From its Cambridge roots as Collins Developments to a patented sash window specialist, Cambridge Sashcraft has built a reputation around conservation, performance and careful workmanship. As regulation, energy costs and sustainability reshape traditional joinery, the family business is showing how heritage skills can adapt without losing their character or purpose.
Cambridge Sashcraft’s story begins with Collins Developments, founded in 2000, and develops into a more specialist chapter with the creation of the Sashcraft brand in 2013. The business grew from a clear local need. Cambridge has a substantial stock of older houses, colleges, schools and commercial buildings where timber sash and casement windows are central to both appearance and value. Many of those windows have suffered from age, failed paint systems, draughts, broken cords, poor repairs or unsympathetic replacements. Rather than treating heritage joinery as a problem to be removed, Cambridge Sashcraft has built its work around restoration, upgrade and careful replacement. The company remains family led, with Helen running the office and Liam overseeing projects delivered by a team of local tradespeople. That structure matters, because the market it serves is personal as well as technical. Customers are often asking the business to work on the character of their homes, not simply their windows.
The current challenges facing the industry are substantial. Property owners want warmer, quieter homes, but many also want to preserve original features and avoid the visual compromises associated with standard replacement products. In conservation areas and listed buildings, the balance is even more demanding. Cambridge Sashcraft’s response has been to combine traditional joinery with carefully selected modern materials and systems. Its patented Advanced Sealing System, protected in the UK and Europe, uses an arrangement of Schlegel seals designed to improve draughtproofing, acoustic performance and thermal efficiency. This is a practical answer to a longstanding weakness in period windows: air and sound find their way through gaps. The company also offers slim heritage double glazed units and vacuum glazing, including FINEO and LandVac options, to improve performance while retaining a traditional appearance. That technical development reflects a wider industry shift. Heritage specialists are increasingly expected to evidence comfort, efficiency and sustainability, not just craftsmanship.
Sustainability is another pressure that is changing how traditional building trades compete. Cambridge Sashcraft’s approach is rooted in the view that repair should come before unnecessary replacement wherever possible. The business is an accredited user of the Repair Care International system, using epoxy-based repair methods alongside traditional joinery to conserve timber affected by decay or damage. Its renovation work typically includes stripping back defective paint, repairing timber, replacing cords, recalibrating weights, fitting draught seals and applying microporous paint systems. When replacement is needed, the company uses materials chosen for durability and environmental performance, including sustainable hardwood and Accoya wood. Accoya’s dimensional stability, durability and thermal insulation make it well suited to windows and doors exposed to weather and changing humidity. The company also works with local partners, including Rosewood Joinery and stained glass specialist Damon McDonald. This local supply and skills network helps preserve knowledge while reducing the need for generic, off-the-shelf solutions.
For Cambridge Sashcraft, the market opportunity lies in helping customers make informed choices between renovation, sash replacement and complete replacement. Its services cover draughtproofing and upgrade, new double glazed sashes within existing boxes, and bespoke slim profile replacement sash or casement windows for period-sensitive projects. The company’s work is relevant to homeowners, landlords, schools, colleges and businesses seeking better comfort without losing architectural integrity. Its complete replacement service is aimed at properties where original windows have already been lost, or where new buildings and extensions require historically sympathetic detailing. The challenge is to maintain craft standards while handling rising expectations around communication, certification, energy performance and long-term value. Cambridge Sashcraft’s emphasis on detailed process, technical specification and careful decoration gives it a credible position in a market where trust is essential. Its history shows that specialism can be a strength when it is backed by continual product development and disciplined workmanship.
Cambridge Sashcraft’s progress shows how specialist trades can grow by respecting place, materials and customers. Its history also demonstrates that innovation matters most when it solves practical, familiar problems well. Sustainable restoration will remain essential as property owners seek comfort without unnecessary replacement or waste. The company’s challenge is maintaining craft standards while meeting rising expectations on efficiency and service. That balance gives Cambridge Sashcraft a credible role in conserving homes for future generations locally.
