Insulation on old house

[pterodroma]

I have a big old house with solid walls. We heat the place with a GSHP and radiators, supplemented by wood burners in living areas when it gets cold. It works very well. There were a couple of oil fired Rayburns running the heating when we moved in...

I worry about interstitial condensation but you could look at installing an air gap membrane to dot and dab or batten off insulated plasterboard. Aerogel is prohibitively expensive. Of course, you could just try living with it and seeing how it goes rather than relying on assumed U-values for your walls...

In my experience, new windows and doors, lots of loft insulation and keeping unnecessary and/or excessive drafts to a minimum will make a very big difference.

[C Lee Farquar]

tom_loughlin said:

Properly specced in a properly specced house it works perfectly for my needs.
Tom

Properly specced from scant information, on a car forum?

[monkfish1]

Insulating an old house like this, assuming it doesn't have a DPC is simply asking for trouble - of the damp variety.. Dont do it. Lime with cork in it or similar to improve what you have, then upspec your GSHP so you can heat it, even with the inevitable losses.

You should maybe pay a visit here http://www.periodproperty.co.uk/forum/viewforum.ph...