I have a house of Pella vinyl windows I installed. From day one, some of the windows wouldn't stay up in sections of their tracks. I took a look at the shoes and springs and the windows that won't hold seem to develop gaps in the springs.
On one window I removed the shoes and springs, cleaned the springs, rewound them to get rid of the gaps and reinstalled them. The windows were unchanged and the gaps returned. I then thought the gaps were forming because the springs were sticking so I put a little WD-40 on them and it improved the situation.
Window balance springs
Quick Learner
Oct 2, 2023 11:15 am
2 user uploaded images
3 Replies
Quick Learner from Columbia, MD
Oct 2, 2023 12:21 pm
I checked the windows that won't stay up and they all have gaps in their springs.
All of the ones that do stay up have NO gaps in their springs.
The question is, is the problem the springs or the shoes or both?
All of the ones that do stay up have NO gaps in their springs.
The question is, is the problem the springs or the shoes or both?
Lauren from SWISCO
Oct 4, 2023 3:32 pm
Hello, thank you for posting,
It sounds like the coil springs are worn or damaged. I would recommend removing the full assembly to see if there is any visible damage to the pivot shoe as well.
Please start by reviewing the style style and dimensions of the 15-251 inverted universal single support along with the S160-10 coil spring. This spring can support 10 pounds of weight. Together with the other side, the total window sash weight should be 20 pounds, please compare.
Measurements of 15-251
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