Looking For Advice Re Oven Floor Insulation

[Fed]

hi guys,
im new to the forum but im being reading a lot lately looking for tips and learning different methods to build ovens..

i already started building my oven and need some advice for the insulation of the floor..

my first idea was to just use a layer of glass and rock sea salt and on top of it another layer of refractory mortar..
then on top of it would place the alumina bricks...

although now i bought the ceramic fiber blankets to insulate the dome and since i have spare i was wondering if i should also add one layer of ceramic fiber on top of the rock sea salt... to add extra insulation...

so basically my question is if i should just go with
glass/rock sea salt/refractory mortar/alumina bricks

or
glass/rock sea salt/ ceramic/refractory mortar/alumina bricks.

what would you recommend?

thanks in advance for your help.
Fed.

[stonecutter]

Re: Looking For Advice Re Oven Floor Insulation

hi guys,
im new to the forum but im being reading a lot lately looking for tips and learning different methods to build ovens..

i already started building my oven and need some advice for the insulation of the floor..

my first idea was to just use a layer of glass and rock sea salt and on top of it another layer of refractory mortar..
then on top of it would place the alumina bricks...

although now i bought the ceramic fiber blankets to insulate the dome and since i have spare i was wondering if i should also add one layer of ceramic fiber on top of the rock sea salt... to add extra insulation...

so basically my question is if i should just go with
glass/rock sea salt/refractory mortar/alumina bricks

or
glass/rock sea salt/ ceramic/refractory mortar/alumina bricks.

what would you recommend?

thanks in advance for your help.
Fed.

Don't put salt anywhere in or near concrete. It is corrosive and will do little as insulation.

Glass is not a great insulator either...but it's better than putting the brick in contact with the concrete slab.

Go the standard perlite/vermiculite concrete mix or ceramic board.

[Fed]

Re: Looking For Advice Re Oven Floor Insulation

Don't put salt anywhere in or near concrete. It is corrosive and will do little as insulation.

Glass is not a great insulator either...but it's better than putting the brick in contact with the concrete slab.

Go the standard perlite/vermiculite concrete mix or ceramic board.

thanks for your reply.

the problem i have is that materials are really hard to find down here..
i had to order most of the materials from manila..
so i cannot get perlite/vermiculite or ceramic board... although i have the ceramic blanket..

should i use the ceramic blanket on top of the glass then?
thanks.
Fed.

[stonecutter]

Re: Looking For Advice Re Oven Floor Insulation

See if you can locate materials that davids suggested, in the other thread were you asked this same question.