I'll have a look for pictures.   Cellulose was blown in through 100mm holes in the PB, which is a down-side as they all need to be but back in. Yep, wiring through the webs of the I-Joists and down the lengths of then. Very easy for penetrating the outside (airtight) sheathing and gasketting all the holes to seal..   Edited to add:   Here's the only image I have of cabling into the insulated area...not much good.     But some more general ones o
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