Review this insulating board Plz

[Gulf]

Thank you for your reply. The draining holes part really makes sense, great advice!

That is great advice. That plus elevating the insulation would be invaluable protection from water.

[Mirrven]

Ceraboard has the same composition that our forum sponsor Forno Bravo sells. It is Alumina Silicate board. This should be fine, the 100 series,if cheaper, has operating temp rated well over what you will see in floor temps. If you budget can handle it a bare min is 2" but 3 or 4" would be ideal. If this seller has this board, it is most likely they have access to ceramic blanket for your dome as well.

So relaxing to hear someone expert confirm the composition, I already bought the Ceramic Blanket online from a guy that actually didn't know very much about the product he was selling, how ironic is that! i live in a country where most shops know nothing about their products except for the price tag, Job requirements here are ridiculously low, people end up working in fields they have no relation to whatsoever, i don't blame them, as opportunities are not given so widely. Thank you

[Mirrven]

It certainly looks like either Ceraboard grade will do the job for the base insulation of your oven. Especially when in the applications it notes for use in kiln lining and for High temperature insulation. Because it doesn't mention water absorption tendency/potential in the specs, I would definitely look at making sure you create a water barrier around the base (and drill a few drain holes in the slab below) to keep the Ceraboard from absorbing water through seams around the perimeter of the oven base (and to help it drain/vent if it does get damp).

Note: I haven't used this product, so this is just my guess on its insulation value for your build based on the specs you posted

Thank you for your reply. The draining holes part really makes sense, great advice!

[UtahBeehiver]

Ceraboard has the same composition that our forum sponsor Forno Bravo sells. It is Alumina Silicate board. This should be fine, the 100 series,if cheaper, has operating temp rated well over what you will see in floor temps. If you budget can handle it a bare min is 2" but 3 or 4" would be ideal. If this seller has this board, it is most likely they have access to ceramic blanket for your dome as well.

[SableSprings]

It certainly looks like either Ceraboard grade will do the job for the base insulation of your oven. Especially when in the applications it notes for use in kiln lining and for High temperature insulation. Because it doesn't mention water absorption tendency/potential in the specs, I would definitely look at making sure you create a water barrier around the base (and drill a few drain holes in the slab below) to keep the Ceraboard from absorbing water through seams around the perimeter of the oven base (and to help it drain/vent if it does get damp).

Note: I haven't used this product, so this is just my guess on its insulation value for your build based on the specs you posted

[Mirrven]

After not finding any of the floor insulating materials, i run into this down the street!! i'm somehow surprised yet not sure if this is the right Ceramic Board to use... here is the description text:

Ceraboard is a refractory fibre board supplied in panels of standard thicknesses made from a slurry of refractory fibres and binders which have a low organic content.
The combination of different refractory fibres, inorganic and organic binders in different proportions allows types of boards to be made suitable for different use temperatures.
In some types of heating equipment the emission of fumes, which can occur when binders burn out of the board, can be easily eliminated.

CLASSIFICATION TEMPERATURE &
GRADES AVAILABLE
Ceraboard 100 : 1260°C
Ceraboard 115 : 1400°C
The maximum continuous use temperature depends on the application. In case of doubt, refer to your local Morgan Thermal Ceramics distributor for advice.

FEATURES
High temperature stability
Low thermal conductivity
Low heat storage
Rigidity and high cohesive strength allow machiningand cutting
Resistant to thermal shock
Good erosion resistance
Can be used in direct contact with flame
Easy application

TYPE
Rigid panel based on refractory fibres.
THICKNESS TOLERANCES
Less than 10mm: +/- 0.5mm (except for Ceraboard 100: +/- 1mm)
From 10mm to 20mm: +/- 1mm
From 25mm to 50mm: +/- 2mm
More than 50mm: +/- 4mm

APPLICATIONS
These versatile boards can be used where a rigid, self-supporting and insulating product is required which also has good resistance to
physical damage.
Ceramic industry (kiln linings & kiln car insulation)
Glass industry
Ducts insulation
General thermal barriers
High temperature insulation