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-   -   HVAC duct through a fire rated wall (http://www.diychatroom.com/f19/hvac-duct-through-fire-rated-wall-105974/)

elmaur 05-30-2011 01:58 AM

HVAC duct through a fire rated wall
 
I converted the rear section of the garage into a laundry room with a wall newly constructed to divide the laundry from the rest of the garage. This wall needs to be a fire rated wall. I am required to put HVAC register in the laundry since it will be considered habitable space. The air handler is in the garage very close to this wall. It would be a simple matter to run a duct from the air handler through this wall into the laundry. Can I put the duct through the wall and still maintain the fire rating? Any suggestions what I would do if I cannot put a duct through this wall?

Ron6519 05-30-2011 08:05 AM

Quote:

Originally Posted by elmaur (Post 657510)
I converted the rear section of the garage into a laundry room with a wall newly constructed to divide the laundry from the rest of the garage. This wall needs to be a fire rated wall. I am required to put HVAC register in the laundry since it will be considered habitable space. The air handler is in the garage very close to this wall. It would be a simple matter to run a duct from the air handler through this wall into the laundry. Can I put the duct through the wall and still maintain the fire rating? Any suggestions what I would do if I cannot put a duct through this wall?

Have you contacted your local building dept? They should be able to guide you so as to comply with the local regulations.
Update your profile and put in a locale.
Ron

elmaur 05-30-2011 01:22 PM

When I submitted my plans as the homeowner for a building permit indicating the HVAC duct through this wall the only comment the examiner made was that the duct had to be 26 gauge with R8 insulation. I think it is possible he overlooked the issue of the fire rating. I will contact him tomorrow. I think he is out barbecuing today.


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