firebrick arch vent question

[dmun]

Re: firebrick arch vent question

I don't think the relative position of the two arches is critical in this regard: if you want to avoid smoke on startup, you need a taller chimney, or a draft door to channel the smoke up the chimney. Once the fire's going, any sort of chimney will do, there's very little smoke at full heat.

[mrgweeto]

Getting ready for the Spring thaw in sunny CT to start the oven. Have been looking at several projects that have had pix from start to finish. The thing that I noticed in one was that the inside arch was at the same level as the outside arch which allowed the smoke to partially exit outside the front opening as was evident by the smoke stain on outside of the arch above the door opening. Shouldn't the inside arch be slightly higher than the outside arch so the smoke in essence will bank off the back of the front arch and billow up the chimmny? Sorry for the long question and I hope it is understandable.
G