Insulating a curved cavity wall

[Reiver]

So on my mad project idea (pics to be posted when I have accumulated enough info to do a reasonable 3D rendering) I have a couple of curved section cavity walls, which will need insulating obviously: ideally to at least 125mm if my sums are correct. I'm thinking that EPS beads are the most likely answer, but are there any other technologies that could work I wonder? FYI one section will have a radius of approx 1.5m to the insulation, the other about 2.7m.
 

[Conor]

You'd be better off using ICF. Easy to form to curves. If you've a lot of curved / awkward sections, ICF could be more cost effective 

[Russell griffiths]

As Conor said. 

[A_L]

10 hours ago, Reiver said:

but are there any other technologies that could work I wonder?

 

Supafil loose fill mineral fibre insulation from Knauf:-

https://www.knaufinsulation.co.uk/insulation-products/blowing-wool-insulation

or

Walltite, an injected polyurethane foam from BASF with a low thermal conductivity of around 0.025W/m.K

https://walltite.basf.co.uk/

 

[PeterW]

I would use EPS bead - quick and easy and can be used everywhere and you won't get joins between insulation types

[Reiver]

Thanks for the suggestions - I will go investigate and price up.

[Reiver]

5 hours ago, Conor said:

You'd be better off using ICF. Easy to form to curves. If you've a lot of curved / awkward sections, ICF could be more cost effective 

 

Can ICF be "bent" that tight? The inside radius would be something like1.2m - it's a tower for a spiral staircase BTW.

[Conor]

28 minutes ago, Reiver said:

 

Can ICF be "bent" that tight? The inside radius would be something like1.2m - it's a tower for a spiral staircase BTW.

Yes. It's just cut to size/angle like a concrete block. Some manufacturers will provide you with blocks made specifically for your radii.

 

https://becowallform.co.uk/wp-content/uploads/2015/03/building-a-curved-ICF-wall-with-Wallform-350x321.jpg

 

C