A double hung window consists of a movable top and bottom sash.
Tighting vinyl windows.
Many modern replacement windows are vinyl and run on a spring system.
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.
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.
They control the tension when opening and closing the window.
Finding the right balance is easy.
Step by step instructions for correcting a double hung window that is too loose or too tight in opening.
The springs are located on the sides of the window in the frame.
Vinyl windows require a bit more in terms of adjustment but the job still is relatively easy.
Too tight and you ll find them difficult or impossible to open and close.
How to adjust a double hung window spring.
At this point your upvc window should fit snugly into the frame when closed.
Tighten the 8 screws once the sash has been adjusted.