Dogshark58 Build

[Bottler]

I had the same issue -you can buy ceramic blanket from Dineens in Co Laois - http://www.dineensales.com/Industria...aspx?P_CatID=7
They don't have boards so I ordered 50mm board from Pottery Pro UK and there was around £20 for delivery. They sell different sized boards on ebay and it was the cheapest option that I found for delivery to Dublin.
here's a sample of one of their listings: https://www.ebay.ie/itm/4-x-FIRE-RES...MAAOSww9VXh7Z6

[dogshark58]

Thanks for that. Just waiting on a reply from a potential supplier in Belfast who may have Ceramic fibre board. If that fails I'll go down the p / v concrete route.

[UtahBeehiver]

About twice the thickness of 5 to 1 p or vcrete vs CaSi board. That said, 6" p or vcrete is a good floor insulation number for most people's need.

[dogshark58]

If I go down the vermiculate / cement route, what thickness would I need to match the insulation of 100mm of ceramic fibre insulation board? Foamglas was being delivered from Belgium, £150 of product costing £185 for delivery!

[dogshark58]

Thanks for the replies. I'll check out the Foamglas safe in the knowledge that vermiculate / cement is always an option.

[UtahBeehiver]

You can also consider perlite or vermiculite/cement mix as an insulation for both under the floor and over the dome. It just takes more thickness to equate to high tech CaSi or ceramic blanket.

[Mongo]

Also is there any problem in laying two ceramic boards side by side if I can't get a single sheet of appropriate size.

Any help appreciated.

No issues piecing together boards side by side. Avoid placing small pieces on the edge of your insulated base.

[RGJ]

From all that I've read, there is a product called Foamglas (cellular glass insulation) that is available in the UK but not the US. It's by Corningware & shows up again and again in build forums based in the UK. Apparently it's a great product & not as expensive as CaSi board.

[dogshark58]