by Maintain | 18 September, 2026
Fulham Cross Academy, London
Conservation & renovation
Conservation-led replacement of historic timber and sash windows across more than 40 different designs, carefully phased around the school’s continued operation to minimise disruption and achieve challenging programme delivery targets.
Client: Lambeth Council
Principal contractor: Morgan Sindall Construction
Architect: Cartwright Pickard Architecture
Building heritage: Grade II listed
- Specialist refurbishment and conservation of existing historic timber windows
- Manufacture and installation over 150 new bespoke timber and sash windows across 44 different window types, ranging from elliptical portholes and traditional casements to large-format units measuring up to 3.2m x 1.4m
- Refurbished and replacement windows upgraded with high-performance FINEO® vacuum glazing
- Delivered window security enhancements alongside improvements to acoustic performance, draught proofing and overall occupant comfort
- Undertook a comprehensive site survey to inform the design, manufacture and installation strategy for the varied window types and configurations across the school
- Completed specialist investigations, including timber condition surveys, window assessments, damp investigations, materials testing and glass analysis
- Carefully planned and phased the works around the continued operation of the school, ultimately handing the project over nine weeks ahead of schedule
“Delivering the window replacement project within a live school environment was no small undertaking. We were delighted with Trinity’s careful planning, excellent craftsmanship and ability to exceed our delivery expectations – handing over well ahead of programme!”
Project Manager – Morgan Sindall Construction
by Maintain | 18 September, 2026
Conservation & renovation
Conservation-led restoration and repair works on this prominent Grade II listed Art Deco building, forming part of a wider heritage redevelopment scheme focused on preserving and enhancing the building’s historic character as it transformed into private residences.
Client: Lambeth Council
Principal contractor: Morgan Sindall Construction
Architect: Cartwright Pickard Architecture
Building heritage: Grade II listed
- Restoration and replacement of historic windows
- Repair and restoration of historic glazing
- Conservation, repair, and replication of roof domes, lanterns, and leaded light glazing
Specialist conservation joinery repairs
- Masonry repairs and facade cleaning
- Protection, repair, and conservation of retained historic fabric
- Delivery of conservation works in close coordination with the wider project team as part of a listed building redevelopment
“Trinity’s understanding of heritage conservation and commitment to quality were exceptional. Every aspect of the restoration—from the historic windows and glazing to the specialist joinery and masonry repairs—was carried out with care and expertise.”
Programme Manager – Morgan Sindall Construction
by Maintain | 18 September, 2026
Flannels, Flagship Store, Leeds
Conservation & renovation
A comprehensive window and building restoration programme, including the repair and refurbishment of historic windows, alongside associated facade works, terracotta and Portland stone repairs.
Client: Flannels, Frasers Group plc
Principal contractor: MCUK
Architect: Cartwright Pickard
Building heritage: Grade II* listed
- Restored 350 original Crittall windows, preserving historic detailing while improving their condition and performance
- Renovated traditional shop fronts, including associated glazing and joinery elements
- Completed internal and external window decoration and finishing works
- Undertook specialist repairs to window surrounds and associated historic fabric, including stone and terracotta repairs
- Carried out internal structural alterations to support the wider restoration works
“The team’s expertise, attention to detail and commitment to quality craftsmanship were evident throughout this significant window project. The restored windows, and Trinity’s wider work on our building and facade, look exceptional.”
Programme Manager, MCUK
by Maintain | 18 September, 2026
Southport Town Hall, Merseyside
Conservation & renovation
Conservation-led refurbishment and replacement of heritage windows to support improved energy performance while preserving the building’s historic character as part of a wider decarbonisation and civic estate improvement programme.
Client: Sefton Metropolitan Borough Council
Principal contractor: Trinity Renovations
Architect: BTP Architects
Building heritage: Grade II listed
- Restoration and repair of historic timber windows
- Replacement of defective or non-repairable window components
- Installation of slim-profile insulated glazing units where required to enhance thermal performance
- Draught-proofing, sound improvement and overhaul of existing sash and casement windows
- Internal and external decoration to restored timber windows
- Specialist joinery repairs, including splice repairs and replacement sections matching original profiles
- Careful planning and delivery of works within a live building environment to minimise operational disruption
“Trinity Renovations helped us improve the energy performance of our Town Hall. We really appreciated their considerate approach which enabled our building to remain fully operational throughout the project.”
Sefton Council
by Maintain | 18 September, 2026
Bootle Town Hall, Liverpool
Conservation & renovation
Heritage window restoration and thermal performance upgrades as part of a public sector decarbonisation programme. The works were commissioned to improve the energy efficiency of the Town Hall while retaining its historic character and operational use.
Client: Sefton Metropolitan Borough Council
Principal contractor: Trinity Renovations
Architect: BTP Architects
Building heritage: Grade II listed
- Restoration and repair of historic timber windows
- Repair, refurbishment and replacement of defective window components
- Installation of slim-profile insulated glazing units where required to enhance thermal performance
- Draught-proofing, easing, adjustment and overhaul of existing sash and casement windows
- Internal and external redecoration of restored timber joinery
- Coordination with the design team to balance improved thermal performance with the retention of historic character
- Works undertaken within a live civic building, maintaining its continued operation throughout
“Thank you for successfully combining specialist window restoration skills with modern thermal improvements, helping us to significantly enhance the energy efficiency of our Town Hall while protecting its historic character.”
Sefton Council
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