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Why older sash windows can feel cold
Scotland’s traditional sash and case windows are valued for their timber craftsmanship and distinctive proportions. Yet older windows can allow cold air to enter through gaps around moving sashes. That can leave rooms feeling chilly even when the heating is on. In many cases the answer is careful maintenance rather than replacing the whole window.
Understanding the causes of draughts
Timber naturally expands and contracts as humidity changes. Over decades, staff beads, parting beads and meeting rails may become worn or loose. Sash cords can fail, and paint build-up can prevent the windows closing properly. Cracked putty or damaged external pointing may also need attention. An inspection should distinguish air leakage from other sources of heat loss.
What professional draught proofing involves
A specialist can fit discreet brush seals to suitable beads and meeting rails, adjust the sashes and service their moving components. Damaged timber should be repaired first, and any new seals must allow the windows to operate safely. Correctly installed draught proofing reduces uncontrolled air movement without changing the traditional appearance of the window.
Benefits beyond warmth
Reducing cold air leakage can improve comfort and may help reduce heating demand. Sealing gaps may also lessen some external noise, although acoustic glazing is more suitable for significant noise problems. Retaining serviceable windows reduces avoidable waste and protects features that contribute to the character of older properties.
Preserving heritage buildings
Listed buildings and conservation areas may require special care when making changes. Owners should check applicable consent requirements before work begins. Ventilation remains important: an airtightness improvement should not block necessary background ventilation or create condensation problems.
Finding specialist help
For information about sash and case window draught proofing, The Sash & Case Window Company explains repair, restoration and draught-proofing options for traditional Scottish timber windows. A condition-led approach can help homeowners decide which improvements are appropriate.
A sensible first step
Before budgeting for complete replacement, ask whether damaged cords, loose beads, worn seals or local timber defects can be repaired. A well-maintained original sash window can continue to contribute to the comfort and appearance of a Scottish home for years to come.