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New Construction Question - Roof Venting

 
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Old 05-24-2016, 01:35 PM   #1
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New Construction Question - Roof Venting


I used to be a framer so forgive my ignorance if such arises.

In new construction I'm seeing a lot of roof hawk vents (like 13 on the back side of the new homes) and very little continuous ridge venting. What are some of the reasons why so many homes do not use continuous ridge venting?
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Old 05-24-2016, 02:48 PM   #2
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Re: New Construction Question - Roof Venting


I have no answer . . . however I've been seeing the same thing here in West Michigan. Looks terrible. I can't imagine there's any kind of significant savings using the roof vents.

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Old 05-24-2016, 06:34 PM   #3
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Re: New Construction Question - Roof Venting


I don't see a good reason, it's a math thing. Maybe builder has had a bad experience with blow off ridge caps.
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Old 05-24-2016, 06:38 PM   #4
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Re: New Construction Question - Roof Venting


Pods are cheaper and vent better, and some of the older ridge vents were prone to leaking.
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Old 05-24-2016, 07:04 PM   #5
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Re: New Construction Question - Roof Venting


i was gonna say a ridge vent is probably more likely to leak
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Old 05-24-2016, 09:23 PM   #6
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Re: New Construction Question - Roof Venting


Its ugly as sin if you ask me and while the pods do probably provide more NFA in that comparison, I have also seen those things leak if the rain is right.
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Old 05-25-2016, 08:00 PM   #7
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Re: New Construction Question - Roof Venting


They are cheaper.
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Old 05-25-2016, 08:02 PM   #8
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Re: New Construction Question - Roof Venting


I have only ever once seen ridge vent leak. No cap was run under the edge. Fixed probably literally 1000+ leaky pot vents though
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Old 05-25-2016, 09:29 PM   #9
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Re: New Construction Question - Roof Venting


I've never seen a ridge vent leak, we never use the pods. The only issue I've seen is guys using to short a nail through the ridge cap.


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Old 05-28-2016, 08:00 AM   #10
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Re: New Construction Question - Roof Venting


Nothing wrong with ridge vent. Leaks = poor installation in most cases.

Low bid gets the job in new construction and ventilation is often not well thought out. Most common on new construction is a square low profile vent (aka turtle). One of these turtles is only enough for about 150 sq ft of attic and most houses have around half of what they need.

We also see larger and larger houses being built on smaller lots. When this happens house tend to be more square in shape and thus have a more pyramid shaped roof. Plenty of hips but few ridge for vents.
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Old 05-29-2016, 07:28 AM   #11
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Re: New Construction Question - Roof Venting


And just think, we are doing roof decks with spray foam underside, and no vents.

The trend nationally seems to be the MacMansion style high pitch roofs will go away, especially since the insurance costs will kill them off eventually.
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Old 05-30-2016, 08:27 AM   #12
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Re: New Construction Question - Roof Venting


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And just think, we are doing roof decks with spray foam underside, and no vents.

The trend nationally seems to be the MacMansion style high pitch roofs will go away, especially since the insurance costs will kill them off eventually.
Nothing wrong with unvented assemblies. At the higher pitch, that thing is cooling off really well to outside and with the SPF on them, no moisture is migrating to the sheathing.
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Old 05-30-2016, 08:36 AM   #13
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Re: New Construction Question - Roof Venting


Nothing gives me greater pleasure then killing traditional thinking that there is but one way to build anything.
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Old 05-30-2016, 08:48 AM   #14
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Re: New Construction Question - Roof Venting


Quote:
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Nothing gives me greater pleasure then killing traditional thinking that there is but one way to build anything.
I wish you were closer to me to build my ICF dream house.
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Old 05-30-2016, 02:32 PM   #15
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Re: New Construction Question - Roof Venting


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I have only ever once seen ridge vent leak. No cap was run under the edge. Fixed probably literally 1000+ leaky pot vents though
I second that. Leaks are few and far between in ridge vent and pods suck. And they are ugly and it looks like crap. I'm going to go with D it's cheaper and E very few builders/roofers/construction people know anything about proper attic ventilation. They don't even think twice about it.
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Old 05-30-2016, 02:33 PM   #16
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Re: New Construction Question - Roof Venting


Dfw roofing is your office in garland on walnut or forest?
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Old 05-31-2016, 06:09 PM   #17
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Re: New Construction Question - Roof Venting




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Old 05-31-2016, 07:39 PM   #18
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Re: New Construction Question - Roof Venting


At least they got them equidistantly spaced. Most I see aren't spaced properly.

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