Fire blocking around B vent

mathew stouffer · 01-08-2010, 08:37 AM

Does this B vent require fire blocking at both penetrations into the ceiling and attic? Or simply around the first penetration. The pics are poor at best and the room is thunderdome.

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**Jerry Peck** · 01-08-2010, 06:49 PM

Originally Posted by mathew stouffer

Does this B vent require fire blocking at both penetrations into the ceiling and attic?

From what I can tell from the photos, and your description "ceiling", the answer would be that both require proper fireblocking, and that does not mean insulation around it.

mathew stouffer · 01-08-2010, 07:20 PM

Yes I used the term ceiling lightly

Thanks Jerry

**Gunnar Alquist** · 01-08-2010, 07:24 PM

Hey Matthew,

Does that porcelain light fixture have a box, or is just hanging there?

**Jerry Peck** · 01-08-2010, 08:35 PM

Originally Posted by Gunnar Alquist

Hey Matthew,

Does that porcelain light fixture have a box, or is just hanging there?

Gunnar,

Good catch.

I just zoomed in on it and it is just hanging there by its wires, no box behind it.

But not to worry, there is a sprinkler head right behind it to put the fire out.

chris mcintyre · 01-08-2010, 09:06 PM

Originally Posted by Jerry Peck

But not to worry, there is a sprinkler head right behind it to put the fire out.

I thought that looked like a sprinkler head, how common is this?

mathew stouffer · 01-08-2010, 10:39 PM

Gunnar, good eye! I missed that.

Chris, all the larger homes in this area are required to be equipped with fire suppression systems. This place was around 8000 feet. Distance from the fire station, size, and location to wooded areas will determine whether or not a system is needed.