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?'s about building a chimney inside

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by Fuel, Feb 28, 2009.

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  1. Fuel

    Fuel New Member

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    I have found a way that i can build a chimney chase through my house by going through the back of one of the closets in the house and then out through the roof above that. My main question is do I have to use insulated pipe the whole way or is there a cheaper pipe I can use in the chase and then go to the insulated pipe when i go through the roof.

    thanks

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  2. LLigetfa

    LLigetfa Minister of Fire

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    Cheaper indoor doublewall pipe needs much more clearances than insulated SS does.
  3. fossil

    fossil Accidental Moderator Staff Member

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    I'm sure I'll be corrected if I'm wrong, but the way I understand it, you can use stovepipe (either single-wall or double-wall) from the appliance flue collar to the point at which it first penetrates the structure...be that a ceiling or a wall. At that point, you need to install the appropriate through-wall (ceiling) transition fixture (support box) and switch to Class A chimney pipe for the remainder of the run to daylight. In any case, that's the way I'd plan to build it. More expensive? Sure is. Safer? You bet. Rick
  4. Fuel

    Fuel New Member

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    okay, that's what i thought

    thanks
  5. Darl Bundren

    Darl Bundren Member

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    For the class A that runs inside the house, you might buy galvanized instead of stainless as it is more affordable. I used Duratech, and the clearances are the same for the galvanized and stainless. Good luck with the install.
  6. fossil

    fossil Accidental Moderator Staff Member

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    ^ Fer sure! Heck, even my exposed runs of chimney above the roofs are galvanized outside pipe (Simpson Dura-Vent). Not nearly as pretty as stainless, but who's looking? It's the stainless inside that counts...and the insulation. Rick
  7. dougand3

    dougand3 Minister of Fire

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    Check your big box stores. Around here, Lowes sells Class A SS chimney for~$23/foot. Price is roughly 1/2 of the stove dealer.
  8. Darl Bundren

    Darl Bundren Member

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    Shop around online, some, too--I got much better prices online than locally, and while I'd like to support local businesses, I don't want to pay double for the same product.
  9. begreen

    begreen Mooderator Staff Member

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    This is not an area to sit on the wallet. Given the temps that this pipe can and may see, you'll need to do this safely and without compromise. You need to use class A pipe as soon as the pipe has penetrated a floor. Double-wall connector pipe should not be enclosed. It must be class A pipe and clearances honored at all points.
  10. 86turbodsl

    86turbodsl New Member

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    One note: Stainless is MUCH more durable than mild steel, particularly at high temps. It's much more likely to survive if you ever get a chimney fire, God forbid.
  11. Fuel

    Fuel New Member

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    Ok guys, I will shop around and go insulated the whole way
    thanks
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