DindasJoist

Engineered I-joists

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Introducing DindasJoist

A Stronger and Lighter Timber Solution

DindasJoists are premium engineered wood products expertly crafted for floor systems and roof rafters in residential and light commercial buildings. They ensure consistent performance and deliver robust structures by efficiently transferring loads to beams, walls, and foundations. Dindas I-joists are the preferred choice among builders of residential and light commercial structures, reflecting our commitment to quality and innovation.

Exclusive Colour Coded System

Has a Colour Code for faster and easier I-joist identification on site.
Colour coded members matched directly to installation engineering drawings, resulting in quicker on-site certification and compliance.

Cost-Effective Installation

Lightweight and easy to handle – Faster installation than alternatives, with fewer beams needed to support heavier loads.
Pre-stamped knockouts for wires and the ability to cut larger holes in the web*.

Dimensional Uniform Stability

Extremely stable, resisting warping, twisting, and shrinking for lasting durability and peak performance.
It is free of traditional timber defects like gum pockets and strength-reducing knots.

High-Performance Engineered Wood Product

Each piece is highly consistent in the way it performs under load.
Flanges made with High-Grade LVL with type ‘A’ (marine) bond, renowned for its structural strength and long-lasting durability.

Sustainable Sourcing

As a Carbon Warrior partner, we only work with suppliers with verified Wood Source Certifications for responsible and sustainable timber.
Chain of Custody certification compliant for well-managed and sustainable forests.

Specifications

Applications

Internal (inside the building envelope).

DindasJoist is a versatile product with a wide range of construction applications, including residential and light commercial Floor Systems and Roof rafters.

Maximum Length

Available up to 12 metre lengths

Depth Options

190, 200, 240, 300, 360 and 400 mm

Width Options

45, 52, 58 and 90 mm flanges

Timber Grading

39 mm LVL Flanges and 9.5 mm OSB/3 Web

Treatments

Available as H2S and H2

Manufacture / Design

ASTM 5055

Certifications

SECA, APA and JAS ANZ

Advantages

Enhanced strength for high-load applications.
Lightweight and easy to handle – Faster installation than alternatives, with fewer
beams needed to support heavier loads.
Engineered for consistent performance – Extremely stable, resisting warping,
twisting, and shrinking for lasting durability and peak performance.
I-joists can be efficiently trimmed on-site and provide a broader nailing surface.
Features pre-stamped knockouts for wires and the ability to cut larger holes in the
web for mechanical systems, enhancing efficiency and speed.
Low-maintenance floor system offering significant cost savings.
Simple specification using advanced engineering software.
Backed by comprehensive warranties for added assurance.
High-performance engineered wood product ideal for Floor joist and Roof rafters
offering unparalleled strength, durability, and load-bearing capacity.
LVL flanges are manufactured with type ‘A’ (marine) bond, renowned for its
structural strength and long-lasting durability.
Available as H2S & H2.
Pre-stamped knockouts for wires and the ability to cut larger holes in the web*.
Chain of Custody certification compliant for well-managed and sustainable forests.
They are supported by Dindas Design Suite technical and software support.
Every DindasJoist item is marked with Dindas details for easy identification.
Commercial & Residential Span Tables are available on request.

*For DindasJoists RFPI Options only.

Dindas I-Joists come in a range of depths and widths to provide maximum choice in design and construction scenarios.

Check out our Interactive Single Span Joist tool

Resources

DindasJoist Engineered I-joists Flyer

Technical Bulletin - Storage & handling guidelines

Technical Bulletin - Effects of Moisture I-Joists and LVL

Technical Bulletin - Floor System Performance

Technical Bulletin - Round & square holes vs duct chase openings

Technical Bulletin - Safety & Construction Precautions

Technical Bulletin - Stacking of Gyprock on Dindas I-Joists

Technical Bulletin - Bridging or Blocking & Dindas I-Joists

Technical Bulletin - Modulus of Elasticity in Structural Timber

Frequently Asked Questions

What are Dindas I-joists?

Dindas I-Joists are premium engineered wood products known for their strength, lightweight nature, and ease of handling. They feature a unique “I” shape with LVL flanges and an OSB web, providing exceptional bending and shear resistance.

What are I-Joist used for?

They are ideal for floor systems and roof rafters in residential and light commercial buildings. Their design supports long spans, making them suitable for continuous spans up to 12 meters over intermediate supports.
Because our range of I-Joists is straight and accurate, it’s easier for builders and installers to build quality-level framing surfaces.
Check out the DindasJoist Span Table for the full range of our joists.

How are I-joists made?

I-joists are meticulously engineered using a combination of high-quality materials to ensure strength and durability. The manufacturing process involves bonding a top and bottom flange, typically made from laminated veneer lumber (LVL) or solid wood to a web made of oriented strand board (OSB) or plywood. This construction forms an “I” shape, which provides superior load-bearing capacity and enhanced stability, making them ideal for floor and roof systems.

Can I-joists be used as rafters?

Yes, Dindas I-Joists can be effectively used as rafters in various construction projects. Their engineered design allows for exceptional strength and versatility, making them suitable for residential and light commercial roofing applications. When used as rafters, I-joists provide reliable support and are easy to handle and install, ensuring a smooth construction process.