![]() Watch the video below for a look at a professional weight and cord balance repair from Fort Worth expert, Brent Hull ↗.īack to Table of Contents Spiral How do spiral window balances work? It is challenging to find wood window repair technicians that do this sort of repair.The window sash must be completely removed from the opening to replace the balance system.The cotton cords fray or break and eventually have to be replaced.Equal weight creates a perfect balance and allows the window sash to move smoothly.ĭouble-hung window with weight and pulley system for each sash. In order to counterbalance the weight of the window, the weight in the jambs has to match the weight of the sash. The weights are attached to a cotton cord that extends up the jamb, over a pulley, and onto the operable sash. Windows with cord and weight balance systems have a box built into each side of the window (the jambs) where cast iron or lead weights are suspended. How do cord and weight window balance systems work? If your home has older wood windows they may operate with a cord and weight or chain and weight balance system.įun Fact: Prior to the invention of this counterbalance system, the operable sash had to be propped open with sticks, hinge systems ↗, or swivel blocks ↗. The cord and weight balance system was the first type of balance system installed in sash windows. We’ll introduce them to you from the oldest to the newest. There are four common window balances found in residential windows. Like the rest of the window system, balances have become more sophisticated thanks to modern technology. ![]() There are several types of window balances, the type of window balance found in your windows depends on the age of the window and the manufacturer.
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