At Timbawood, we have recently completed extensive restoration work on the arched sash windows of a beautiful Grade II listed property in the London Borough of Richmond, South West London.
The property, a former convent overlooking Ham common, was being converted into luxury retirement apartments by a leading developer.
The beautiful early Georgian property features a series of elegant arched sash windows, as well as a striking feature window at the rear with ‘sunburst’ design.
The building’s listing in Historic England shows that the main block was built in the early 18th century, with the wings being built later in the 18th century and early 19th century.
It required delicate repair work both on site and in our factory to preserve the windows and their frames.
Because of its listed status and the condition of the windows, planning officers asked us to retain and repair the windows and doors as much as possible rather than replacing them.
We were able to repair most of the timber windows and doors, with some needing to be replaced.
Where the frames could be saved but the sashes were in poor condition, we replaced the sashes only with exact-match replicas and restored the original frames.
For those windows that could be repaired, each window was overhauled, deglazed and reglazed and any damaged timber was carefully repaired. We also added full perimeter draught-proofing with compression seals, and high security hardware, to upgrade both the security and the thermal insulation of the sash windows.
Because the original windows had been replaced at different times, each window was unique, with a variety of glazing bar thicknesses and configurations to contend with and preserve.
A beautiful Victorian conservatory extension that had been quite badly damaged also required extensive repair and reglazing work.
As you can see from the photo gallery, the results are impressive, with the building returning to its original Georgian grandeur and elegance.