following on from this https://singletrackworld.com/forum/topic/retrofitting-cavity-wall-insulation/
I had a chap round earlier to quote on insulating the wall. Its a single wall, approx 7m x 3m, no interruptions, good access (scaffolding up everywhere) and will be filled from the inside (so less messing around with making good)
the quote was £1500 which seems really high to me – I can’t imagine a load of insulating balls cost much more than £100, nor that it would take more than a couple of hours for one chap to do it. I accept I might end up paying a bit more per meter than a bigger job, but wondering if anyone had recently had cavity wall insulation put in and could provide a cost they paid. I don’t want to waste the time of more companies if this is the going rate..