I have a two year old WFO than I did stone on the outside of the dome which I now know not to do. The heat caused it to crack and water keeps my vermiculite soaked now, so I have to figure out which way to go to fix. One kink in the deal is that the base of my oven has a rounded back so it make building something square on top of it a little tricky. I was thinking about going one of two ways, either doing a stucco cover on what I have there now or pouring a square concrete ledge around the top and building off of that (after some serious reinforcing of course). Would appreciate any input. I would hate to build a freestanding structure to cover it just because of aesthetics, but????? If I do stucco is there a link on here on what will work? Picture of it below.