Internal insulation for block cavity walls

[Roger440]

Thanks for the explanation.

 

I see 2 issues preventing me here. One, i wouldnt have the first clue about how to manage or deal with the electronic/IT side of all that.. But probably more importantly, if it subsequently showed a problem, that would mean major rework to deal with it.

 

Thats not something i can do. If i do something it has to be right first time. 

 

Paying for WUFI is yet more money not spent on actual upgrades. Its not about justfying it, you still have to have it. If it just ended at that report it wouldnt be so bad. But it doesnt.

 

As i suspected, and you essentially confirm using a ubakus model isnt without risk.

 

Which leaves doing nothing as the only "risk free" option. Which, im not keen on as the extension is really quite poor thermally, not helped by fronting into the prevailing wind. The old stone part of the house is far better in that regard.

 

As regard joist ends, that something ive yet to establish what has been done. If its through to the cavity, that probably the end of cavity fill ideas.