External Wall Insulation: Yay or Nay?

[Pedd2022]

Victorian Mid Terrace, solid walls, currently rendered on both sides. No damp issues internally at all, but the old render is cracking so figure it might be a good time to bump up that EPC, help the planet, etc.

Internet is full of articles saying either EWI helps avoid damp or contributes to it.

Thoughts?

 

[Deleted member 292770]

ewi if its free on a warm homes scheme.
if not I wouldn’t go near it.

 

[Pedd2022]

ewi if its free on a warm homes scheme.
if not I wouldn’t go near it.

Thanks for responding! How come? Just a cost thing, or material?

 

[Deleted member 292770]

cost against benefit= farce.
slightly more feasible on a detached but still wouldn’t entertain it.
can’t stand the stuff.

 

[mikeey84]

I signed up through the government scheme to get it installed under the government subsidy, but it all fell through before I could get the funds in place.

As above, the payback period is pretty significant, like 15 years or summat.

For 2 walls, I would seriously look at DIYing internal insulation. Its a pain in the ar5e, but a lot cheaper, and much more diyable than external

 

[^woody^]

Done correctly, ie a proper survey and suitable design, EWI is worth it and will realise significant increase in internal comfort and energy savings.