From its roots as Collins Developments to its specialist role restoring Cambridge’s period windows, Cambridge Sashcraft has built a business around careful repair, technical improvement and local knowledge. As energy costs, conservation demands and sustainability pressures reshape the market, the company is showing how traditional joinery can meet modern expectations.
Cambridge Sashcraft is a family business with a particularly local story. The company began life in 2000 as Collins Developments, before Cambridge Sashcraft was developed in 2013 to meet a clear need in the city’s housing stock. Cambridge is rich in Georgian, Victorian, Edwardian and interwar properties, many of them defined by timber sash and casement windows. Those windows contribute strongly to the look and value of local streets, but they also present practical problems when age, decay, draughts and changing expectations begin to show. From its base on Glebe Road, the business has built its reputation by treating those windows as assets worth conserving, rather than problems to be removed. Helen runs the office, while Liam oversees work delivered by a team of professional local tradespeople. That structure has helped the company retain a personal feel while growing its capability. Its work now spans homes, schools and colleges, reflecting both the depth of Cambridge’s built heritage and the breadth of customers looking for sensitive, practical improvements.
The company’s services are designed around the principle that most period timber windows can be restored and upgraded. Its renovate and upgrade service tackles windows and doors that are rattling, draughty, leaking or rotten, using traditional joinery alongside the Repair Care International system. Sashes can be removed, stripped, repaired, re-corded, balanced and decorated, while doors, mouldings, stained glass and surrounding joinery can also be restored. For owners wanting a larger performance improvement, Cambridge Sashcraft fits bespoke double-glazed replacement sashes within existing boxes and frames. This approach avoids unnecessary disturbance to plaster, walls and internal mouldings, while retaining the proportions and character of the original installation. Where full replacement is required, the company manufactures slim-profile sash and casement windows suitable for conservation projects, traditional-style new builds and sensitive extensions. Its technical specification is central to the offer, covering heritage glazing, vacuum glazing, sustainable hardwood, Accoya wood, acoustic performance, thermal improvement and high-quality window furniture. The result is a business model that combines restoration, manufacture and finishing, rather than treating windows as standardised products.
The challenges facing Cambridge Sashcraft’s market are significant. Homeowners want warmer, quieter and easier-to-operate homes, but many also need to preserve historic integrity, satisfy conservation requirements and avoid inappropriate modern replacements. Rising energy costs have made thermal performance a boardroom issue for homeowners, landlords, schools and colleges alike. At the same time, the construction sector is under pressure to reduce waste, use responsible materials and extend the life of existing assets. Cambridge Sashcraft’s answer is to prioritise repair wherever possible, then improve performance through careful detailing. Its patented Advanced Sealing System, protected under UK and European patents, uses Schlegel weather seals to reduce draughts, noise and dust ingress. Combined with heritage double-glazed units or vacuum glazing, the system can deliver meaningful improvements without the visual compromises associated with many replacement products. The business also works with local specialists, including stained and leaded glass expertise, to ensure decorative features are repaired or replicated properly. This combination of craft, evidence and conservation awareness positions the company well in a market where customers increasingly expect both authenticity and measurable improvement.
Sustainability is not presented as a separate message; it is embedded in the way the company works. Repairing existing boxes, frames and doors avoids needless disposal and reduces the disruption that comes with wholesale replacement. When new timber is needed, Cambridge Sashcraft uses sustainable hardwood and is also an approved supplier and manufacturer of Accoya, a modified wood known for durability, stability and strong environmental credentials. Its use of microporous paint, high-quality glazing and long-lasting repair systems supports the same aim: work should endure. This matters commercially because customers are becoming more informed and more demanding. They want reassurance that investment in their property will reduce draughts, improve comfort, limit noise and protect value. They also want suppliers who understand planning sensitivities and the responsibilities that come with historic buildings. Cambridge Sashcraft’s development from a local family business into a specialist with patented technical knowledge shows how smaller firms can compete by deepening expertise. Rather than chasing volume, it has focused on a defined market where quality, trust and continuity matter.
Cambridge Sashcraft shows how specialist firms can grow by respecting buildings, clients and materials alike. Its story also reflects a wider market shift towards repair, performance and careful stewardship today. By combining craft skills with tested technology, the business offers practical answers for period properties. For owners facing energy pressures, sympathetic upgrades can protect character while improving everyday comfort too. That balance of heritage, efficiency and service gives Cambridge Sashcraft a clear commercial purpose locally.
