Round roof

[NewEnglandNewb]

I’m still in the planning stages and am trying to come up with a game plan for an enclosure. I live in southern New England (USA), so rain and freeze/thaw are a thing I will have to deal with. My planned location prohibits building a permanent structure over the oven. I really like the idea of the structure being round, since the oven is also round.

I found the attached image on Facebook with the #fornobravo. I like this look and am wondering if anyone has thoughts on what the structure under that roof looks like?

Does anyone have any suggestions on building techniques or material suggestions on achieving a round roof for my enclosure? I’m considering galvanized steel studs for the sides and something like an octagonal roof structure also from steel studs, building up the shape with a bunch of perlcrete, or even concrete/block walls with roof structure on top of that. For roof materials, I’m considering slate, asphalt shingles, cedar shakes, or even precast concrete segments that are sealed like a concrete countertop. I have read through a bunch of build threads, but haven’t come across one that has a round enclosure… can anyone point me towards one if I missed it?

Thanks,
Josh

[jhonson]

That round design sounds awesome! For a round roof, you might want to consider using a steel frame with curved trusses—like a geodesic dome. It’s sturdy and can handle weather changes well. Perlcrete is a solid choice for covering it; it’s lightweight and insulates nicely. Slate or cedar shakes would give you a nice finish and durability. As for finding similar builds, try checking out forums or DIY sites for custom pizza oven enclosures. You might find some similar round designs that could inspire you!

[RandyJ]

That is definitely a cool idea. It may be a bit tricky figuring out just exactly how to build that. You will also need to do a squril tail chimney to get it to exit the top center of the roof. I would say look at drawings of how they use to frame castle towers. I believe it is usually a lot of rafters meeting at the top. After that you will have to see what you will need to do for a roofing material. This is definitely a doable design but will require some out of the box thinking..

Randy

[NewEnglandNewb]

Thanks for feedback guys.

I’m leaning towards using a lot of galvanized studs as rafters so there are fairly small segments, using durock or Hardi backer in pie shaped segments as the sheathing, covering that with a waterproofing membrane like kerdi or red guard, then installing slate shingles with thinset so I’m not poking any holes in the sheathing.

The other idea I was playing with is laying fiberglass over the galvanized studs and thinsetting slate shingles over that. I have played with fiberglass on a few projects in the past and am comfortable working with it. It is good enough to keep water out of boats, should work for a WFO roof :-)

I am planning a squirrel tail chimney. That is a topic probably worthy of another thread. My plan there is to do that a little differently than the few threads on this forum I have seen. I want to have insulation over the dome in the area where the chimney diverts back over the dome (perlcrete, calcil board, something else?) in addition to ceramic blanket over the entire thing. I want to make sure I have don’t lose any extra heat for retained heat cooking.