Step by step instructions for correcting a double hung window that is too loose or too tight in opening.
Tighting vinyl windows.
Rotate the sash lock at the top of the lower sash to unlock the window.
Once the window has been adjusted give each of the 8 screws that you previously loosened a full turn clockwise to tighten them.
Then shut the window a few times to confirm that it opens and closes properly.
Vinyl windows require a bit more in terms of adjustment but the job still is relatively easy.
Many modern replacement windows are vinyl and run on a spring system.
At this point your upvc window should fit snugly into the frame when closed.
If the spring becomes too loose and worn the window may begin to slowly close on its own after having been opened.
Too tight and you ll find them difficult or impossible to open and close.
If your double hung windows are too loose they may rattle in the wind admit street noise and leak large volumes of air causing drafts and wasting your precious energy dollars.
They control the tension when opening and closing the window.
How to adjust a double hung window spring.
The springs are located on the sides of the window in the frame.
A double hung window consists of a movable top and bottom sash.