Market leading I-Joists from James Jones

JJI-Joists are the UK’s market leading I-Joist and the only one that can be supplied with a carbon negative impact figure to PAS 2050 standards.

Floors: JJI-Joists have full design and software support, including BIM output, making complex design solutions easy, including integration of services like MVHR.

Walls: JJI-Joists provide deep section wall studs allowing increased levels of insulation to meet the highest U-Value requirements, while reducing thermal bridging and cold spots.

Roofs: JJI-Joists can be used individually or in cassette form to provide lightweight and immensely strong structures.