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Fireplace doors and dampers

TheCommish

SAWHORSE
Joined
Sep 27, 2011
Messages
2,180
Location
Charlton Ma
Section 402.4.3 of the 2009 IECC requires new wood burning fire places to have gasket door and outside combustion air.

Several mason have asked me if a Lyemance chimney top damper instead,

http://www.chimneydampersource.com/lyemancedamper.htm

There are several other similar “energy effect” dampers available

While the 2012 IECC sections 402.4.2 allows tight fitting flue dampers.

Discussion;

1) Is a chimney top damper a tight fitting flue damper?

2) Would those that are enforcing the 2009 IECC allow the top damper

3) If one was using a top damper have there been problems with warm moist air condensing in the chimney flue?

4) Other comments…

Curtis Meskus, CBO

Town of Charlton

Building Commissioner

Zoning Enforcement Officer

Code compliance and inspections, leads to non-events
 
1- Is a chimney top damper a tight fitting flue damper?

Regardless if it is or not, it is NOT a gasketed door as required.

2- Would those that are enforcing the 2009 IECC allow the top damper

In lieu of gasketed doors? NO

3- No

mj
 
thankd for moving to the correct place, I inteded it to be in eneergy code not electrical, my fat fingers don't help my spelling or clicking
 
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