Dogshark58 Build

[dogshark58]

[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.

[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.

[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.

[dogshark58]

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

[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!

[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]

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.

[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 I'll check it out.

I have found a company in Co Wicklow that sells Ceramic Fibre Board. I just want to check the compressive strength.

IROCO LTD.
Block 3, Newtown Business Park
Newtown Mt Kennedy, Co Wicklow, Ireland

Location: 53.0852N, 6.1058W.

Phone: +353 1 281 0960
Text: +353 87 225 1677
Fax: +353 1 281 0964

Open Mon-Thu, 8-1 & 2-5.
CLOSED Fri, Sat, Sun and holidays.

They have Ceramic Fibre board in sheets 1.2m x 1.0m, the thickness available is 10mm, 13mm and 20mm. I want to have a 100mm (4") thickness and would prefer 50mm thick sheets.

[UtahBeehiver]

50 mm (2" for us Yanks) is min recommended floor insulation thickness. You can accomplish with one layer or two, just stagger seams. Min compressive strength should be around 75 PSI or 517 kpa at 5% compression.

[dogshark58]

Thanks UtahBeehiver your help is much appreciated.

A bit more success on local suppliers of ceraboard, however waiting to see the spec. Maximum thickness I can get will be 20mm sheets so thinking of about 80mm thickness. I note your suggestion of layering the sheets on different axis to stagger the joins.

I'll post the supplier details once I know it is of suitable quality.

Thanks again for your excellent advice

[dogshark58]

I have the space to build either dimensions. I would be interested in the pros / cons of those who have completed ovens as to what they would recommend. I see some comments about 42" being only worth heating if cooking for large numbers.

I expect on most occasions I will be cooking no more than 10 pizzas. I may attempt to cook bread at a later time.

[JRPizza]

Split the difference like many of us have and build an 39 incher!

[RandyJ]

You Can do any size you want. It doesn't have to be just 36 or 42. I did mine at 40" and liked it a lot. Look at your space and see what fits best.

Randy

[eirebuild]

Hi DogShark,
Just about to buy some Insulation baord for my own build based in Wicklow.

Who have you decided to go with in the end?

Thanks UtahBeehiver your help is much appreciated.

A bit more success on local suppliers of ceraboard, however waiting to see the spec. Maximum thickness I can get will be 20mm sheets so thinking of about 80mm thickness. I note your suggestion of layering the sheets on different axis to stagger the joins.

I'll post the supplier details once I know it is of suitable quality.

Thanks again for your excellent advice

[dogshark58]

I have been unable to get adequate confirmation of the compressive strength of locally available Ceramic Fibre board. Therefore I am resigned to using a Cement / Vermiculite mix as the base. I have noted the advice on mixing cement / vermiculite.

I have found vermiculite available from a local building supplier which is described as ...

Exfoliated vermiculite is inert, non combustible, light, clean and has a high insulation value. Used in a variety of different applications due to its many properties it can be used for loft insulation, packaging, chimney lining and high temperature insulation.

I assume this is suitable.