Moderate Urgency
Window Won't Stay Up: Balance and Spring Repair Guide
Window slides down on its own? The balance or spring mechanism is likely broken. Learn causes and get repair options from Virginia Glass Windows.
5
Warning Signs
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Known Causes
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Solution Steps
Free
Professional Assessment
Common Symptoms
Window slides down immediately after being opened
Window slowly creeps closed on its own
You need to prop the window open with a stick or object
Sash feels very heavy or unbalanced when moving
Visible broken cord, chain, or spring inside the window channel
What Causes This
Broken spiral balance or block-and-tackle balance
Snapped sash cord in older double-hung windows
Worn or stretched spring mechanism
Detached balance shoe from the sash
Wrong balance size installed during previous repair
How to Fix It
Solution Steps
1Identify the type of balance system in your window
2Check if the balance is disconnected rather than broken
3For spiral balances, check if the rod has disconnected from the sash
4For block-and-tackle systems, examine the cord and pulley
5A professional can measure and replace the correct balance type
6Replacement takes about 15 to 30 minutes per window
When to Call a Professional
When you cannot identify the balance type or problem
When the balance needs replacement rather than reattachment
When multiple windows have the same issue
When the window is large or heavy
Stay Ahead
Prevention Tips
Avoid slamming windows open or closed
Do not use excessive force on the sash
Have balance mechanisms inspected during routine maintenance
Replace balances proactively when they show signs of wear
Common Questions
FAQs About This Problem
Modern windows use balance mechanisms (spiral balances, block-and-tackle systems, or constant-force balances) that counterweight the sash. Older windows use sash cords and cast iron weights hidden inside the frame.
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