Thanks, I appreciate your input. The joists would be further than 400ctrs though - more like 970mm with the 4 spaced across the central ‘segment’. Am I much too far apart now?
I’m looking to add some additional support to my new build garage roof trusses prior to boarding the space out and using it for some general storage. In typical ‘new build’ ways, the developer has said that the existing trusses are not suitable for supporting any more weight than the roof and...