I have come across this site totally by accident very helpful were do you get the insulation from I have most of the fire bricks im using Storage heater bricks hope this will be ok as anyone used the fire cermente which comes in bags?
I don't think there going to be any good I'm afraid. There concrete so I don't think they'd handle the heat too well would cracking and Spall. you would be better looking for some old solid red bricks they would do your floor and dome or storage heater bricks
They might be OK for a while or they may do the job but it's the repeated heating, cooling cycle that would make them fail. For me it would be to bigger risk to take for them to fail 6 months down the line
I'm new to the Forum, but have been thinking about building a wood fired oven for some time, and the information on the Forum is really helpful.
Whilst I understand that the risk of ovens failing can be avoided by using fire-bricks, I have a supply of pavers (the type used on driveways) which are very hard and I think I've read that they may have been used before in parts of bread ovens. It also will keep down costs.
Does anyone have any experience of using pavers in wood fired ovens, or possibly even seeing how they end up after being placed in an operating wood oven at high temperature?
I don't want to build my oven with pavers, only to find its been done before and failed. Or is this an experiment worth trying?
Any ideas, please?
Yes, you can certainly use them, but there’s no guarantee that they won’t fail. Many pavers and bricks can work adequately for the dome. However, as none of them are designed specifically for higher temperature applications, they may not work. You need to know the clay body composition and this information is probably not available to you. The bricks or pavers require a higher degree of thermal shock resistance and this can be achieved by using an open bodied clay, high in alumina and low in iron. This means the lighter coloured bricks or pavers are more likely to be suitable, but again no guarantees.Years ago, in Australia some creamy coloured house bricks were found to be suitable for kilns (fired to stoneware temperatures of up to 1300C). We rushed out to get some because they were cheap, being designed at a price to build houses. A number of builders in the UK have used the bricks from night storage heaters and found them suitable, but again they have not been designed for the higher temperatures we use, so no guarantees. Some may work, others may fail. Because the oven floor takes a greater beating you are less likely to have success for the floor rather than the dome, so proper firebrick for the floor is prudent.