How Much Roof Ridge Vent Do I Need

The whole point to a ridge vent is that it takes air from all along the bottom of the roof line and exits it out the top kind of like a toilet.

How much roof ridge vent do i need.

The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. Ridge etc do i really need upper vents or is soffit only ok. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Of net free area of intake needed at or near the soffit.

I have roof vents so i have roof ventilation. What is a ridge vent and does my roof need one. The shape of the roof impacts how much air comes through the system which means this vent must always be placed at the peak of the roof along your ridges. Even without soffit vents a ridge vent is much more effective than gable vents paulcp thinks hammer is right.

Of net free area of exhaust needed at or near the ridge. Ridge static attic vents 384 00 minimum sq. You may opt to only have one ridge utilized for a vent if there are multiple options on your roof but that can reduce the effectiveness of this system too. Enter square footage calculate or enter the square footage of the attic or area to be vented.

For the 1 150 attic ventilation requirement simply double the amount of exhaust and intake calculated. While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. The wood sheathing underneath the shingles on the ridge must be cut through to install your ridge vent. If your attic is 450 square feet you need roof vents equaling 3 square feet.

Take for example ridge vents. To do this set the saw depth to the correct number based on how deep the wood and remaining shingles are. A very popular way to provide adequate ventilation in an attic space is with a ridge vent sometimes called a continuous vent. Soffit runs continuiously around house no upper vents ie.

Florida house here built in 1997. Ridge vents run along the apex of your roof and are long and narrow. 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. I cant seem to find much info on this venting method.

Roof vent types ridge vents. Rather than interrupting the roof line the way other raised vents do a ridge vent is so low profile that almost unnoticeable. Also thinking of a radiant barrier and or more insulation currently r19 any info would help thanks.