Bygone Sash Windows – Blending Heritage with Modern Performance
Case Studies
Client
Homeowner
Architects
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Contractor
Derwent Windows & Doors
Window Range
Symphony
Derwent Windows & Doors – Bygone Symphony
“This project was a pleasure to work on. Encapsulating the customer’s stained glass into the new Symphony sashes meant we could preserve an important part of the home’s character, while upgrading performance for years to come. The bespoke black finish and period detailing really brought everything together, resulting in windows that look entirely at home yet provide the modern efficiency and durability the customer wanted.”
Bygone Symphony Collection Sash Windows Retaining Original Features with added Energy Efficiency, and Minimal Maintenance
The background
The homeowner wanted to replace their existing sash windows with a solution that preserved the property’s character while introducing modern levels of comfort and performance. A key priority was to retain the original stained-glass features, which carried both heritage and sentimental value. They also requested a custom external colour finish to ensure the new windows complemented their home perfectly.
The solution
Derwent Windows & Doors recommended Bygone Symphony sash windows, the most authentic timber-alternative sash window available. The windows were customised with a 39mm slim meeting rail, deep bottom rail, and elegant polished bronze beehive furniture for a true period appearance.
To honour the property’s history, the original stained-glass units were carefully encapsulated and transformed into energy-efficient 18mm double-glazed units. These were then glazed into the new Symphony sashes, providing the beauty of heritage glass with all the benefits of modern performance.
For the finishing touch, the frames were factory-sprayed to a bespoke black colour, perfectly matched to a sample supplied by the customer.
The Bygone Collection Guarantee
Retaining Heritage, Improving Performance
Bygone Symphony windows provide an exceptional balance of period authenticity and modern engineering. Featuring patented Timberweld® joints, slim sightlines, and energy-efficient glazing, they replicate the traditional charm of timber while offering excellent durability and minimal maintenance.
The Result
The finished installation delivers:
- Authentic period detailing with slim rails and polished bronze furniture
- Retained stained-glass character, encapsulated into high-performing glazing
- Bespoke external colour-matched finish for a seamless appearance
- Long-lasting, low-maintenance sash windows with a 12-year guarantee
- The homeowner now enjoys the perfect blend of heritage and resilience – traditional aesthetics preserved, with all the benefits of modern Bygone Symphony sash windows.
“The Symphony Collection allows homeowners to retain the authentic features of their original sash windows, while enjoying the long-term benefits of modern energy efficiency and low maintenance.”
Bygone symphony sash windows
Bygone Symphony is widely recognized as the most authentic alternative to timber sash windows available today. The unique and attractive features of the Symphony range enhance its appearance, leading many who see it up close to believe it is made from hardwood timber. With energy-efficient, slim 18mm glazing and a distinctive 39mm GRP meeting rail, this product is nearly indistinguishable from traditional timber counterparts.
What makes Bygone Collection Windows so special?
- They feature a slim, sleek design that is visually appealing.
- Their thermal performance meets modern building standards.
- They boast beautiful period aesthetics that are nearly indistinguishable from traditional timber.
- They come with an unprecedented 12-year guarantee, thanks to numerous patents and exclusive manufacturing techniques.
- Minimal maintenance is required over a BBA approved life cycle of 30 years.
