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We had the old beanbag filling done last year by Max Energy. We’re in Hackney. Was organised by the ASHP company so no idea about the procurement process (apart from when I turned away the first lot they sent cause they wanted to do poly fluff) but they seemed good and were much cheaper than any quotes I got myself.
We’d already done the windows but there was a few weeks where I’d find little carbon covered beans in odd places. Not a bad way of finding your air leaks tbh. Some will escape when windows are are done but you can always top up around the edges with expanding foam.
dbr
I am about to spend a decent chunk of change on cavity wall insulation.
1970's property with nothing at all in the cavity.
Getting quotes for poly bead and adhesive fill
There are a few risks I am worried about
Has anyone appointed an insulation contractor to do cavity wall insulation for them?
What sort of accreditations should I be looking for and what certificates do I or building control need?