Michael Thomas
05-12-2011, 02:22 PM
Second-floor of single-family residence would attic immediately above.
Owner has installed a "whole house" exhaust system for the second-floor consisting of a wooden "plenum"containing an exhaust fan and connected intake lines running from a return grill in each room and exhausting to the interior of the attic (where, hopefully is in turn exhausting through passive vents installed or the ridge).
1) A violation of the rules against combustible ductwork used for environmental air?
2) No different from a joists space headed off to install a conventional whole-house ceiling exhaust fan?
3) "Aw, come on Mike. Who gives a ****? Let it go and move on."?
Opinions (preferably documented by a code or other reference)?
Owner has installed a "whole house" exhaust system for the second-floor consisting of a wooden "plenum"containing an exhaust fan and connected intake lines running from a return grill in each room and exhausting to the interior of the attic (where, hopefully is in turn exhausting through passive vents installed or the ridge).
1) A violation of the rules against combustible ductwork used for environmental air?
2) No different from a joists space headed off to install a conventional whole-house ceiling exhaust fan?
3) "Aw, come on Mike. Who gives a ****? Let it go and move on."?
Opinions (preferably documented by a code or other reference)?