It's a cracker boxed shape house, although it's not in the "cracker box" style. It has a straight ridge that drops about a foot halfway down it. There was no science used when it was built. It has round vents at each gable end and a few soffit vents just put in willy-nilly. The power company is supposed to blow in insulation.

I wouldn't unless you are getting a new roof at the same time.

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C(-)ris
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C(-)ris
I wouldn't unless you are getting a new roof at the same time.

Same here, although making sure what few soffit vents you do have aren't blocked by insulation inside should be a priority.

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I'm getting a re-roof. Isn't there a baffle that goes at the edge of the rafters that handles the air flow from the vents.



Edited 1 time(s). Last edit at 12/29/2020 05:35PM by Dennis S.

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Dennis S
I'm getting a re-roof. Isn't there a baffle that goes at the edge of the rafters that handles the air flow from the vents.

There can be, but they aren't always present especially on older homes. On most down here, the soffit vents lead directly to the attic as do the gable vents. It's not uncommon for soffit vents to get blocked by loose insulation.

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WARNING- If I posted a link in the above message, assume it is at minimum "NSFW- Language". Occasionally you'll be wrong.

Lie to me if you must, but don't lie to me and insult my intelligence in the same sentence.

Resist the Thought Police: George Orwell's book 1984 was meant as a warning, not an instruction manual.

"Political correctness is just intellectual colonialism and psychological fascism for the creation of thought crime" - Steve Hughes

What's my "Super Power"? I can make active threads go stone-dead with a single post. I try to use this power only for good and not for evil but, you know... stuff happens.



Edited 1 time(s). Last edit at 12/29/2020 05:52PM by Thrift Store Scott.

we had a complete strip and re-roof sometimes back.
the roofer has tons of experience, but the ridge had leak issues in high winds. And it showed badly in the bed vaulted ceiling.
He had to come back and pull the ridge and replace with regular vents.
Maybe just the house, or a bad day, but I'll stick to vents.

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!#$@@$#!

Quod suus via crustulum saxum

Install these where the soffit vents are;
[www.homedepot.com]

Check your local building code for attic venting. Not all places allow soffit/ridge/etc.

Had 3 roofs each with a ridge vent over the past 25y.
No leaking problems, just good performance.
Recommended.

I strongly recommend the ridge vent.. Made a big difference in our house - no issues with water infiltration.

You need enough soffit venting to meet the size of the ridge venting. You can put in a continuous soffit vent, or a bunch of individuals.

As mentioned, make sure the soffit vents are not blocked by the loose insulation.

When we redid our roof, the roofer didn't use a ridge vent, for whatever reason. I was looking through the warranty info for the shingles we used, and it said that NOT using a ridge vent might void the warranty. So, out he came and installed one. No issues with it.

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YES

Yes to ridge vent. I don't see a downside, even with limited soffit and gable vent area.

.....ridged....for her pleasure.....????

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Should the inflow and outflow areas be equal or should there be a little more inflow?

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Dennis S
Should the inflow and outflow areas be equal or should there be a little more inflow?

Generally you want more inflow than outflow to avoid creating a low pressure zone in for attic space. That can lead to pulling cooled or heated air from your living space below the attic.