There are a few cracks (and they get a lot bigger when the oven is hot), and each year the children make a few repairs with clay (the white you can see above is some of their modelling clay rather than what's in the sib soil here that we built it from). Bit it's needed no matentance other than that.
I do get the children to light a few fires in it in winter, and when we start to use it in spring I never do a big firing straight away, instead I'll do a few smaller fires first.
It's looking very much like it has a few good years in it left yet as well.
Anyone else built an oven from cob? How long did yours last?










