How Much Roof Ridge Vent Do I Need

I have roof vents so i have roof ventilation.

How much roof ridge vent do i need. I cant seem to find much info on this venting method. Soffit runs continuiously around house no upper vents ie. 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. The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available.

Even without soffit vents a ridge vent is much more effective than gable vents paulcp thinks hammer is right. What is a ridge vent and does my roof need one. 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. Of net free area of intake needed at or near the soffit.

Ridge etc do i really need upper vents or is soffit only ok. A very popular way to provide adequate ventilation in an attic space is with a ridge vent sometimes called a continuous vent. Florida house here built in 1997. 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.

Take for example ridge vents. Ridge vents run along the apex of your roof and are long and narrow. Of net free area of exhaust needed at or near the ridge. To do this set the saw depth to the correct number based on how deep the wood and remaining shingles are.

For the 1 150 attic ventilation requirement simply double the amount of exhaust and intake calculated. Rather than interrupting the roof line the way other raised vents do a ridge vent is so low profile that almost unnoticeable. Enter square footage calculate or enter the square footage of the attic or area to be vented. Roof vent types ridge vents.

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. 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. Ridge static attic vents 384 00 minimum sq.

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. The problem with gables is they short circuit the air flow paulcp writes. They should be divided equally between inlet and outlet vents and they can be used in any combination that will work with your roof s design.