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Timber doors, windows, gates & panelling

This is the side of the business people are most surprised by. We make timber windows, entrance doors, internal door sets, gates and wall panelling — jointed properly, machined on a 5-axis CNC, and made to fit openings that are rarely square.

Windows and doors

Doors and window sections are drawn in Cinch, the joinery software, and machined on our Format-4 profit H500 pod-and-rail machining centre: full mortice and tenon joints, dowel drilling, lock and hinge morticing and the profile all cut from the same program. Tenons are cut on the spindle moulder. It means the joint closes the same way on the fiftieth one as on the first.

Casement windows, box sash windows and glazed screens; entrance doors with multipoint locking and 3D-adjustable hinges; internal door sets with the frame, architrave and moulding machined to match and pre-finished before they arrive. Glass is supplied and fitted through our glass specialists, including slim-profile units for heritage openings.

Gates and external joinery

For anything outside we build in Accoya and Tricoya — modified timber and modified MDF that hold their shape and their paint in British weather much better than softwood. Arched heads, herringbone and chevron boarding, automation cut-outs and drop bolts are all machined rather than hand-cut.

Panelling and mouldings

Wall panelling to dado or full height, supplied and fitted, painted by our finishing partner. Moulding matching is a service in its own right: post us a 20 mm offcut of your skirting, architrave, dado rail or cornice, we model the profile, grind a cutter if we need one, and run as much as you want of it. That is how you extend a Victorian house without the new bit announcing itself.

Project stories

Doors, windows and gates

Entrance doors

A painted entrance door set

A glazed double entrance door with matching glazed sidelights, made in painted sapele mahogany and fitted into a brick opening on a house that had nothing square about it.

The first photograph is part-way through the fit, propped and packed while the frame is set; the second is the finished thing from outside. Entrance doors get multipoint locking and adjustable hinges as standard — a door this heavy needs to be adjustable after the building has settled.

Sapele, painted to the client’s colour
About 2150 × 2100 mm including sidelights
Simonswerk Tectus 3D concealed hinges, chosen for the weight
Full multipoint locking; aged bronze reeded lever

Worsley, 2023

A church door and arched window

Arched openings are where a 5-axis CNC earns its keep, and a church is the hardest version of the problem: no square corners, a head radius that has to match brickwork laid a century ago, and no second chance at the size.

We laser-scribed the opening with a Leica Disto 3D, so the scribes were cut before anything went to site. The arched window frame and the internal and external detail panels that give the window its depth were machined on the CNC from that survey. The door is grey painted with chevron boarding, hung under a glazed gothic fanlight — the head radius, the board angles and the glazing bars all cut from one program, so the boards meet on the centre line instead of nearly meeting.

Primed and top-coated ready to install. The same technique makes arched gates, arched window heads and curved-head panelling.

Opening laser-scribed with a Leica Disto 3D
Arched frame and detail panels machined on the 5-axis
Chevron boarding cut to meet on the centre line
Glazed gothic fanlight; painted and top-coated

Brass and black

Stained oak doors with brass inlay

A set of internal doors and wall panels in black-stained oak with a brass inlay border let into the face. The inlay is machined as a groove and the brass is mitred into it, which is fiddly and slow and looks like nothing else.

The second photograph is the batch racked up with the borders catching the light, which is the moment you find out whether every mitre matched.

Black-stained oak, brass inlay borders
Mitred inlay let into a machined groove
Brass lever furniture to match

Windows

Painted timber casements

Casement windows made in the workshop and fitted by us: painted frames, frosted glazing where it is a bathroom, Georgian bars where the house wants them.

Windows are made in batches and glazed once the frames are painted, so what turns up on site is a finished window rather than a frame and a promise. We have also made and shipped complete door and window sets abroad and gone out to fit them.

Cinch-drawn, 5-axis machined joints
Frosted, clear or Georgian-bar glazing
Painted before glazing, delivered finished

Stairs

Staircases and stair parts

Staircases, balustrades and the parts that go with them: newel posts and caps, spindles, strings, open treads and the understairs storage that makes the space underneath worth having.

Newel caps and other turned or shaped parts are machined on the 5-axis rather than carved, which means an unusual profile can be 3D-printed as a sample first, approved, and then cut in timber to match exactly. Balustrades are built up and checked in the workshop before they go anywhere near a site.

Open treads, strings, spindles and newels
Machined newel caps from a proven sample
Understairs storage worked into the flight

Gallery

Nineteen more doors, windows and panels

Click any photograph to see it larger.

New work goes up on Instagram first — @thetreeuk.

Replacing windows, or matching a moulding?

Send photographs and rough sizes — or post us a 20 mm offcut of the profile you need matching.

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