- Radcliffe, Manchester
IMO you cant get better, no cavity needed either. like PIR boards but they need to be fitted tight up to the wall. On the boats i have done it makes such a difference. last boat i did, well mine, i sold it to a couple who live on it and have for two years now. very little condensation but for windows.and toasty warm. Sprat foam just makes sure now gaps like you could with the boards.Is spray foam good then?
I've started my build and seen it advertised more here, thought it was more an American thing tbh.
And think, lots of narrowboat owners use it so cant be bad there not going to spend around £80k+ on a boat to be cold and damp.