We are considering fitting air conditioning to our MBC build and I’m just working out how best to get the pipework fitted if we do go down this route. It’s looking like the best way is to fit a conduit, make it air-tight around its perimeter with an air tight grommet, push the copper pipe complete with its insulated sleeve through the conduit and then squirt some low expanding foam (or something similar) into the conduit just to improve the seal between the conduit and the pipe insulation.
As an approach, how does that sound? And is the low expanding foam idea a good one or not?
TIA