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RIDGE VENTS

1110d | Posted in Energy, Heating & Insulation on September 24, 2002 11:14am

I’m looking for a ridge vent to install on my home. I’m only interested in the rigid designs so I can install a historic sheetmetal cap over it. Somewhere I heard that you want to use ridge venting that has a “lip” in it so that the air is deflected over the vent. With the air passing over the ridge it would then creat the necessary suction to draw the air though the cavity space. I believe that this may have been a ASHRAE study, but I’m not sure. Is anybody able to reinforce this rumor with fact? Any advice for me?

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Replies

  1. grantlogan | Sep 25, 2002 12:35am | #1

    I've used Coravent in applications like the one you describe with great success.

    http://www.cor-a-vent.com/

    1. 1110d | Sep 25, 2002 12:47am | #2

      Yes, cor-a-vent is one of the manufacturer's that I'm considering. I know that their x-5 system (with the flip vent) is good for harsh weather conditions, but does the vent function in light winds? The vent supposidly closes at 20mph. Guess I was wondering if the vent performs like the typical ridge vent (ie doesn't work below 20mph).

  2. Piffin | Sep 25, 2002 04:01am | #3

    Do you have soffit vents below?

    Excellence is its own reward!
    1. 1110d | Sep 26, 2002 03:30am | #4

      Yes, when I replaced the roof soffit vents were added.

      1. Piffin | Sep 26, 2002 03:37am | #5

        Good, just checking.Excellence is its own reward!

      2. TLRice | Sep 27, 2002 02:45pm | #6

        How did Prospero allow a clone?

        1. UncleDunc | Sep 27, 2002 03:13pm | #7

          Your login name has to be unique. Your nickname does not have to be unique. That's one reason I'm Uncle Dunc here instead of Bruce.

          1. jet | Sep 27, 2002 07:51pm | #8

            That's one reason I'm Uncle Dunc here instead of Bruce.

            And what's wrong with Bruce???????  {chuckle}

          2. UncleDunc | Sep 27, 2002 08:27pm | #9

            Nothing wrong with Bruce. It's just that the voices told me not to use my real name here.

          3. jet | Sep 27, 2002 11:28pm | #11

            So we share something in common.

            when calling in sick say the voices told me to clean all the guns.     Stolen from the voices thread.

  3. xMikeSmith | Sep 27, 2002 11:13pm | #10

    we've researched a lot of the claims and followed the topic since the early '70's... if you're going to use a ridgevent.. the best is Shingle Vent II   by Air-Vent.. which is now a Certainteed Company..

    but hey , whadda i no ?

    Mike Smith   Rhode Island : Design / Build / Repair / Restore

    1. 1110d | Sep 28, 2002 12:32am | #12

      Yes, I have a sample of the shingle vent II. In fact it was the vent that I designed the ridge roll profile around. The sloped vent was causing me some grief though and I was hoping for a alternative. Guess that if this is the profile that I should be using, then I'll just have to deal with it.

      1. brownbagg | Sep 28, 2002 05:00am | #13

        I have nothin under my metal cap, for a ridge vent just a hole. Had an hurricane yesterday with 20 inches of rain with wind. attic stayed dry.

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