Where to buy a larger batch of firebrick?

[Per Nilsson 1967]

What kind of oven are you planning to build? I assume you've already found Forno Bravo and explored the forum there... What do you have in mind for the foundation?

Admittedly, the bricks are a major expense, but I'd say it's difficult to get it under a third of the total cost, depending on what kind of foundation and superstructure you make, and what level you place insulation and chimney on... My oven cost around 10000 SEK to build, and that's with the bricks being free to me. However, I bought calcium silicate board and ceramic blanket as insulation, which could have been done cheaper...

What do you need the blanket for?

 

[Dan_Johansson]

What do you need the blanket for?

It insulates the oven on the top side.. There are other ways, but none that are better..

 

[Per Nilsson 1967]

It insulates the oven on the top.. There are other ways, but none that are better..

Thank you! But, don't you think the oven retains enough heat without the felt? A fire blanket might be a cheaper alternative?

 

[Dan_Johansson]

Thank you! But, don't you think the oven retains heat well enough without a blanket? Perhaps a fire blanket is a cheaper alternative?

Depends on what you're using the oven for. If you're just baking pizza, you always have a fire going, so insulation is less important. If you're baking bread/cooking, you need to retain the heat, and then insulation is necessary. What's cheaper depends on what you can get. If you have a place that sells vermiculite in larger bags and you avoid shipping costs, it might be better. The fire blanket is probably too thin, but maybe in combination with stone wool. The disadvantage of stone wool is that the binder doesn't withstand high temperatures, so the insulation compresses over time. How that affects the insulating ability in the long run, no one knows...