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