 Ridge vents (by Dan [TX]) Jun 22, 2017 11:44 AM
 Ridge vents (by NE [PA]) Jun 22, 2017 12:14 PM
Ridge vents (by cjo'h [CT]) Jun 22, 2017 12:30 PM
Ridge vents (by Steve [MA]) Jun 22, 2017 12:39 PM
Ridge vents (by Steve [MA]) Jun 22, 2017 12:50 PM
Ridge vents (by gevans [SC]) Jun 22, 2017 12:52 PM
Ridge vents (by Homer [TX]) Jun 22, 2017 12:52 PM
Ridge vents (by Landlord ofthe Flies [TX]) Jun 22, 2017 1:10 PM
Ridge vents (by BRAD 20,000 [IN]) Jun 22, 2017 1:26 PM
Ridge vents (by Andrew, Canada [ON]) Jun 22, 2017 4:23 PM
Ridge vents (by nhsailmaker [NH]) Jun 23, 2017 3:29 AM
Ridge vents (by Wilma [PA]) Jun 23, 2017 12:00 PM
Ridge vents (by Dan [TX]) Posted on: Jun 22, 2017 11:44 AM
Message:
Who"s a fan of ridge vents? And how much is enough? --161.226.xxx.xxx |
Ridge vents (by NE [PA]) Posted on: Jun 22, 2017 12:14 PM
Message:
It's not really a matter of being a fan. It's probably code. I'm not sure, but we always install them anyways. You want as much ventilation in your attic as possible. Heat rises.
The peak is the highest point. Ridge vent vents the peak. --174.201.xx.xx |
Ridge vents (by cjo'h [CT]) Posted on: Jun 22, 2017 12:30 PM
Message:
A fan might help too.......Charlie......... --174.199.xx.xx |
Ridge vents (by Steve [MA]) Posted on: Jun 22, 2017 12:39 PM
Message:
For cosmetic reason we install the ridge vent across the entire ridge. This avoids having a dip in the ridge cap at the gable ends. When cutting the ridge slot we stop 12-16 inches before we reach the edge of the roof. Of course if you don't balance the ridge vents with an equal amount of soffit vent then it won't work correctly. In snow & high wind areas a ridge vent with a built in baffle helps to prevent wind driven snow & rain from entering the attic. --72.93.xxx.x |
Ridge vents (by Steve [MA]) Posted on: Jun 22, 2017 12:50 PM
Message:
Most codes require 1 SF of ventilation for every 300 SF of attic. I normally use 1 square inch of ventilation for every SF of attic which comes out to 1 SF of ventilation per 144 SF attic. This means SF of net ventilation not just SF of vent maternal. This vent free area should be divided equally between the ridge & the soffit. It also important to use baffle to prevent any attic insulation from blocking the soffit vents.
Most roofing & vent manufactures have info on their web sites. The following is from the GAF web site.
GAF Attic Ventilation Calculator
Use this calculator to help determine the proper amount of attic ventilation based on U.S. FHA 1/300 guidelines.
Proper attic ventilation consists of a balance between air intake (at your eaves, soffits or fascias) and air exhaust (at or near your roof ridge).
The U.S. Federal Housing authority recommends a minimum of at least 1 square foot of attic ventilation (evenly split between intake and exhaust) for every 300 square feet of attic floor space.
Always have a balanced ventilation system. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation.
NOTE: The 1/300 rule is a general rule and does not apply to all situations. Local building codes, when stricter, take precedence. Always consult a design professional for cathedral ceilings, insulated roof decks, etc. --72.93.xxx.x |
Ridge vents (by gevans [SC]) Posted on: Jun 22, 2017 12:52 PM
Message:
I'm a big fan. Anybody in the deep south should be. I ALWAYS run continuous ridge vent along with continuous soffit vents.
A well vented attic is only one or two degrees hotter than the outside air. You can hold your hand next to the underside of the roof and feel the air rushing by sometimes.
Makes shingles last longer and greatly reduces cooling requirements. Not to mention reduces the likelihood of mold or mildew. --69.80.xx.xxx |
Ridge vents (by Homer [TX]) Posted on: Jun 22, 2017 12:52 PM
Message:
I was a fan of ridge vents about 6-7 years ago. I put them in every house I re roofed. Fast forward 4-5 years and I have found the air flow has reduced due to the amount of dust passing through the screens. Last couple years I have gone to putting several of those passive turtle type vents on the back side of the roofs. Mostly about 5 -7 feet apart across the roof, which usually end up with 7-8 vents. Of course, I'll Probely decide I don't like those in a few years, and try something else. --75.141.xxx.xxx |
Ridge vents (by Landlord ofthe Flies [TX]) Posted on: Jun 22, 2017 1:10 PM
Message:
I'm a big fan of turtle vents. Pulls air out without a fan. Works same way as wind going around sail creating forward momentum. --108.69.xxx.xxx |
Ridge vents (by BRAD 20,000 [IN]) Posted on: Jun 22, 2017 1:26 PM
Message:
I hate holes in roofs. Each is an added future leak and should be declared illegal!
We use ridge vents. I figure they are safer than multiple holes for box or turtle vents. For cosmetic reasons we run them the entire length of the ridge even tho the hole stops short of the end. Makes for a pleasing appearance.
BRAD
--68.50.xx.xxx |
Ridge vents (by Andrew, Canada [ON]) Posted on: Jun 22, 2017 4:23 PM
Message:
The only place we have them is on on house. It was re singled before we moved in and they were installed then.
They certainly help, but I think I would have gone with quality whirlybirds. I agree....im not a big fan of too many holes in a roof. --70.31.xx.xx |
Ridge vents (by nhsailmaker [NH]) Posted on: Jun 23, 2017 3:29 AM
Message:
GABLE END VENTS ,GABLE END VENTS ,GABLE END VENTS ,GABLE END VENTS , nuff said. proper vents at the soffits are a disaster and very very expensive for stupid styrofoam. Lawrence Livermore laboratory did a study and the proper vents at the soffits need to be at least 1.5 " deep and extent the whole width of the roof rafter for proper ventilation. I would put a massive one on either end as you cant vent enough. --96.61.xx.xx |
Ridge vents (by Wilma [PA]) Posted on: Jun 23, 2017 12:00 PM
Message:
Love/hate.
Love the huge difference that they make, if coupled properly with soffit vents and air channels up to the ridge.
Hate them during n'oreaster rain storms - the rain going sideways manages to get in, both here at home and in a sfh rental. Haven't managed to defeat that yet, but it happens so infrequently that we just dry out, apply Kilz, repaint. --71.175.xxx.xxx |
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