The Majestic
King Post & Queen Post
Oak Roof Truss

The king post was used extensively throughout Romans buildings, Medieval Churches and Tithe barns. It also featured in buildings of the Gothic Revival and Queen Anne periods.
The oldest surviving roof truss in the world is a king post truss in Saint Catherine’s Monastery, Egypt, built between 548 and 565!

Vaulted roof designs really do make great rooms
The timeless character and stunning aesthetic of the Traditional Oak Roof Truss.
Our Oak Trusses typically feature:
  • Traditional manufacture techniques
  • Seasoned Oak
  • draw dowel, mortise and tenon jointed
  • Classic stopped chamfers
  • Diagonal struts
  • Queen post design
  • King post design
  • Scrolling detail
  • Shaped brackets
  • Elevated Tie Beam
  • Design Calculations
  • Assembled & Delivered
Admire the Craftsmanship
In years past there wasn’t any structural calculation done to determine suitable timber sizes. Instead it was down to the carpenters’ experience and probably what trees were available locally.
‘Erring on the side of caution’, and their ‘Belt and braces’ approach to the use of generously sized timbers, can be accredited to why we can still admire and enjoy their craftsmanship today.

Diagonal struts are a common component in both King Post and Queen Post Trusses, regularly seen as a straight member but can sometimes be shaped and be more decorative in appearance – they are a structural component and contribute greatly to the stability of the overall structure.

The King Post Truss

The King Post Truss consists of a central ‘King Post’, jointed to the Tie Beam and rising vertically to the Ridge.
The top ends of two main rafters are jointed to the head of the King Post.
Spans of 5 to 8 metres can be achieved with the king post truss.

The Queen Post Truss

The Queen Post truss consists of two vertical Queen Posts, that are joined at equal distances from the centre of the Tie Beam to the top end of the rafters.
There is also a horizontal timber (Straining Beam) that connects the two posts together at their head.
The Queen Post Truss can span greater distances than the King Post Truss.
Spans of up to 10m can be achieved with the Queen Post truss!

Advice on hand

Parkwood Joinery have manufactured bespoke joinery for 35 years.

We are happy to advise clients on the products we offer.

At the planning stage we can liaise with the clients architect and local building control departments.

Of course, we are always ready to help your building contractors (for instance, with any required drawings), especially where they must build bases and walls while we manufacture the timber structure. Accurate setting out is so important, we can liaise with your builder by phone or email to help interpret architectural detail and drawings.

Traditional & Contemporary 

The King Post Truss was a traditional structural element incorporated into many period roof structures. We are often asked to add a King Post Truss feature to our more contemporary Painted Conservatories. The combination works really well, giving an elevated focal point for the occupants to enjoy whilst reclining!

The Truss Roof

In its most basic form, a roof truss consists of a horizontal Tie beam (Collar) and two Rafters that are secured to the ends of the Tie Beam and rise diagonally inwards to meet at an apex point centrally above the span.
The Truss is positioned perpendicular to the outer walls of the building, and secured to Wallplates that run the entire length of the building.

Several Trusses evenly spaced, along the roof provide structural stability for the Purlins and ridge timbers. The Tie Beam also stops the outer walls spreading apart.
Purlins are the heavy timbers that run laterally. They provide intermediate support and a securing point for the Common rafter, usually half way up its length.
The Ridge is found at the apex of the roof, again running laterally it provides a means of securing the top end of the Common rafter in position.

At Parkwood we construct Oak King Post and Queen Post Trusses using the finest European lumber. We only source oak from P.E.F.C or F.S.C. approved sources.