insulate new chase for f/p flu

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Old 01-15-10, 12:49 PM
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Question insulate new chase for f/p flu

We are installing a woodburning fireplace box on an exterior wall of the house on a side porch and building a "room" for the box which will need to be insulated and sealed. Also the chase for the flu must be built and extend at least 10 ft. above the roof line of the porch to reach past the top of the upper floor roof. How do you build a chase around a pipe and then insulate it? What type of insulation do you use? Is it applied from the outside? What type of siding must be used?
 
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Old 01-15-10, 05:36 PM
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Welcome to the forums! Why do you want to insulate the chase? You won't be keeping warm air in nor cold air out. The chase is just decoration.
 
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Old 01-16-10, 02:56 PM
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instructions

Thanks for the response. Heatilator and all other installation procedures we've checked say we have to insulate the chase to keep the flu warm so that smoke doesn't back up into the home. We're already building a box around the "firebox" which actually sits outside the house, so that the space will now be within the envelope of the house and keep the fireplace warmer so that it will draw correctly. Never done this before, just looking everywhere I can for instruction and we're told to insulate but not how or with what.
 
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