skills :-/

The basis of this method could also be used on other types of doors or windows.

https://www.double-glazing-parts-spar...

Thanks for watching. DGPS