Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Roofing/Siding

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-04-2009, 01:43 PM   #1
Newbie
 
Join Date: May 2009
Posts: 3
Share |
Default

Adding attic vent w/existing ridge vent


Hi Folks,

I have a ~new (2007) house here in Georgia, and I'm looking for ways to cool off my attic during the brutal summer months. I currently have soffit + ridge vents, but I'm wondering whether some roof vents (probably solar) would help? The attic is ~1500sqft, and currently has R30 insulation.

In the summer, the upstairs central air unit runs nearly constantly, and I'd like to make a dent in the awful electric bill. I'd appreciate any pointers!

Thanks!

GeorgiaGeek is offline   Reply With Quote
Old 05-04-2009, 01:47 PM   #2
Handyguy
 
Brik's Avatar
 
Join Date: Jan 2007
Location: SE PA
Posts: 803
Send a message via Skype™ to Brik
Default

Adding attic vent w/existing ridge vent


Gable vents are easy to do. Some can be powered as well. If you have a roof/attic design that will lend itself to gable vents I would go that route.

Brik is offline   Reply With Quote
Old 05-04-2009, 01:50 PM   #3
Newbie
 
Join Date: May 2009
Posts: 3
Default

Adding attic vent w/existing ridge vent


Unfortunately the roof doesn't really have any gables. The only one is over the (uninsulated) garage, and it already has one.
GeorgiaGeek is offline   Reply With Quote
Old 05-04-2009, 02:09 PM   #4
Handyguy
 
Brik's Avatar
 
Join Date: Jan 2007
Location: SE PA
Posts: 803
Send a message via Skype™ to Brik
Default

Adding attic vent w/existing ridge vent


I'm assuming your soffit vents are not blocked. The key to a ridge vent working well is having an equal, or greater opening at the soffit. Same will hold true with adding roof vents. Powered roof vents will possibly work better if your soffit vents are limited but will require a certain amount of intake. I don't generally care for roof vents because they are one more hole in your roof that could leak if installed incorrectly but in your case they may be your only option.

Here are a few to consider

Solar
http://astore.amazon.com/handyguys-20/detail/B001AH3C66

Electric
http://astore.amazon.com/handyguys-20/detail/B000LDIWPG

Passive turbine
http://astore.amazon.com/handyguys-20/detail/B000HE4RSA

Passive duct type
http://astore.amazon.com/handyguys-20/detail/B000BQOA8Q
Brik is offline   Reply With Quote
Old 05-04-2009, 02:29 PM   #5
Newbie
 
Join Date: May 2009
Posts: 3
Default

Adding attic vent w/existing ridge vent


Thanks for the reply... that makes sense. There should be enough air from the soffit, but I'll check and make sure there aren't any blockages.

So, is it possible to add too much ventilation? I assume at some point there are diminishing returns....

Would a radiant barrier be any help? How does it get applied with the existing blown insulation?
GeorgiaGeek is offline   Reply With Quote
Old 05-04-2009, 02:39 PM   #6
Handyguy
 
Brik's Avatar
 
Join Date: Jan 2007
Location: SE PA
Posts: 803
Send a message via Skype™ to Brik
Default

Adding attic vent w/existing ridge vent


I'm not sure I am a fan of radiant barriers. Others may disagree but I think my first choice would be venting.
Brik is offline   Reply With Quote
Old 05-05-2009, 02:04 AM   #7
Member
 
Join Date: Jan 2007
Posts: 2,384
Default

Adding attic vent w/existing ridge vent


Quote:
Originally Posted by GeorgiaGeek View Post
Thanks for the reply... that makes sense. There should be enough air from the soffit, but I'll check and make sure there aren't any blockages.

So, is it possible to add too much ventilation? I assume at some point there are diminishing returns....

Would a radiant barrier be any help? How does it get applied with the existing blown insulation?
How are you sure that there is enough Soffit Intake Ventilation?

How many and what size do you have?

Unless you have 100% continuous soffit vents, then over 90% of the time, you will be substantially under ventilated for Intake.

Ed

Ed the Roofer is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
new roof, ridge vent was in est, but not installed... Zel1 Roofing/Siding 29 09-01-2010 04:30 PM
HOT attic, ridge vent/soffit vent questions gone_fishing Roofing/Siding 36 07-14-2008 09:26 PM
Ridge Vent on a Shed jokiddjr Roofing/Siding 5 03-14-2008 03:22 PM
low-slope roof and leaky ridge vent downers Roofing/Siding 15 02-21-2008 11:35 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.