Progress with internal wall insulating #3

I'm back on-site now. The last of the Udireco internal wall insulation went up today:

But generally speaking, progress on-site has been slowing down - not speeding up. Now that the road is open again and given how behind schedule we're running, some serious words are going to have to be had with the builders...

Design approach: wall insulation

Retro-fitting insulation to the walls of an existing building is a tricky subject, with much of the theory yet to be substantiated by real-world experience. However, the general consensus seems to be that external wall insulation (EWI) is the preferred option. The key issue is the movement of moisture within the building fabric. For EWI, as long as the insulation material itself is vapour-permeable enough, any moisture within the wall will find its way to the outside.

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