What kind of chimney for an energy-efficient home?
The recent discussion on masonry heaters in super-insulated homes is great, and Martin’s “farewell to the chimney” post is a classic, but I have a question that I don’t think has yet been covered here.
I am designing a well-insulated home that will require a modest amount of Btu input that I want to provide with a modest woodstove. What is the best type of chimney to use, masonry or insulated stovepipe? (Or some other option I’m not specifying.)
A masonry chimney would have cheaper materials but higher labor cost, would take up more space and create more thermal and air barrier issues. The main reason I am considering it is for durability.
An insulated stovepipe (like Metalbestos) would be more expensive in materials, but very quick to install, and simpler to detail in terns of air barrier and moisture. I am inclined to go in this direction except for a nagging sense that masonry would be more durable over time.
I suppose however, that I’m likely to be lining a masonry chimney with stainless steel, and that can’t be any more or less durable than the stovepipe (?).
Anyway, I would appreciate input on how to best build a chimney for this application.
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