200mm Cavity - What does it look like from inside

rampantbunny

Hi all. I'll be starting my new build this year. I'm currently chatting to my engineer about modifying my existing cavity wall spec.
New wall spec would be 100mm external, 200mm full-fill cavity, 100mm internal leaf.

Before I commit to this change though, I'd like to see this wall build up in real life. Not sure how the extra thickness of the wall will look from inside. Would it restrict light at windows etc?
Considering I have 200mm stone facing to apply at front of house the wall will be quite deep.

Anyone in West with this wall build up that wouldn't mind me taking a look?

fclauson

See attached

EDIT: pictures compress for ease of downloading

rampantbunny

fclauson wrote: »

See attached

EDIT: pictures compress for ease of downloading

Thanks Francis.

Are the pics of your own house? I've had a brief look back over some of your other posts to see what cavity width you went with, but have found nothing immediate. Thought it was >200mm i.e. 225 or 250mm?

I'd have to imagine what another 200mm of stone work would add to the pics.

fclauson

it was 250mm
Do you really need stone cladding - expensive and only to some peoples taste ?

rampantbunny

fclauson wrote: »

it was 250mm
Do you really need stone cladding - expensive and only to some peoples taste ?

lol...I take it that stone cladding is not to your taste?
I suppose you could argue that a non-stone clad house is only to some other peoples taste. I think it depends on the area really. It's all stone walls and stone facade houses where I'll be building so it won't be any kind of statement.
But to answer your question directly, no I don't need it.

Lots of things in my life I don't need but greed and bad taste are my masters

fclauson

rampantbunny wrote: »

...
Lots of things in my life I don't need but greed and bad taste are my masters

Building performance and low bills are mine :cool:

paddyp

Neighbours have a similar setup plus 50mm insulated slab on the inside the window recesses are really deep, this is exaggerated by the plannings requirement for narrow windows with a tall aspect. painting the recess with light & space has helped but he wishes that he had angled the recesses.

fclauson

Angled recesses can cause other issues around cold bridging -if you go this route get it modelled correctly and a psi value calculated

dos30

I've a 250mm cavity with stone on the front of the house.

I really like the deep window sills, lots of potential for window seats. Can't tell you what it's like to live with them yet though.

The house is finished on the outside and being plastered on the inside at the moment.
You're welcome to call and have a look, the house is in Limerick.

rampantbunny

dos30 wrote: »

I've a 250mm cavity with stone on the front of the house.

I really like the deep window sills, lots of potential for window seats. Can't tell you what it's like to live with them yet though.

The house is finished on the outside and being plastered on the inside at the moment.
You're welcome to call and have a look, the house is in Limerick.

250mm is impressive (go big or go home).
PM sent.

fclauson

some where between 200 and 250 is the break even point from thermal performance, aesthetics, practicality and cost