External or Internal Insulation for 1910 Property ?

[Pinoy]

Hello/Bonjour !
Looked at this house in the link below.
Constructed 1910, stone. As far as I know there is no cavity.
It has an EPC of G
My initial thoughts to (improve) this is to double glaze and add an external insulation on the sides of the house only - not allowed to do much to the facade (not listed building but French equivalent of conservation area).
The side you can see just has the one window, the other side, no windows.
Any thoughts on what is the best strategy here ?
Internal insulation a better option ?
Note - Climate tends to be fecking hot in the summer..July mid-day would be 30 to 40...winter/spring can get fairly wet...not often below freezing.

Link.....Maison

Thanks - Phil

 

[JohnD]

I see it is a detached house so it will benefit from insulation all round

External installation will alter the look of it so may need planning permission or equivalent. It would probably be done by applying a cement board over foam slabs, and rendering that. The house, and neighbours, look like they have stone facing on the front, to look posh, but maybe not at the sides or back.

Internal insulation may destroy internal features such as cornicing and skirting.

Ask at the Mairie, they will know what is usual in your town, and probably know the local contractors.

As for summer heat, a lot will come through the roof if it is not well insulated, but this is fairly easy to do internally.

You might consider solar panels. They make most of the energy in summer, on sunny days, so are ideal for aircon which is power-hungry. There might be subsidised schemes.

The windows may well have shutters or rollers.

 

[Ivor Windybottom]

Your plans sound sensible. Insulate the outside of the sides and back, and the inside of the front.

All after deciding whether you ever want to extend it, otherwise you'd be wasting money insulating a wall that's about to become internal.