I-joists are engineered wood products that are commonly used in construction projects in Australia. They are made from a combination of oriented strand board (OSB) and laminated veneer lumber (LVL) and are designed to provide superior strength and stiffness compared to traditional solid wood joists.

In Australia, I-joists are commonly used for floor and roof framing, as well as for long-span applications where traditional solid wood joists would be too heavy or impractical. They are available in a range of sizes and lengths to suit different construction requirements.

I-joists offer several benefits over traditional solid wood joists, including improved dimensional stability, uniform strength, and resistance to warping and twisting. They are also easier and faster to install, as they can be cut to length on-site and do not require any special hardware or connectors