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The part I find confusing again is section 10, 10.5, table 10.1 provides the performance requirements relevant to the boundary, building height etc. In my case it is “no provisions” and in the notes, point 2 and 3 it’s specifically states timber cladding over 9mm and flat sheet steel over 0.5mm...

Hi @JuddlyFire , that is all very useful and I appreciate the detail you have gone to here. A couple of questions if I may as I am in the presence of an expert!!! In table B3, Loadbearring Wall (which we are now clear SIPS are) the "type of exposure states "each side separately" so I assume...

The issue is focused around B19 Fire Resitance and the interpretation of SIPS with regard to tables B3 and then B4.

No, external is Corten steel and timber cladding all mounted on timber battens. So this is the rain screen. This meets the regs for B4: External Spread of fire. I. The building is under 11m and 1.3m from the boundary at the closest point. The issue is focused around B19 Fire Resitance and the...

Hi Deluks, the building inspector raised it and is happy with the external spread of fire and the internal protection but not the external protection of fire for the structure (the SIPS).

Calling on any builders, self-builders, architects, building reg gurus! This is my scenario. I have a SIPS building which is over 1m from any boundary. The outside of the building is clad in a combination of corten steel and timber. Building Inspector is happy it meets the surface spread of...