BRUNEL HOUSE

Brunel House is a listed building being converted into luxury apartments. Replacing the primary windows was not permitted, so our client needed to look at a different solution to gain the thermal performance required.

The windows were large sashes, requiring heavy duty frames with tilt facility, providing simple access to the primary windows for cleaning and maintenance. An unusual and bespoke feature of this project was – at the architect’s request – trickle vents installed in the bottom of the secondary glazing track.

With such large sizes it was important that the windows were smooth and simple to operate. For that reason we used pre-tensioned Torso II balances from Caldwell – the best balance system available.

The end result is that, without any visible sign of worksbeing done, tenants would experience comfort levels that match modern day double glazing, even though their windows are over 100 years old!

The client said: “the sightlines of the Incarnation system perfectly match that of the original sashes, which as a listed building is critical. The product was easy to install as the sashes could be removed from the frame, so even though they were large windows the weight factor could be mitigated. Overall, we are absolutely delighted with the outcome.”