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Chimney "Framing" Questions

 
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Old 10-07-2019, 07:18 AM   #1
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Chimney "Framing" Questions


I'm planning my chimney build for my new construction. It will be wood burning, exposed from the first floor through the roof (cathedral ceiling). My question is, does the Mason have some options on framing the structure? Can he use wood for the framing then use stone veneer, or does he need to cinder block it, then add stone veneer??
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Old 10-07-2019, 09:28 AM   #2
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Re: Chimney "Framing" Questions


It all depends what you want.....an asset or a liability. If you want a fire trap liability,go with the wood .

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Old 10-08-2019, 06:41 PM   #3
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Re: Chimney "Framing" Questions


From the flue, unless it is a triple wall metal flue, code is generally 1" airspace 4" masonry wrap, from the slab to the cap.
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Old 10-09-2019, 10:09 PM   #4
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Re: Chimney "Framing" Questions


If it's a prefab unit, most today are double wall air cooled systems in which wood chases are built around and veneered in a number of different products.
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Old 10-10-2019, 07:07 AM   #5
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Re: Chimney "Framing" Questions


Quote:
Originally Posted by superseal View Post
If it's a prefab unit, most today are double wall air cooled systems in which wood chases are built around and veneered in a number of different products.
Thanks for the pictures. It sounds like wood is "acceptable" with the proper system. It does make me a bit nervous though using a wood box, maybe I'll look into metal studs and cement board, then veneer over that...
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Old 10-10-2019, 09:16 AM   #6
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Re: Chimney "Framing" Questions


Is there no longer anything sacred in the construction arena in the United States ? Our houses are wrapped with plastic siding and our chimneys are made of wood; all in the eternal quest for the cheaper route.

When will our wood stoves be made of wood ? Or is that coming now that we have fire resistant plywood .
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Old 10-11-2019, 03:45 AM   #7
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Re: Chimney "Framing" Questions


The colder the climate zone the more you'll increase fireplace efficiency with the chimney INSIDE the envelope, through added heat and thermal mass in the cooling and heating seasons....

An external chimney use less of the 200 $/sq.ft. floor plan...

Avoid a raised hearth as the space wasting Hack that it is. Maybe in a kitchen Fire place/oven.

A rafter frame roof and a ridge board might cause some issues...

Don't for get the out side air supply for the fire, and a gas pipe for an lighter and or gas log in the future....And the ash pit/foundation.

As indoor air pollution issues become more known, look to grade level furnace plumbing to be barred as hazards to the home dwellers long term health, roof mounted high efficiency exhaust pipes...

Earth Quake zones will need some rebar and some engineering especially two story homes and high pitch roofs.

If you insist on a Faux chimney made of wood structure, don't forget the fire blocking at every floor/ceiling level it passes by/through.
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Old 10-19-2019, 09:52 PM   #8
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Re: Chimney "Framing" Questions


If it burns wood you need a footing and a chimney outta masonry. For it to be done right.

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