Description
Lead makeweights (or add-on weights) are used to fine-tune the balance of a box sash window sash. If a sash isn’t sitting quite right — often the case where heavier replacement glazing, such as double glazing, has been fitted to an older window — simply slide a makeweight down the cord to rest on top of your existing sash weights, then trim it to length until the counterbalance is exactly right. As lead is the traditional material used in period sash windows, it’s the natural choice where historical accuracy matters, and its density means you can add meaningful weight without needing much extra room in the box.
- Have you considered our steel sash weights? Save 30% against lead sash weights
- A cost-effective way to build up sash window weights and fine-tune the balance, without replacing the main sash weights
- Particularly useful where heavier replacement glazing (such as double glazing) has thrown the original counterbalance out
- Available in 0.5lb, 1lb and 2lb, all in a 38mm diameter section; the 1lb is also available in a 25mm square section
- 10mm hole fits all our sash cords, and the lead can be trimmed to the exact weight needed using a fine-toothed saw
- Lead is priced against the London Metal Exchange (LME), so prices may change without notice
- Please always follow proper safety and handling precautions when cutting or disposing of lead
Caution when sawing lead
- Lead is toxic — safe handling is essential; if unsure, consult a professional
- Wear protective gloves and a mask to avoid direct contact with lead and inhalation of dust
- Use proper tools in a well-ventilated area
- Collect and dispose of all lead shavings according to local hazardous waste regulations
- Wash hands thoroughly after handling
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