Flex Air Duct allowed?

Clay White · 10-17-2007, 04:39 PM

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**Billy Stephens** · 10-17-2007, 06:04 PM

Clay

It's UGLY but I can't find anything that would prohibit it .

**Jim Luttrall** · 10-17-2007, 06:08 PM

If the separation wall between the house and garage puts the duct in the garage, then the duct is wrong. If the heater is "in the house" on the house side of the separation wall between the house and garage, then it would be OK.
From what I see around here, it would be wrong since the W/H closet door would not be an approved door between the house and garage, thus the separation wall would be the back wall of the W/H closet. That would also mean the OSB would violate the separation requirement of 1/2" gypsum, assuming you are on the IRC.

**Jerry McCarthy** · 10-17-2007, 06:20 PM

Clay
Just how do you know that's a flex air duct?

**Billy Stephens** · 10-17-2007, 06:22 PM

Originally Posted by Jim Luttrall

If the separation wall between the house and garage puts the duct in the garage, then the duct is wrong. If the heater is "in the house" on the house side of the separation wall between the house and garage, then it would be OK.
From what I see around here, it would be wrong since the W/H closet door would not be an approved door between the house and garage, thus the separation wall would be the back wall of the W/H closet.

Jim L,

IF the Left wall(duct) back wall both house walls.

Right Wall Garage.

Bring me up to speed on the door please

**Billy Stephens** · 10-17-2007, 07:26 PM

Originally Posted by Clay White

Rear of the closet is the master bathroom.
Right of the closet is garage space.
Left of the closet is exterior.

Clay,

So The DUCT goes outside.

**Jerry Peck** · 10-17-2007, 07:32 PM

Clay,

First this needs to be answered: What kind of door is it? All the door needs to be is solid core 1-3/8", i.e., just a regular old cheap 1-3/8" solid core door.

R309.1 Opening protection.

Openings from a private garage directly into a room used for sleeping purposes shall not be permitted. Other openings between the garage and residence shall be equipped with solid wood doors not less than 13/8 inches (35 mm) in thickness, solid or honeycomb core steel doors not less than 13/8 inches (35 mm) thick, or 20-minute fire-rated doors.

**Jim Luttrall** · 10-17-2007, 09:34 PM

What Jerry said.
The entire section of R309 deals with garages and carports.
The main theory here is "309.2 Separation required. The garage shall be separated from the residence and its attic area..." and then goes on into specifics.
In general, the common walls and ceiling have to have gypsum board on the garage side and proper doors on any openings through the separation wall.

**Jerry Peck** · 10-18-2007, 05:42 AM

Originally Posted by Jim Luttrall

In general, the common walls and ceiling have to have gypsum board on the garage side and proper doors on any openings through the separation wall.

To continue what Jim said ...

*IF* the door is one of the correct type doors, then the OSB ceiling is not a problem and neither is the duct.

*IF NOT* (if the door is not a correct type door), then *both* are problems.

**Billy Stephens** · 10-18-2007, 06:19 AM

Originally Posted by Jim Luttrall

From what I see around here, it would be wrong since the W/H closet door would not be an approved door between the house and garage, assuming you are on the IRC.

Originally Posted by Billy Stephens

Bring me up to speed on the door please

Originally Posted by Jerry Peck

R309.1 Opening protection.

Openings from a private garage directly into a room used for sleeping purposes shall not be permitted. Other openings between the garage and residence shall be equipped with solid wood doors not less than 13/8 inches (35 mm) in thickness, solid or honeycomb core steel doors not less than 13/8 inches (35 mm) thick, or 20-minute fire-rated doors.

Must be a lot of Hollow core doors in Texas . I pictured some (magical) special door based on combination of what wall is who? Appendix # ****

Thanks

buddy brault · 10-18-2007, 08:48 AM

Clay the door is the key as everbody says but if it is a solid door, looks like there may be some combustion air issues.

**Jerry Peck** · 10-18-2007, 12:25 PM

Originally Posted by buddy brault

Clay the door is the key as everbody says but if it is a solid door, looks like there may be some combustion air issues.

To expand on Buddy's "solid door" (not "solid core" door) statement above ...

*Even if* it is a "louvered door" (versus a "solid door") there are likely combustion issues.

In thinking about "the door" I 'thought right over' the combustion air issue (meaning I forgot about it

).