I am planning renovation of 1/2 of our sold brick detached listed georgian house.
We have 45cm thick solid?? brick walls, and a 50cm thick solid spine dividing back house (kitchen) from front house.(living rooms)
I have ready much about the virtues of both low and high mass structures, - and accept that I find myself living in a high mass one.
We have young kids and tend to occupy the house all day, - i imagine we will continue that way
The house has a south facing aspect, and is dry and feels warm, - heating demands are not high !
ANYHOW
We wish to renovate the back half (north side), and have the opportunity to internally insulate, - meaning that we might change from thermal mass to air space heating in that part of the dwelling, - it's the north side so gets no solar gain anyhow.
If i leave the central solid spine wall uninsulated, - just insulate the outside walls, and maybe install underfloor heating & slab in new back space, - will i still get the benefits of thermal mass, and low thermal mass ?
3/4 of walls will be internal insulated & low loss, - and forth wall will be massive, - but internal, so any loss i have will go through into other part of house (south side which gets lots of solar gain anyhow)
We have modern condensing GCH, and use a stove as much as we can be bothered, and we'd like to use wood stove a lot more. Plans to get old rayburn for back room/kitchen discussed (cook & space heat only) and move modern pioneer stove into front house for space heating of living space.
Does my logic make sence, - and should I apply it to upstairs too ? - ie internal insulate back 2 beds and bathroom too?
Can you mix your thermal masses ?
Does partial internal insulation to a dry & warm 200 year old solid walled detached house really make sence ?
All ideas welcome.....
P