[Greenbuilding] air sealing a metal fireplace flue

[Clarke Olsen]

Ok, ok: plan B, a masonry chimney.
Clarke Olsen
clarkeolsendesign.com
373 route 203
Spencertown, NY 12165 
USA
518-392-4640
colsen at taconic.net




On Jan 21, 2014, at 5:25 PM, Alan Abrams <alan at abramsdesignbuild.com> wrote:

> the manfr is crystal clear on prohibiting any insulation in contact with the pipe.  the primary concern is air sealing.  the chimney chase itself can be insulated , without touching the pipe.
> 
> Alan Abrams
> certified professional building designer, AIBD
> certified passive house consultant, PHIUS
> certified passive house builder, PHIUS
> Abrams Design Build LLC
> sustainable design for intentional living
> cell     202-437-8583
> alan at abramsdesignbuild.com
> www.abramsdesignbuild.com
> 
> 
> On Tue, Jan 21, 2014 at 4:27 PM, Frank Tettemer <frank at livingsol.com> wrote:
> Hi all,
> 
> Kermit's point is well taken. Ask your Code enforcement officer.
> In addition, the other source to inquire with is the Chimney Manufacturer.  Each chimney maker has their own, fire-tested details that need to be followed precisely, in order to assure safety.
> 
> For example, many chimneys, including Selkirk, Excel, and Security all require NO Insulation of any kind to surround the exterior of the outer metal of the chimney.
> 
> The reason is that if there is added insulation, the temperature of the metal in the chimney parts will be increased by the existance of this additional insulation. This can cause the inner steel lining to be hotter than the design temperature, and cause metal fatigue and subsequent failure.  The manufacturers all must pass certain burn tests, to receive their safety sticker, and these tests are nearly always done with air movement allowed around the outside of the chimney.
> 
> Even that annoying area, where the chimney passes through the roof frame and sheathing, underneath the domed roof flashing area, usually must be insulation-free. Consult the installation manual of the brand and type of chimney you plan to use, before solidifying your plans.
> 
> Frank Tettemer
> Living Sol ~ Building and Design
> www.livingsol.com
> 
> Insulation in contact with the pipe is verboten.
> 
> *Flammable insulation* or all insulation?  Ask your Code enforcement officer.
> 
> Thank You Kindly,
> 
> Topher Belknap
> 
> -- 
> 
> 
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