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Lead has been used for centuries in traditional windows-primarily as counterweights in sash window box frames and occasionally in leaded light glazing (diamond-paned windows held by lead cames).
In sash systems, dense, corrosion-resistant lead weights balance the moving sashes via a cord-and-pulley mechanism, ensuring smooth, effortless operation.
Though sometimes replaced with cast iron or steel today, original lead weights are often retained or replicated in heritage restorations for authenticity and performance.
Putty glazing
Putty glazing is the traditional method of securing glass panes into timber window frames using linseed oil-based putty (often called […]
Annealed glass
Annealed glass is standard, untreated float glass that has been cooled slowly in a controlled process (annealing) to relieve internal […]
Gas filled unit
A gas-filled unit is a type of double or triple glazing where the space between panes is filled with an […]
