Understanding Sash Windows and Their Alternatives

Sash windows have been a mainstay of British homes for centuries. Their timeless proportions and smooth sliding design offer both elegance and practicality. At Brown’s Sash Windows Restorations, we specialise in restoring and repairing these classic timber windows to keep them working beautifully for generations.

Single and double hung sash windows

Traditional sash windows were single hung, with the lower section moving up and down using a system of weights and pulleys concealed in the frame. This simple mechanism gives the window its smooth movement and balanced operation.

The more modern double hung sash allows both sashes to move independently, giving better control over ventilation. The upper sash can be lowered to let warm air out, while the lower sash can be raised to bring in fresh air. Many newer models also tilt inwards, making cleaning easier from inside the home.

The drawbacks of modern plastic versions

While uPVC sash windows have become common, they come with compromises. Plastic frames and internal clips can wear out, causing sashes to slip or jam. With so many makes and mechanisms, repairs can be difficult and spare parts hard to source.

Sealed double-glazed units are also prone to condensation between the panes if the internal seal fails, leaving a permanent misted appearance that is costly to replace.

Alternatives to sash windows

If you are considering other types of windows:

  • Casement windows open outwards on side hinges and work well in modern homes.

  • Jalousie or louvre windows use glass slats that tilt open and are best for mild climates or enclosed porches.

  • Awning windows open slightly from the top for limited ventilation but are less suited to full-house installations.

Why traditional timber sash windows are still the best choice

For period and character properties, timber sash windows remain the ideal option. They combine beauty, practicality, and longevity while maintaining the original look of the home.

At Brown’s Sash Windows Restorations, we:

  • Repair damaged frames and sills

  • Replace sash cords and rebalance weights

  • Add discreet draught proofing and glazing upgrades

  • Retain every original feature and architectural detail

With proper care, restored timber sash windows can last for generations, offering natural ventilation, warmth, and traditional charm.

If you’re planning a project and need help with sash window repairs, draught proofing, or full restorations, we’re here to help. Whether you’d like to arrange a site visit, discuss your options, or ask a question, just get in touch.

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