Made in Britain
Manufactured to order in our UK joinery.
Made in Britain · Bespoke timber doors
Bespoke timber doors made for your home.
Entrance doors, French doors, bi-fold doors and back doors — made to measure in our UK joinery and installed by Box Sash.
Free, no-obligation online quote · Takes around 60 seconds
Made in our own UK joinery
Professional installation & compliance
Responsible timber sourcing50
50-year timber-frame guaranteeLong-term reassurance from the manufacturer
Established 1979Specialist timber joinery manufacturer & installer
Find the right door
The right door should belong to the building.
We make each door to the property rather than forcing a standard product into the opening. Proportions, glazing, panel rhythm, timber, hardware, thresholds and finish are considered as one specification.
Not sure which type is right? Start the online quote or call us — we’ll help you narrow it down.
Our timber door range
Choose the style that fits your property.
Every option is bespoke. If you are unsure, you do not need to decide before speaking to us.
Arrival, security and architecture
Entrance Doors
A successful entrance is a composition: door leaf, frame, fanlight, side lights, steps, ironmongery and surrounding architecture all need to work together.
Explore Entrance Doors →
Traditional symmetry to the garden
French Doors
French doors keep a familiar, balanced pair of leaves while introducing more daylight, a wider garden connection and modern weather, glazing and security performance.
Explore French Doors →
A wider timber opening
Bi-Fold Doors
Timber bi-folds can create a much wider garden connection while retaining the warmth, tactility and fine finish of proper joinery.
Explore Bi-Fold Doors →
Everyday joinery
Back Doors
Back doors work harder than most entrances: daily traffic, weather, security and utility-room life. These examples show a broader range of colours, opening types and practical settings, but every door is made to order.
Explore Back Doors →Need help choosing?
Tell us about the house. We’ll help with the door.
You do not need technical terminology or exact dimensions to begin.
Why Box Sash
One company from design to installation.
For a high-value door project, responsibility matters. Box Sash designs, manufactures and installs bespoke timber doors rather than simply reselling a generic system.
Made to measure
Proportions and detailing are specified around the property.
50-year frame guarantee
Long-term reassurance on the timber frame.
Installed by specialists
Survey, manufacture and fitting considered as one project.
Customer reviews
What Box Sash customers say.
Selected exact excerpts from public five-star Trustpilot reviews.
★★★★★
“Excellent all the way through. Good product and excellent customer service throughout the whole process. Can’t recommend them enough.”Mrs Carpenter
★★★★★
“Professional service and excellent product. OBSW were able to specify windows that other companies said were impossible.”Edward Christie
★★★★★
“The windows are stunning- excellent quality and the installation was so smooth and straight forward. We were thoroughly impressed.”Jill Benjoya Miller
A straightforward route to new doors
From first enquiry to fitted joinery.
Start your quote
Tell us what you are considering and roughly how many doors are involved.
Discuss the property
We clarify the style, performance priorities and the right next step.
Survey & specify
Measurements, proportions, glazing, hardware and detailing are resolved properly.
Manufacture & install
Your doors are made to order and professionally fitted.
Choosing the right specification
Which timber door type fits the opening?
Entrance doors define arrival and security. French doors create a balanced traditional pair to a garden. Bi-fold doors maximise the clear opening. Back doors prioritise everyday durability, weather performance and utility.
The best choice is not purely about how wide the opening can be. Panel rhythm, sightlines, thresholds, fanlights, hardware and how the doors look when closed all affect whether the new joinery belongs to the house.
Ready when you are
Start with a few details. We’ll take it from there.
The online quote takes around 60 seconds. Prefer to talk? Call our team directly.