UK manufacturer and nationwide supplier of structurally engineered timber I-Joists, combining high grade softwood with an engineered composite panel.Suitable for use in residential and commercial floor, roof and wall applications.The highly acclaimed JJI-Joist combines high-grade softwood flanges with an Oriented Strand Board web. In addition, the JJI-Joist system also includes BJ Beam & BJ Rim Glulam for improved design flexibility.Other products include:-The JJ-IntelliRoof™ system, a fully engineered panelised solution for fast onsite erection of a fully decked, insulated, watertight, braced Room in Roof. The JJ-Screedflo system by James Jones & Sons Ltd. in conjunction with Screedflo Ltd, a fully engineered solution for fast onsite screed finished acoustic floors.