Renovate and Sash Replacement Service

Your house could become more efficient as a result of fitting double-glazed sash and casement sashes. Our replacement hardwood, double-glazed sashes will be fitted within your existing box frames and are a seamless match to the originals, while helping to reduce noise and heat loss.

Who is this service for?

Whether your property is Victorian, Georgian, Edwardian or from the inter-war period, we can upgrade your wooden windows with bespoke replacement double-glazed sashes. By working with the existing boxes or frames, we can upgrade your windows to make them more energy efficient, while causing minimal disruption to your property. 

Our stained glass specialist can also repair or supply exact replica stained and leaded glass. A discreet, conservation-approved double-glazed unit with bespoke beads can then be added to improve heat retention.

Using only top-quality fixtures and fittings, advanced glazing and draught-proofing technology and fully qualified joiners, we will put the ‘whoosh’ back in your windows.

The process

Our expert craftspeople will remove old sashes and repair the boxes and frames using traditional joinery methods and the Repair Care International System.

The new conservation-approved, Heritage Glass double-glazed sashes will arrive on site with a primer coat of paint for protection. We will plane them to perfectly fit the existing boxes or frames, which may be out of square.

Upgrade options

There are a number of upgrade options available that go even further to give you the best possible performance from your new replacement sashes and doors. We can talk these through with you, but they include:

  • Upgrading door and window furniture
  • Fitting acoustic glass for supreme performance
  • Improving U-values of the glass
  • Repairing decorative moulding, soffits and fascias
  • Upgrading and repairing stained-glass windows and panels
  • Stone repairs and replacement – to include bays, sills, mouldings and steps.


We will coat all external joinery with up to three coats of a high-quality microporous paint to provide a professional finish.

If you are inspired by your new windows we can cater for all your interior decoration needs with our professional decorating service.

The benefits

  • Adds value to your property while maintaining its historical integrity
  • Use of existing box and frame means no replastering, filling or redecorating of walls – and no risk of cracking
  • Internal and external mouldings are preserved
  • Heat loss is reduced
  • Less dirt ingress and external noise
  • Windows are easy to operate

Technical specifications


See what we can do for you.

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