They had to apply for planning anyway because PD states it has to be used for heating only and they use theirs for cooling too. There was a reason why the installer recommended against a multi-split in their situation but I can’t remember.

Thanks for all the really useful advice everybody, despite doing the last house ourselves and basically stripping everything out to a shell, we’re feeling a bit daunted by all the new-to-us very technical work that we are having to learn and then do! So every little bit of advice builds our confidence that we can do this successfully.

As a result we have decided to do the EWI ourselves, but get a renderer in, we will fit the windows in the EWI as advised.

We’re pretty certain that we’ll go the warm roof option, but we’ll strip a section of the ceiling first, which we need to do anyway, to see what we’re up against, and if necessary take some tiles off.

I have requested a quote for windows from Russell timbertech and a quote for EWI from parex - thanks fostertom for the recommendations.

I’ll post in the products category when it comes to product selection for each job - if the renovation category makes more sense, someone let me know.

Thanks again



Ps. I’m thinking about doing a blog - I’m not aware of any for similar properties, but maybe I just haven’t happened across them. Thoughts?

Russell Timbertech are far from consumer-friendly - completing the specification is arduous, with options largely undocumented from their side; their spreadsheet which has to be signed off before the order is placed has to be carefully checked for errors, iterations taking weeks sometimes; and delivery is often delayed. So it all has to be worthwhile and to me it is, as their prifces (every time I've sought other competive quotes) are one third below anyone else and the quality is definitely adequate, if not superb.