Oak King Post Trusses

Precision Perfect Trusses

What is a King Post Truss?

A king post truss is one of the most traditional and widely used timber roof truss designs, valued for its structural efficiency and timeless appearance. Commonly used in both heritage and modern construction, king post trusses provide reliable support while creating visually striking open roof spaces.

The structure consists of a horizontal tie beam, two sloping rafters, and a central vertical king post. This central post connects the apex of the roof to the tie beam, preventing sagging and evenly distributing the load.

Optional diagonal braces can be incorporated to further strengthen the truss, making it suitable for a variety of residential, commercial, and architectural applications.

King Post Truss Design & Structure

The king post truss design is defined by its simple triangular form, which provides excellent strength while maintaining an open and spacious interior.

Oak king post trusses are particularly popular for:

  • Exposed beam ceilings
  • Vaulted ceiling designs
  • Traditional and contemporary oak frame buildings

Their clean, symmetrical structure makes them ideal for projects where both performance and visual impact are key.

Where Are King Post Trusses Used?

King post trusses are commonly used across a wide range of building types, including:

Traditionally suited for spans of up to 6 metres (approximately 20 feet), modern engineering and bespoke design allow for larger spans where required.

Their versatility makes them a popular choice for both structural support and decorative exposed truss ceilings.

All of our oak king post trusses are fully bespoke, allowing us to tailor each design to suit your exact structural and aesthetic requirements.

Typical specifications include:

  • Span: Up to 11 metres
  • Timber Type: Green oak or air-dried oak
  • Section Sizes: Commonly from 140×140mm up to 240×240mm
  • Pitch: Customisable (typically between 25°-45°)

We specialise in manufacturing bespoke oak trusses, ensuring every project is designed to meet both performance requirements and architectural vision.

Submit your drawings and measurements to speak with our design team and begin your project.

Products details

  • Timber Type: High-quality green oak or air-dried oak, selected for strength and durability
  • Assembly Type: Supplied in kit form for efficient on-site installation
  • Grading: Available in D24, D30, or D40 structural oak grades
  • Span Capability: Suitable for spans up to 11 metres, depending on design
  • Pitch Range: Typically between 25°–45°, fully customisable

All of our oak king post trusses are manufactured to order using a fully bespoke process tailored to your project.

  1. Submit your drawings or project requirements to our team
  2. Collaborate with our in-house design specialists to develop a detailed CAD model
  3. Once approved, your truss is precision-cut using advanced 5-axis and 6-axis CNC machinery
  4. Each component is quality-checked by our skilled craftsmen
  5. Delivered directly to site in kit form for straightforward assembly

This process ensures every truss meets the highest standards of accuracy, durability, and performance.

What is a king post in a truss?

A king post is the central vertical member in a king post truss. It connects the apex of the roof to the tie beam below, helping distribute loads and prevent the structure from sagging.

What is the maximum span of a king post truss?

The custom nature of each truss build means that we can be flexible with the trusses we create. We specialise in the manufacturing of bespoke oak trusses spanning up to 11 meters.

What is the difference between king post and queen post trusses?

King post truss: One central vertical post, ideal for shorter spans

Queen post truss: Two vertical posts, allowing for wider spans

Queen post trusses are typically used when the span exceeds what a king post can handle.

How much does a king post truss cost?

Costs vary depending on size, timber, and complexity.
In the UK, bespoke king post trusses typically range from:

  • £1,500 to £5,000+ per truss

For accurate pricing, a quote based on drawings or dimensions is required.

What are the benefits of a king post truss?

Key benefits include:

  • Strong structural support for small to medium spans
  • Creates open, vaulted ceilings
  • Traditional aesthetic suited to modern and period homes
  • Cost-effective compared to larger-span trusses
Where would a king post truss be used?

King post trusses are commonly used in:

  • Extensions
  • Barn conversions
  • New-build homes
  • Open-plan living spaces

They’re ideal where both structure and visual impact are important.

Are king post trusses structural?

Yes – king post trusses are often fully structural, designed to support roof loads. They can also be manufactured as decorative features, depending on project requirements.

Features And Benefits

Precision Manufactured Oak Trusses
Precision Manufactured Oak Trusses

Thanks to our advanced 5-axis HOMAG CNC and 6-axis CNC machinery, we manufacture highly accurate oak trusses, including king post trusses, to exact specifications. This ensures a precise fit and long-lasting structural performance.

Fast Lead Times on Bespoke Trusses
Fast Lead Times on Bespoke Trusses

Our bespoke oak trusses are manufactured and delivered efficiently, with typical lead times of just 3-6 weeks. We combine craftsmanship with modern processes to outperform standard industry timelines.

Outpacing Industry Standards

Easy-to-Assemble Truss Kit Systems
Easy-to-Assemble Truss Kit Systems

Our trusses are supplied in convenient kit form, making installation straightforward. Each oak truss is designed for efficient assembly, supported by clear guidance to ensure a smooth build process.

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