Hello-
I am new to the forum. We are building a home in GA. I bought a gas fireplace which will be installed in the middle wall on the first floor of the house. We did construct a chimney but our architect never considered building a frame on the second floor for chimney flue to pass. Now making one will ruin the design of the second floor. I am thinking of running the chimney flue vent pipe instead from the floor joist to the outside of the house ( see the attached diagram I hand-sketched). There will be 90 degrees turn in this proposed plan.
Is that possible or will that be a code violation or can I use a double-wall pipe? See attached picture of fireplace and vent I got from fireplace manufacturer. Not the vent on this fireplace only has a single hole, unlike some fireplaces that have 2 holes.
Any advice would be greatly welcomed.
![Venting Through Floor Joist Out to Wall Venting Through Floor Joist Out to Wall](https://www.hearth.com/talk/data/attachments/271/271115-e6052bafaf333e57697f0f35f107ed5a.jpg)
I am new to the forum. We are building a home in GA. I bought a gas fireplace which will be installed in the middle wall on the first floor of the house. We did construct a chimney but our architect never considered building a frame on the second floor for chimney flue to pass. Now making one will ruin the design of the second floor. I am thinking of running the chimney flue vent pipe instead from the floor joist to the outside of the house ( see the attached diagram I hand-sketched). There will be 90 degrees turn in this proposed plan.
Is that possible or will that be a code violation or can I use a double-wall pipe? See attached picture of fireplace and vent I got from fireplace manufacturer. Not the vent on this fireplace only has a single hole, unlike some fireplaces that have 2 holes.
Any advice would be greatly welcomed.
![PHOTO-2021-01-02-23-23-43.jpg PHOTO-2021-01-02-23-23-43.jpg](https://www.hearth.com/talk/data/attachments/271/271113-602edfade283f04bf8c39024dc7801cc.jpg)
![PHOTO-2021-01-02-23-24-04.jpg PHOTO-2021-01-02-23-24-04.jpg](https://www.hearth.com/talk/data/attachments/271/271114-6b9c2282c8732d7ed50e52ef32e4d569.jpg)
![Venting Through Floor Joist Out to Wall Venting Through Floor Joist Out to Wall](https://www.hearth.com/talk/data/attachments/271/271115-e6052bafaf333e57697f0f35f107ed5a.jpg)