+ Reply to Thread
Results 1 to 4 of 4
  1. #1
    Join Date
    Mar 2014
    Posts
    1

    Default gambrel ventilation

    I've recently had MassSave come out to do an air seal but they could not do it at the present time because the fear of possible mold. So attic ventilation is my question, i have a gambrel roof. with ridge and soffit and gabel vents. my ridge is poorly designed (to narrow), my gabels are not to code and my soffits are in my opinion located in the wrong spot. the soffit vents in the front of the house are at the height of the 2nd floor floor's. which means the venting has to climb 8 feet up the wall and another foot above the attic insulation. is there an alternative? can i install vents in the trim the meets the top roof line to the slant roof?

  2. #2
    Join Date
    Jan 2014
    Location
    NH
    Posts
    136

    Default Re: gambrel ventilation

    Quote Originally Posted by STEELMA02 View Post
    I've recently had MassSave come out to do an air seal but they could not do it at the present time because the fear of possible mold. So attic ventilation is my question, i have a gambrel roof. with ridge and soffit and gabel vents. my ridge is poorly designed (to narrow), my gabels are not to code and my soffits are in my opinion located in the wrong spot. the soffit vents in the front of the house are at the height of the 2nd floor floor's. which means the venting has to climb 8 feet up the wall and another foot above the attic insulation. is there an alternative? can i install vents in the trim the meets the top roof line to the slant roof?
    Hi, Are you trying to lower your heat bill? Thanks

  3. #3
    Join Date
    Sep 2012
    Location
    Boston
    Posts
    1,004

    Default Re: gambrel ventilation

    if you're vents are low in relation to the height of the attic, you can install a ridge vent. this will allow the fresh air to come in the gable end vents, be heated in the attic space and rise out of the ridge vent. you could also install a powered, temperature controlled, roof vent up close to the ridge.

    what part of mass are you in?

  4. #4
    Join Date
    Dec 2007
    Location
    Tennessee
    Posts
    1,761

    Default Re: gambrel ventilation

    Your soffit vents are in the correct place. They go under the eves which on a gambrel roof are level with the floor where the roof starts. The steep portion is being used as a wall, but it is still roof and it needs to be vented as such. You can use either a ridge vent in the top, but because of the very flat angle of the ridge, it may not be as rain tight as it would be with a greater pitch. You may want to use gable vents instead, and if done right, should be adequate.

    If that MassSave air seal is a foam insulation sprayed on the underside of your roof between the rafters, I would advise against it.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •