Posi-Joists
The brilliance of posi-joists can revolutionise your construction projects. Combining unrivalled strength, bespoke design, and seamless service integration, Acorn Timber Engineering's British-engineered posi-joist systems deliver flexibility and efficiency for every build.
Advanced Structural Joists
What Are Posi-Joists?
We manufacture posi-joists, which are advanced structural timber joists that combine parallel timber chords with galvanised steel webs, forming a strong and lightweight open web design. This hybrid system delivers excellent strength-to-weight performance and is engineered to span longer distances than traditional solid timber joists while making it easy to integrate plumbing, electrical, and ventilation systems.
The standout feature of Posi-Joists is their open web structure. This allows plumbing, electrics, and ventilation systems to pass through easily, reducing installation time and avoiding costly drilling whilst preserving its original structural integrity.
Ready to Get Started? If you're based in the UK and looking for a reliable timber system, get in touch with the Acorn Timber Engineering design team today to discover how posi-joists can benefit your next project.
The Advantages
Key Benefits of Using a Posi-Joist System
Greater Span Capabilities
Posi-joists can span significantly longer distances than traditional timber or I-joists. This reduces the need for internal load-bearing walls or beams, allowing more open-plan design flexibility and a more straightforward build layout.
Fast & Easy Service Integration
The open web design allows for quick installation of plumbing, electrical, and HVAC systems, with no cutting or drilling required, minimising labour and maintaining structural strength.
Custom-Engineered for Your Project
Every joist is tailored to your exact load and span requirements, ensuring safety, compliance with building regulations, and efficient use of materials.
Faster On-Site Installation
Manufactured off-site with high precision, Posi-Joists reduce installation time, minimise waste, and support more sustainable construction practices.
Perfect For Pitched And Flat Roofs
Versatile Applications
Posi-Joists aren’t just ideal for floors. They’re also perfect for pitched and flat roofs. Whether you're building a new home, extending a property, or working on a commercial development, Posi-Joists provide a future-ready solution that enhances design flexibility and reduces construction time.
