Convex Wind Over Ridge Vent Drives Water Into Attic

N most roofing manufacturers now make ridge vents that have passed wind driven water tests.

Convex wind over ridge vent drives water into attic.

It is mounted over a hole cut in the roof near the ridge and has a louvered donut or dome shaped top mounted on a cylinder. They re all over the last. Ridge vents are vents placed over gaps of roof sheathing about 1 1 2 wide on each side of the roof peak that provide an outlet for hot air to exit the attic. Roofing nails are usually too short and will not hold well during a strong wind storm.

The idea of roof vents existed for hundreds of years with natural vents employed in chinese buildings during the tang dynasty natural ventilation ducts in the buddhist monks caves and wind catchers incorporated in arabian architecture. The building codes and building science for. For example the ventsure ridge vent leaked more than 2 gallons of water the roll vent ridge vent leaked more than 3 1 3 and the ridgemaster ridge vent leaked more than 3 1 2 gallons. Years of research prove that a ridge vent with external baffles and an internal weather filter combined with undereave venting is the most efficient system you can install.

These vents are installed in the soffit the enclosed portion under the roof overhang and permit air to flow up under the roof and into the attic. They range in style from 6 inch round stainless steel vent covers that are placed in the soffit between each rafter to continuous vents that run the entire length of the soffit. The external baffle deflects wind over the vent preventing rain infiltration into the attic while other ridge vents allowed in 2 4 gallons of water. Here s leonard from aldine writing to us.

They work best when paired with the soffit ridge vent system as part of a balanced system. It is fairly common to find ridge vents dislodged or blown off during a hurricane figure 8. He says he wants to know tom is it true that ridge vents allow rain to be blown into your attic. Most professionals recommend screwing the ridge vent to the roof.

Even a partially dislodged ridge vent can begin to act like a scoop that collects wind driven rain and directs it into the attic. As well homeowner s may need to check for proper installation of their ridge vent. Obviously we re all over the place. A improper installation or b some roof feature which is directing the wind and rain into that part of the vent.

Ridge vents are little vented hats. A turbine works better than the ridge vent during the winter to help prevent ice dams when deep snow can block ridge vents. The rigid plastic vents generally work well so the problem may be. Ridge vent fasteners should always be fastened into the rafters usually every 16 to 24 inches.