The builders have now started fitting UdiReco to the external rear wall of the house:
Note that the right-hand wall (with the bricked-up window) has deliberately been left, as the insulation is on the inside there. The job is waiting for scaffolding now.
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...
The builders have been doing general making good and plasterboarding work, in preparation for the plasterers coming in and putting the skim coat on the remaining rooms...United Utilities have now opened the stretch of road in front of our house...
The builders started putting up the UdiReco in the ground floor hallway and progressed up to the first floor bathroom. Here's a photo of where it was up to as of Friday...
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.
