Foamglas

[adm]

OK guys, next question....

I am a techie by persuasion, so while researching oven construction I am looking at a whole load of materials that may not be optimum...

Anyway. I came across "Foamglas" today.

www.foamglas.co.uk

Now to my untrained eye, this looks ideal for insulation underneath the oven floor. I was thinking instead of using Thermalite blocks or vermicrete and Ceramic board that a thick layer of this stuff might be ideal.

Unlike Thermalite (and presumably ceramic fibre board) it cannot wick moisture which must be a good thing. It's also extremely strong for load bearing purposes and has great thermal insulation properties.

Does anybody know about this stuff? Especially how the thermal insulation characteristics compare to Thermalite and/or CF board? I have no idea how much it costs, but it couldn't be a bank breaker for the amount needed to insulate an oven floor so might be worth consideration.

[bookemdanno]

Interesting, but i'd still call them to speak to a tekky at Foamgla about compressive strength and a working temperature range. Many straightforward building products cannot be guaranteed to work within the temp range that WFO can put out.

[adm]

I messaged their tech support and they are going to send me a full pack of technical data. They did say that melting point is well over 1000C. I don't know about compressive strength at temperature yet though.

Might be worth consideration for replacement of Thermalite blocks in the base I am planning though. I particularly like the point that it is totally unaffected by moisture.

[adm]

Right....here's the spec sheet for the Foamglas slabs. Does anybody know enough about compressive strengths and thermal conductivity to say whether this stuff would be useful in an oven base?



I was thinking a 100 or 150mm concrete slab, with a 100mm layer of foamglass slabs on top of it, followed by either a layer of the Ceramic Fibre board, or maybe just the firebricks for the hearth itself if it looks feasible.

Any thoughts?

[h12rpo]

No idea about all those tables/figures, but we know that celcon ( thermolite) blocks are reliable both in compressive strength asnd insulating properties, so could you get figures for them and compare ?

[adm]

:-) I'm looking for those right now....

I have sent some questions to the Foamglas people as well and will see what I get back from them....