Wesbeam is the only Australian manufacturer and distributor of I-joists with a world class factory in Perth. e-joist combines the latest engineered wood technology with LVL to create a floor joist that's lightweight, straight and strong. Manufactured from LVL and oriented strand board (OSB), e-joist has the same strength as a solid LVL beam of the same size but uses much less wood, making it lighter and easier to handle. Floors: Yes - Roofs: Yes Walls: No - Formwork: No - Internal: Yes