What is a balance? Featured in single-hung or vinyl/aluminium double-hung windows, a balance is a mechanical device that provides a counterbalance to the weight of the sash.
How does a balance break? Over time, it is typical for the spring built within the balance to become dull and weaken as a result of heavy usage. As older windows continue to be shoved opened and closed, the balance is likely to break.
What should I do? The best approach is to install new balances in place of existing ones to facilitate smooth window functioning.