Timber frame joints: mortise and tenon, half-lap and dovetail

The frames of our verandas and canopies are held together by timber joints, not screws or metal brackets. In a mortise and tenon joint, a tenon cut on one beam slots into a mortise in the other and a timber peg locks it. In a half-lap joint, both beams are cut to half their depth so they sit flush. A dovetail is fan shaped and cannot pull out in one direction. All models are on wooden verandas made to measure.
Hand-cut joinery: Mortise and tenon and half-lap, not screwed together Sketch to 3D drawing: Every component numbered and cut to size Kit or full build service: Assemble it yourself, or we handle it

Deliverytime UK

7 to 14 days delivery time
For Fence and Decking
Free delivery from £4300
Up to £4300 delivery charge £250 Parcel service (small box) delivery £26

  • Free delivery from £4.300
  • Delivery in 14 days
  • Up to £4.300 delivery charge of £250
Package L
Ipe packages
Package XL
Large timber bundles
Canopies or steel doors
Delivery time about 8 weeks
From £ 4.300 free delivery
From £ 4.300 free delivery
England
Delivered in 15 days

Package L

From £ 4.300 free delivery

Package XL

From £ 4300,- free delivery
Wales
7 to 14 days delivery time

Package L

From £ 4300 free delivery

Package XL

From £ 4300,- free delivery
Scotland
7 to 14 days delivery time

Package L

From £ 4300 free delivery

Package XL

From £ 4300,- free delivery
Northern Ireland
15 days delivery time

Package L

Delivery price on request

Package XL

Delivery price on request

Carports · Traditional Joinery · Oak & Douglas Fir

Traditional Joinery: How Our Bespoke Carports Are Made

High-end quality isn't created in a factory, it's created in the joint. Every timber frame we deliver, in solid Oak or Douglas fir, is hand-crafted using traditional mortise and tenon joints and half-lap joints, with no visible screws. This page shows what that craftsmanship looks like in practice, from the first sketch to the finished frame.

Written by Tom Wegter (team leader IT) and Marc Westerhuis (team leader communications) at Hardwood Discount· last updated: 4 October 2026· Facebook · Instagram · YouTube · Pinterest

Mortise and tenon, half-lap: the foundation of every bespoke carport

What sets a high-end carport apart from a flat-pack kit isn't the paint finish or the dimensions, it's the joint. Every frame we build, whether in Oak or Douglas fir, is hand-crafted using a mortise and tenon joint: a projecting tenon that fits exactly into a mortise cut in the connecting beam, secured with a wooden dowel instead of a screw or bolt. On heavier structures this is reinforced with a half-lap joint, where both beams are cut away by half their thickness so they sit flush against one another.

From sketch to 3D construction drawing

Every high-end project starts with a sketch of your requirements: dimensions, layout and preferred roof shape. From that we produce a detailed 3D construction drawing, with every component of the frame already numbered. That way, you- and our craftsmen, know exactly how the structure fits together before a single beam is cut. That's the difference between true bespoke quality and a kit that happens to fit.

Gable, hip or flat roof: every shape hand-crafted

Whether you choose a classic gable roof, a stately hip roof, or a sleek flat roof, every roof shape is built with the same hand-cut mortise and tenon and half-lap joints. The roof shape defines the look; the quality of the joinery remains equally high in every case.

Oak or Douglas fir: two timbers, the same craftsmanship

Oak

Solid, heavy and exclusive, the most high-end choice for maximum durability and a robust look. View our oak carports.

Douglas fir

Warmer in tone, lighter in weight, with an excellent price-to-quality ratio, without compromising on the joinery. View our Douglas fir carports.

Whichever timber you choose, the mortise and tenon and half-lap joints, the 3D construction drawing and the finishing quality remain exactly the same. The difference lies in weight, colour and budget, not in the craftsmanship.

Self-assembly kit, or we handle the build

Every project is delivered as a numbered kit with a matching 2D and 3D construction drawing, so assembly is straightforward and predictable. Would rather not arrange a crane and lift the beams yourself? We can also take care of the entire build for you from the foundation and raising the first post through to the finished frame, using our own equipment and craftsmen on site.

Frequently asked questions about our craftsmanship

What's the difference between a mortise and tenon joint and a half-lap joint?

In a mortise and tenon joint, a projecting tenon fits exactly into a mortise cut in the connecting beam. In a half-lap joint, each beam is cut away by half its thickness so both parts sit flush against each other. Both techniques are hand-crafted, with no visible screws.

Do I get a 2D or a 3D construction drawing?

You start with a sketch of your requirements, after which we produce a detailed 3D construction drawing with numbered components.

Which roof shapes are possible: gable, hip or flat roof?

All three are possible. The roof shape determines the look of your carport; the hand-cut joinery is applied to the same high standard regardless of roof shape.

Can I assemble the kit myself, or do you also handle the build?

Both are possible. You receive a numbered kit with a 3D construction drawing for self-assembly, or you can have the entire build, including crane work, carried out by our team.

Is oak or Douglas fir the better choice for quality?

Both timbers are worked with the same hand-cut joinery. Oak is heavier and more exclusive, Douglas fir is warmer in tone and more affordable, the quality of the joinery is identical either way.