A sash weight is used to counter-balance the weight of a sash in a box sash window. Correctly weighting your sashes will allow the sash to be suspended in any position and at any opening height without slipping down. Original sash windows contained single panes of glass and the sashes were relatively light. Modern sashes are double or triple glazed and heavier. As older windows are upgraded, sash window weights require replacing. Heavier weights are needed to compensate for the increase in glazing weight. So, back in 1985, Mighton Products developed the Steel Sash weight and they are now a standard in the sash window manufacturing industry. Steel weights are denser than their traditional cast iron counterparts, so you can squeeze more weight into a sash window box. Allowing you to compensate for heavier sashes. A simple solution and easy to fit.
We can calculate which steel weights you will need if you enter your sash sizes & glass configuration into our Sash Weights Calculator.
To avoid errors, after calculation, please check the steel weight section size will fit your window’s sash box or call us for advice on 01223 497097.
More information on fitting sash fitting weights is available in our Knowledge Hub.
Owing to manufacturing processes our steel weights can vary by up to +/- 5% in both length, section size and weight. Please check and ensure your window box and sash balancing can accommodate the variance before purchasing.
40mm x 40mm, 45mm x 45mm, 50mm x 50mm