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Dorset Heritage specialise in the repair, restoration and replacement of traditional timber sash and casement windows, including double glazing, draught-proofing and sound proofing.

  • Replacement

  • Refurbishment

  • Repair

  • Double Glazing

  • Secondary Glazing

  • Draught-proofing

  • Sound-proofing

Dorset Heritage work on both commercial and domestic properties and have been involved in the restoration of some of The World Heritage Jurassic Coast’s most iconic listed buildings, sympathetically restoring period timber windows and doors to ensure the Georgian or Victorian charm, elegance and heritage is preserved.


Windows Poundbury

Lansdowne Villa, Rodwell, Dorset

Sash Window Repairs Weymouth

On listed buildings it is necessary and desirable to match the existing style and profiles of the existing/original windows. Replacement windows and parts are hand fabricated in our comprehensively equipped workshop to ensure that an excellent match and authenticity is achieved.

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Replacement and Refurbishment

Sash windows are restored by first removing the staff and parting beads, and then the individual sashes. Each window is assessed individually and restoration work carried out accordingly. This may involve:

Prince Regent Hotel

Before Restoration

Sash Windows Weymouth

After Restoration

Sash Windows Dorset
  • Replacing rotten sills, or repairing using spliced-in new timber or epoxy resin;

  • Cleaning up and sanding the sash boxes (frames), and removing any rotten wood and repairing as necessary;

  • Checking the operation of the sash weights, fitting new pulleys and renewing sash cords;

  • Re-glazing and re-puttying;

  • Replacing window furniture, such as catches and lifts;

  • Hand-finishing, painting and fine tuning.

On occasions the condition of the windows may make restoration impossible or uneconomic, replacement being the better option. Dorset Heritage manufactures new sashes, casements or complete windows, and doors in our own comprehensively-equipped joinery workshop. Existing profiles and designs can be matched, which is particularly important in listed buildings. A variety of timbers can be used according to specification, although Dorset Heritage uses Accoya as standard, which is guaranteed against rot for 50 years, is sustainably sourced, and has greater dimensional stability even than teak, and is approved by English Heritage for use in Listed Buildings.


Wooden Window Repairs Dorchester

New timber flush casement window with ultra-slim double-glazing, manufactured by Dorset Heritage and installed in a Grade II Listed 17th Century cottage in Affpuddle, Dorset

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Dorset Heritage can dramatically improve the draught and sound insulation of your existing sash windows, using a brush draught-proofing system which is both efficient and discreet.

Wooden windows Dorset
  • Virtually eliminate draughts

  • Improved thermal efficiency

  • Reduce heating bills

  • Stop rattles

  • Improved sound insulation

  • Compliant for Listed Buildings and Conservation area

  • Discreet

Thermal and sound insulation can also be improved by:

  • Double glazing (where allowed)

  • Secondary glazing

  • Acoustic glass

  • Improved fitting of sashes and casements

Call Dorset Heritage today for your free no obligation survey on 01305 567013 or email

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