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#1 |
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Professional Instigator
Trade: Design Build Remodeling Contractor DC MD
Join Date: Nov 2007
Location: Washington, DC/ Maryland
Posts: 6,872
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Do You Have To Vent A Roof?
I had an idea while I was remodeling my home and decided to install heat and air vents in my attic space. The roof has limited venting except for a ridge vent.
I thought this would be better than traditional venting methods and actually cause the system to perform more efficiently. The unit is located in the attic I was wondering if this could negatively impact the space or could this also be an alternative to traditional roof venting. Looking for thoughts from those who have a better idea or real world experience |
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#2 |
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Curmudgeon
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,707
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Re: Do You Have To Vent A Roof?
Sounds like you have just brought the great
outdoors into your conditioned space. I think it's bad medicine.
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#3 |
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Professional Instigator
Trade: Design Build Remodeling Contractor DC MD
Join Date: Nov 2007
Location: Washington, DC/ Maryland
Posts: 6,872
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Re: Do You Have To Vent A Roof?
Why do you say that?? I am really hoping to get more information on the downsides. I did this after reading an article on crawl space being done the same way.
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#4 | |
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Curmudgeon
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,707
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Re: Do You Have To Vent A Roof?Quote:
and insulated...brought into the envelope of the conditioned space. Then that must be in conjunction with heat exchangers and whole house ventilation to take care of moisture issues..... Hold on a bit while I dig, Ed has posted some articles here.
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#5 |
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Curmudgeon
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,707
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Re: Do You Have To Vent A Roof?
http://www.contractortalk.com/f15/news-worthy-conditioned-unvented-attics-33951/
http://www.contractortalk.com/f15/free-download-advanced-energy-design-guide-33954/ http://www.contractortalk.com/f15/tenwoldes-5-myths-moisture-33952/ There should be something on point for you in there. The major point is that attic ventilation has to be considered in the context of the entire house.
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#6 |
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Professional Instigator
Trade: Design Build Remodeling Contractor DC MD
Join Date: Nov 2007
Location: Washington, DC/ Maryland
Posts: 6,872
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Re: Do You Have To Vent A Roof?
I remember some of those post. But I will read them to get a better understanding. Thanks for the links
I do have natural ventilation in the roof vents. I did not want a complete conditioned space for several reasons. But I will read the treads and inform myself some more and come back with more questions/ideas |
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#7 | |
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Curmudgeon
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,707
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Re: Do You Have To Vent A Roof?Quote:
I'm off to see the wizard.... or at least to meet with the Wallet!
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#8 |
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Pro
Trade: Roofing Contractor
Join Date: Dec 2006
Location: NW Suburbs of Chicago
Posts: 7,135
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Re: Do You Have To Vent A Roof?
Wow Neo!!!
How did you pull those out so quickly and to the point? I never used the more advanced features on this forum, just the Subscriptions, but do you Bookmark and create Folders for certain topics? Give s simple tutorial so I can start doing that too. It would make my life so much easier finding threads and posts versus trying to use the Search and Advanced Search Function, trying to remember the words associated with a particular topic to get it to pull up quickly. I have to do that from memory and that is as sharp as a marble sometimes. Ed
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#9 | |
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Curmudgeon
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,707
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Re: Do You Have To Vent A Roof?Quote:
and ate all my bookmarks, I've been going back through old stuff here. Making book marks where appropos and making thread subscriptions for things I haven't completely explored or turned into pdf form. Those are still in subscribed threads since there's considerable meat there, ![]() and links I haven't followed through on yet. So... just copied links from "Subscribed Threads". Crap, missed another chance to seem smart.
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#10 |
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Professional Instigator
Trade: Design Build Remodeling Contractor DC MD
Join Date: Nov 2007
Location: Washington, DC/ Maryland
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Re: Do You Have To Vent A Roof?
Ok I went ahead and conditioned my attic space.
I have been looking around in there and every thing seems fine. I will check again in the Summer but so far I think it has worked out. I still don't see or can't think of any down sides |
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#11 |
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Pro
Trade: LI,NY designer, new homes, renovation work, concre
Join Date: Mar 2008
Location: Long Island, NY
Posts: 5,426
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Re: Do You Have To Vent A Roof?
Rory, we are members of a Long Island Builders Association, here is a link for New York Energy Research, i have sat through hours of seminars on Energy Star Building, and the new thinking of the TIGHT ENVELOPE IN BUILDING, poke around, there is alot of good info. G
http://www.getenergysmart.org/Single...HomeOwner.aspx
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#12 | |
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Curmudgeon
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,707
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Re: Do You Have To Vent A Roof?Quote:
The attic is still open to the ridge vents? Won't the warm air just be blowing out through the ridge vent? Thanx for the link Gene.
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#13 |
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Pro
Trade: Kitchen & Bath
Join Date: Nov 2007
Location: Millersville, PA
Posts: 1,328
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Re: Do You Have To Vent A Roof?
Not sure if this is a repeat of one of the threads Neo posted but the subject got hit pretty hard here too:
http://www.contractortalk.com/showth...adiant+barrier |
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#14 | |
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Professional Instigator
Trade: Design Build Remodeling Contractor DC MD
Join Date: Nov 2007
Location: Washington, DC/ Maryland
Posts: 6,872
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Re: Do You Have To Vent A Roof?Quote:
The bills have all averaged the same and don't seem to be out of whack either. Thanks for the Links Gene and Owen Last edited by rbsremodeling; 11-17-2008 at 09:44 PM. |
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#15 |
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Pro
Trade: Build, Remodel, Roofing, Siding etc...
Join Date: Nov 2007
Location: Moorestown, NJ
Posts: 265
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Re: Do You Have To Vent A Roof?
the only thing this brings to mind with me is ice damming. if an attic if correctly vented and the home correctly insulated you minimize your chances if ice damming. maybe in your area you don't get much snow, so this isn't an issue. if you do get snow than the snow will melt over the conditioned attic space than freeze at the soffits, creating an ice damn.
the only way i see possible to alleviate this problem would be to insulate your rafters and keep the soffits open for conditioning, like the common air of the attic. this creates a new problem for your roof, which could possibly be fixed with proper vent between the insul and roof sheething. i didn't read through any of the other threads posted by others, so if this was already touched on i apologize. if it ain't broke don't fix it spencer |
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