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Conservation and
heritage windows

Every new double glazed or single glazed, timber conservation or heritage window we manufacture and install across London is made to measure.

We can replicate any sliding sash and casement windows with period styling from the Georgian, Victorian and Edwardian eras. We are experts in suppling and gaining planning permissions for replacement of traditional wooden windows for homes in conservation areas and listed buildings.

home iconThe Sashed conservation window product range includes:

  • Fully finished in the factory with 4 coats of spray paint
  • Optional oil based paint for grade I listed buildings
  • Q-Lon seals for optimal draft and noise reduction
  • Conservation friendly double glazing
  • UK and EU thermal and safety standards compliant
  • Modern security features
  • Traditional cords and weights
  • Casement and French windows
  • Sash window bays
  • Comprehensive ten year guarantee
  • Get a quote within 24 hours


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    If required, we can make your sash windows conform to listed building and conservation area requirements, using a combination of our conservation and heritage profiles, discrete double glazing and/or traditional single glazing & putty we are confident we can meet your requirements for listed buildings and conservation areas.
    Where possible Sashed will ensure that the window will perform to the same high standards of thermal efficiency and durability as our other windows, so you can expect many years of service from your conservation style windows with the minimum of maintenance.
    Sashed has a network of industry experts who have many years experience working on and dealing with listed buildings, across all of the grades below: Grade I Buildings of exceptional interest. Grade II* Particularly important and more than special interest. Grade II Buildings of special interest warranting every effort being made to preserve them.
    Sashed can call upon this network to help answer any questions or help guide you through the process of planning and conservation area mandates.
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