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Unsolicited questions instead of answering your question. But. Isn't dot and dab insulation going to cause condensation/damp issues? Unless your vapour barrier line is 100%. Wouldn't a build-up with no cavity/void be better?
hoefla-
Well, i’ll take a steer when we get a quote but from what i have read you seal around the edge of each board/join both with tape and a continuous bead of adhesive. i presume it’s different depending on your wall being solid or cavity and if you have a membrane as part of the board(or not) but would obviously want to avoid interstitial condensation.
would remove skirtings and go right up to the slabs. -
ideally you'd want hygroscopic material to avoid interstitial condensation and to upgrade the buildings moisture management at the same time - some kind of mechanical ventilation
Mr_Smyth
gillies
If you were dry lining some insulation (not much probably 35-40mm dot and dab insulated plasterboard to a late 50’s concrete slab floor/ceiling/cavity brick/block walls flat and fitting new rads/piping would you over spec the rads and go bigger bore with one eye on the future?
At the moment a ASHP is out of the question as leaseholder will not allow it, they will not even let you fit aluminium double glazing to replace crittall so it’s secondary glazing only but i think they will have to wake up and allow ugly boxes to be fitted at some point and possibly cavity wall insulation in the whole building.
I still wonder if this is ever going to be enough to ditch the gas boiler given there is only so much you can do to a building from the 50’s/60’s?