Carpentry & Joinery
Sash Window Weight Calculator
Planning a refurbishment or upgrading to double glazing? Use this tool to estimate the exact weight of your sash windows before manufacturing.
Simply enter your rail dimensions and glass type to calculate the required lead weights, ensuring your windows are perfectly balanced and operate smoothly from day one.
Bring your sash windows back to life
Balancing the weight is just the start. If your original sash windows are draughty, rattling, or rotting, we can restore them to their former glory, often without needing to replace the entire box frame.
We specialise in:
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Double Glazing Retrofits: Installing slim-profile double glazing into existing timber sashes, giving you an upgrade in efficiency but maintaining the traditional look.
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Draught Proofing & Overhaul: Replacing staff beads, parting beads, and sash cords
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Full Reproduction: Manufacturing exact replicas of heritage sashes to match period property features, including glazing bars and sash horns.