Clay tiles for thermal base?

[FFSDavid!]

Hi, as a complete novice and in the contemplation stage of building a pizza/bread oven I have so many questions.
First question is to do with the thermal base of the oven.
I have read lots of advice on the forum about perlcrete vs board but was wondering if flat clay roofing/Rosemary tiles would be as effective. There is a plentiful source of used tiles here.
My thoughts would be to have layers of these on top of a concrete slab then sand/fireclay bedding for floor bricks.
Any and all advice would be greatly appreciated,
Dave

[UtahBeehiver]

I would first download the free eplans from Forno Bravo and review the plans, the plans are a little dated but a good baseline.

Don't skimp on oven insulation, lack of insulation or wet insulation is one of the main reasons of poor oven performance, ideally a min 2" CaSi board under floor and 2" of ceramic blanket on the dome is the best but if budget is an issue, 4" 5 to 1 p/vcrete under floor and 4" of 8 to 10 to 1 p/vcrete over dome ( more labor involved but less expensive than high tech CaSi/ceramic blanket).

Fired ceramic clays, ie tiles, do not typically have good insulating value for insulation under the oven floor.

There is also a sticky under the Newbie Section called Treasure archives which shows some very well documented builds.

[FFSDavid!]

First time on a forum so not up to date with etiquette.

Thanks for that info. I’ll have a look at the download and previous posts.

"Fired ceramic clays, ie tiles, do not typically have good insulating value”

Oh well! Back to the drawing board for my insulated picnic Sporran.