Case Study: Timber Window Replication for Orford Castle, Suffolk
Heritage windows for a Grade I listed medieval castle
H&C Joinery manufactured replacement timber windows for Orford Castle, a Grade I listed 12th-century castle in Suffolk cared for by English Heritage.
Working through a third-party contractor, H&C produced windows designed to closely match the originals, using English Douglas fir, English oak sills and a hand-painted linseed oil paint finish.
Project Specifications
| Project type | Bespoke replica timber windows |
| Property type | Medieval castle / historic building |
| Location | Orford, Suffolk |
| Building status | Grade I listed |
| Site managed by | English Heritage |
| H&C role | Manufacture of bespoke replica timber windows |
| Commissioning route | Supplied and installed through a third-party contractor working on behalf of English Heritage |
| Timber used | English Douglas fir |
| Sill material | English oak |
| Finish | Hand-painted linseed oil paint |
| Key design requirement | Replica windows made to respect the original appearance of the building |
| Relevant services | Heritage windows, listed building windows, bespoke wood windows |
Project brief
The requirement was to create replacement timber windows that respected the original appearance of Orford Castle while meeting the standards expected on a Grade I listed heritage project.
The new windows needed to be carefully made, materially appropriate and visually sympathetic to the building. On a historic site of this importance, the work could not be treated as a standard window replacement project.
The brief centred on three practical priorities:
- Manufacture bespoke timber windows as close replicas of the originals.
- Use traditional materials suitable for a sensitive heritage setting.
- Provide a hand-painted finish that complemented the conservation-led approach of the wider site.
The challenge
Heritage window work is rarely just about making something that looks right from a distance.
On a Grade I listed building, small details matter. The proportions, mouldings, glazing lines, arched heads, sill sections and paint finish all need to work together so the replacement windows feel natural to the building rather than newly imposed.
The challenge was to combine accurate replica joinery with practical durability, using materials and finishes that aligned with the conservation expectations of the project.
For Orford Castle, the windows also needed to sit within the wider context of a nationally important medieval building. That meant the joinery had to be restrained, accurate and respectful, not decorative for the sake of it.
H&C Joinery’s approach
H&C manufactured the replica windows using English Douglas fir for the main window construction and English oak for the sill sections.
English Douglas fir was used for the window frames, providing a traditional timber choice appropriate for carefully made heritage joinery. English oak was used for the sills, giving the lower sections of the windows a robust and historically suitable material.
The windows were hand painted using linseed oil paint, a traditional breathable finish often associated with conservation-led timber work. This helped the finished windows feel appropriate to the historic setting while supporting the character of the timber.
The joinery package included:
- Bespoke replica timber windows
- English Douglas fir main construction
- English oak sill sections
- Carefully formed arched heads
- Fine glazing bar detailing
- Traditional moulding profiles
- Hand-painted linseed oil paint finish
- Manufacture for a Grade I listed heritage site
- Supply and installation through a third-party contractor working on behalf of English Heritage
The aim was not to modernise the appearance of the castle. It was to create new timber windows that respected the original design and looked quietly appropriate within the building.
Traditional materials for a conservation-sensitive project
The key strength of this project was the use of traditional timber, careful replica detailing and a finish suited to a historic building.
For listed buildings, material choice is not just a technical decision. It affects how the joinery looks, ages and sits within the architecture. The use of English Douglas fir, English oak and linseed oil paint helped support the conservation-led nature of the work.
The finished windows combined:
- Replica timber window design
- Traditional material selection
- English Douglas fir construction
- English oak sill sections
- Carefully formed arched heads
- Fine glazing bar details
- Hand-painted linseed oil finish
- A restrained appearance suitable for a Grade I listed castle
This is the type of project where the best joinery should not shout for attention. It should look as though it belongs.
Why this project matters
The result
This project plays a pivotal role in showcasing the craftsmanship and precision that H&C Joinery brings to bespoke joinery solutions. By focusing on the unique needs of our clients, we have been able to deliver exceptional quality and design that not only meets but exceeds expectations. The impact of this project extends beyond aesthetics, contributing to enhanced functionality and increased property value. Our commitment to sustainable practices ensures that each piece is not only beautiful but also environmentally responsible, reflecting our dedication to preserving the heritage of the structures we work on.
specialist replica timber window work
Orford Castle is not a normal building, and this was not a normal window project.
Grade I listed sites require a different level of care. Replacement joinery needs to respect historic fabric, original appearance, conservation expectations and the character of the wider building.
This case study demonstrates H&C’s ability to manufacture bespoke heritage windows for projects where standard timber windows would not be suitable. It also shows the level of craft required when working on nationally important historic buildings, conservation-led schemes and listed property projects.
For architects, contractors, heritage organisations and owners of listed buildings, this kind of project provides clear evidence that H&C can handle specialist replica timber window work.
Our Most In Demand Services
Common Inquiries About Our Joinery Services
What types of timber do you use for your projects?
We primarily use sustainably sourced hardwoods and softwoods, including oak, mahogany, and pine, to ensure durability and aesthetic appeal in our joinery projects.
How long does it take to complete a custom joinery project?
The timeline for completion varies depending on the complexity and size of the project. Typically, bespoke joinery projects can take anywhere from a few weeks to several months.
Can you match existing woodwork for restoration projects?
Absolutely, our skilled craftsmen can replicate existing woodwork to seamlessly blend new pieces with your current architecture, preserving the original style.
What is the process for getting a quote?
To receive a quote, please contact us with details about your project. We will arrange a consultation to discuss your needs and provide a detailed estimate.