What Is Window Hardware Balance
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What Is A Window Balance?
A window balance (sometimes called a sash balance, window spring, or window "balancer") is a somewhat hidden window component sitting inside the window frame. Window balances are only found in double-hung or single windows and counterbalance the weight of the sash assisting you with opening and closing your window hardware manufacturer. Window balances are found in both residential and commercial windows. There are many different styles, types, and sizes of window balances, so finding the correct replacement can be tricky and at times frustrating continue reading to learn more about specific types of window balances and how they function.
Block And Tackle Window Balances
Currently one of the most common window balances, block and tackle window balance systems includes a combination of two or more pulleys, a cord, and a spring. The pulleys are grouped as the “block” to reduce the load the homeowner feels. In addition, as the cord (or “tackle”) is pulled by the movement of the sash it stretches or compresses the springs, which are weighted to match the sash weight. The pulleys and springs assist with opening and closing the window. Block and tackle balances are selected based on the length of the metal channel and the stamp. Our 300 Series and 400 Series balances are classic examples of this type of balance and will most likely replace your current balance. There are also tilt versions of this balance, our 450 series fits this description. We have plenty of detailed articles on how to install block and tackle balances, how to measure block and tackle balances, and many more.
Spiral Window Balances
Another very common window balance is spiral window balances. Spiral window balances aid in opening windows, as well as holding windows open by utilizing a spiral-shaped rod within a tube. This rod connects to a spring, which is what provides the tension for supporting the sash. The tension is adjusted by being wound (using a spiral balance tensioning tool) to match the sash it is supporting. Spiral balances are one of the simplest types of balances to find replacements for. All you need is the length of the metal tube, color of the coupling on the end, and whether your window is tilt on non-tilt (sideload). If you don't know your coupling color, you will need to weigh your sash. The weight corresponds to a coupling color. You can find more information about spiral balances such how to measure spiral balances, how to install spiral balances and more by checking out our blog.
Coil Spring Window Balance
Coil spring window balances are a type of constant force window balance. These balances work by using stainless steel, coiled spring as a counterbalance. This type of balance system is designed to be more durable and quieter than other balance systems. There are several parts to a coil spring balance system: the coil, the balance spring cover, the balance drum, and the pivot lock shoe. To find replacements for your balances it is best if we have pictures of your current balance system along with your sash weight. We currently have our Series 31 Roller Tilt balance available online, but we have other series available as well. To have your coil spring balances identified, check out our article on how to submit window parts for identification.
Crossbow / Inverted Block & Tackle Window Balance
Crossbow balances are an older style tilt window balance that are no longer made. These types are functionally similar to inverted block and tackle balances. They are so similar that we convert all of our customers to inverted block and tackle window balances.
To be converted out of a crossbow balance and into an inverted block and tackle balance we need the following information:
1) The whole sash height
2) The glass height
3) The weight of your sash. To get an accurate weight you will need to remove the sash and weigh it using a bathroom scale or something similar.
4) The width of the plastic T shaped piece. It'll either be 15/16" or 1-1/4"
Inverted block and tackle balances function similar to standard block and tackle balances except that the string comes out of the top of the balance instead of the bottom. These tilt balances work in conjunction with a T-lock shoe to allow your window to tilt inwards. If you need to replace your inverted block and tackle window balance just take a look at your stamp, the length of the metal channel, and the weight of your sash to find the correct replacement.
Rope And Pulley Window Balance
This is the original window balance system. This type of window balances uses large weights to counterbalance the sash. These weights are hidden in cavities beyond the jambs. The weights are connected to ropes or chains and travel up and down as the sash is raised or lowered. The most common problem with this type or balance system is that the ropes will fray and break over time. The most common solution to this problem is to simply replace the chains. Depending on your window you may be able to update to a newer balance system. If you need help determining what option is best for you, just give us a call and we'll be happy to discuss your options with you.
As a professional door handle manufacturer,we accept all kinds of window hardware orders, welcome to consult.