What Are Sash Weights and Sash Balances Used For?
Sash weights and balances counterbalance sash windows, allowing them to open smoothly, remain open at the desired height and close correctly. The right system depends on the window’s design, available space and whether the project involves restoration, replacement or a new installation.
When Should You Use Lead Sash Weights?
Lead sash weights are a traditional choice for sash windows and are particularly well suited to restoration and heritage projects. Traditional sash windows have used both lead and cast iron counterweights for centuries. Lead was used in some of the earliest counterbalanced sash windows, while cast iron became increasingly common from the mid-18th century onwards and was widely used throughout the Georgian and Victorian periods.
Lead has the advantage of being considerably denser than iron or steel, allowing the required counterweight to be achieved in a shorter, more compact section. This makes lead sash weights particularly useful where space within the sash box is restricted or where heavier glazing requires additional counterbalance.
When Are Steel Sash Weights the Right Choice?
Steel sash weights provide a practical and cost-effective alternative to lead for sash window repairs, replacements and new manufacture. They perform the same counterbalancing function but are less dense than lead, so a longer or larger weight may be required to achieve the same mass. Where sufficient space is available within the sash box, steel weights can provide an economical solution for balancing traditional sash windows.
When Are Sash Balances Better Than Weights?
Sash balances provide an alternative to traditional cords, pulleys and counterweights and are particularly useful where a conventional sash box is not available or where space within the window frame is limited. Depending on the type of balance and window system, they can be used with vertically sliding and tilt-in sash windows, making them suitable for both replacement applications and modern window manufacture.
All our sash window weights and balances are manufactured to high standards, providing durable and reliable solutions for sash window manufacture, repair and restoration. Whether you're working on a traditional timber sash window or a modern window system, our range provides options to suit different window designs and counterbalancing requirements.
