Jump to content

B-vent spacing to roof


msteger
 Share

Recommended Posts

I ran across this B-type metal vent today connected to an LP stove. Due to the steep roof pitch, I could not get closer to get an actual measurement, but it appeared to be approx. 3'~3.5' between the top of the B-type vent and the adjacent ridge. Horizontally, the top of the vent was just a few inches above the ridge shingles. Estimating just over a 12/12 pitch, I'd expect to see a 5' spacing b/w these two. Am I correct?

See the attached photo.

Due to the LP service being off, I couldn't fully test the LP stove, so I recommended service by a qualified technician.

Thanks.

Image Insert:

2008930165417_DSCF0015.jpg

60.16 KB

Link to comment
Share on other sites

Yeah, it looked to be a little over a 45 deg angle, so that is why I guessed about a 14/12 pitch. That is why I figured it should be 5', not the 3~3.5'.

I know there are lateral spacing requirements (like b/w a metal B-vent and a dormer side wall), but I am thinking the height requirement of the vent itself when comparing it to the roof pitch addresses this horizontal spacing issue (as long as it is only a roof, and not a dormer near it). So, was I correct to say the spacing is a little too close?

Link to comment
Share on other sites

I know there are lateral spacing requirements (like b/w a metal B-vent and a dormer side wall), but I am thinking the height requirement of the vent itself when comparing it to the roof pitch addresses this horizontal spacing issue (as long as it is only a roof, and not a dormer near it). So, was I correct to say the spacing is a little too close

I don't quite understand the spacing question. Spacing would be between a vertical wall and the vent. It looks like the only thing that applies here is the vent height requirement above the roof.

Link to comment
Share on other sites

I guess that is my question, Brandon. Since there is no sidewall (like an adjacent dormer) present, the horizontal spacing requirement to the roof doesn't come into play here. We are only talking about total height of the vent above the roof (where it passes through). The calculation of the pitch of the roof is what determines if the vent is tall enough (and in reality, far enough horizontally) from the adjacent roof ridge. That was my real question..sorry if I made it more confusing than it needed to be.

Thanks.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...