To Add Ridge Vent or NO ?

Tomsoxfan · 10-21-2011, 12:30 PM

I have a 1950's style ranch with gable vents on each end. We are currently getting prices on putting new shingles on...some guys are saying we need the roof ridge vent, some are saying we dont because of the gable vents ?

Helpppppppppppppppppppppppppppppppp

Windows on Wash · 10-21-2011, 05:54 PM

Additional ventilation on the ridge without make up air does little to nothing.

How big are the gable vents and what the footprint of the home?

Do you have existing soffit vents?

Tomsoxfan · 10-21-2011, 06:00 PM

House is 36 x 30... Gables might be 12" wide ??

No soffits

**Gary in WA** · 10-21-2011, 11:15 PM

Scroll backward to page 603 and read where you can about gable vents, sizes, etc. as some pages are missing: http://books.google.com/books?id=Z8a...0vents&f=false

1. Has your attic shown recent signs of excess moisture to change the existing venting system?

Air seal first: http://www.jlconline.com/cgi-local/v...170a32100a05c7

2. Where are you located? http://www.joelstiburek.com/topten/south.htm

Gary

Tomsoxfan · 10-21-2011, 11:45 PM

No wear, just time to re shingle

Located in mass

Windows on Wash · 10-22-2011, 10:30 AM

Quote:

Originally Posted by Tomsoxfan

No wear, just time to re shingle

Located in mass

If not issues with sheathing and moisture, air seal and insulate the attic floor and improve the efficiency of the home while decreasing the necessity for ventilation.

The fact that you don't have any moisture, mold, or mildew issues indicates that the ventilation has been sufficient to date.

Adding a ridge vent without providing make up air is just plain idiotic as it will draft/draw air from the living space below.

Tomsoxfan · 10-22-2011, 10:50 AM

Do the gable vents bring in some air ?

Windows on Wash · 10-23-2011, 09:59 AM

Yes.

Attic ventilation has nothing to do with shingle cooling nor is that what its intended purpose is.

If you don't have mold, mildew, or moisture issues in the attic, you should not have any issues in the future.

Air Seal and insulate the attic.

GBR posted up a great link.

10-21-2011, 12:30 PM	#1
Tomsoxfan Newbie Join Date: Oct 2011 Posts: 4	To Add Ridge Vent or NO ? I have a 1950's style ranch with gable vents on each end. We are currently getting prices on putting new shingles on...some guys are saying we need the roof ridge vent, some are saying we dont because of the gable vents ? Helpppppppppppppppppppppppppppppppp

10-21-2011, 05:54 PM	#2
Windows on Wash Exterior Construction Join Date: Aug 2011 Location: VA, MD, DC Posts: 3,832	To Add Ridge Vent or NO ? Additional ventilation on the ridge without make up air does little to nothing. How big are the gable vents and what the footprint of the home? Do you have existing soffit vents? __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

10-21-2011, 06:00 PM	#3
Tomsoxfan Newbie Join Date: Oct 2011 Posts: 4	To Add Ridge Vent or NO ? House is 36 x 30... Gables might be 12" wide ?? No soffits

10-21-2011, 11:15 PM	#4
Gary in WA Moderator Join Date: Mar 2009 Posts: 8,843	To Add Ridge Vent or NO ? Scroll backward to page 603 and read where you can about gable vents, sizes, etc. as some pages are missing: http://books.google.com/books?id=Z8a...0vents&f=false 1. Has your attic shown recent signs of excess moisture to change the existing venting system? Air seal first: http://www.jlconline.com/cgi-local/v...170a32100a05c7 2. Where are you located? http://www.joelstiburek.com/topten/south.htm Gary __________________ Clothes taking longer to dry? Clean the dryer screen in HOT water if using fabric softener sheets. They leave a residue that impedes air-flow, costing you money. Clean the ducting in the last six months? 17,000 dryer fires annually!

10-21-2011, 11:45 PM	#5
Tomsoxfan Newbie Join Date: Oct 2011 Posts: 4	To Add Ridge Vent or NO ? No wear, just time to re shingle Located in mass

To Add Ridge Vent or NO ?