Attic and Roof Ventilation

Proper ventilation is vital to maintaining a functional and safe roof and attic space. If inadequate ventilation systems are employed, moisture can become trapped in the attic space or the underside if your roof. Water damages can lead to material deterioration, mold growth, ice dams and more.

If water damage is left to fester, the damages can be so severe that a full roof replacement is required. DonÕt let lacking ventilation result in a damaged roof or attic. Utilise proper attic ventilation systems.

There are several types of ventilation you can use. Though, more ventilation is not always the answer. Make sure your roof and attic are inspected by trusted ventilation professional to identify the ideal type of vents for your needs. These are 5 commonly used styles of roof and attic vents.

Box Vents
These are also referred to as Òlow profile ventsÓ as they have no moving parts. Box vents rely on a natural convection, to allow hot moisture-rich air to rise and escape through the vent. The vents are mot effective when installed near the ridge of a roof. A roof ridge is the peak or spine of the roofing system. Box vents are available in a number of colours and materials.

Wind Turbines
Wind turbines have also been called ÒwhirlybirdsÓ.  These vents do contain moving parts but have no motor. These vents offer a similar service as a box vent, by allowing the wind to blow the turbine and relieve hot air from the attic space. These vents can only be effective when the wind blows. Only utilise turbine vents with lubricated ball bearings and plastic bushings, as a lesser quality vent can result in a squeaking noise after years of use.

Power Vents
These vents are commonly called Power Attic Vents or PAVs. These vents have a motor inside that powers a fan to drive hot air and trapped moisture out of an attic space. Many of these vents can offer innovative features to detect moisture levels and temperatures in the attics space. When the vent detects too much heat or moisture it can turn on automatically. The vents can be installed into the home electrical system or onto roof solar panels. Power vents work quietly, though this can be an issue, as many homeowners have reported that their vents have been dead for months, without them knowing. Keep your power vents functional with semi-annual ventilation inspections.

Ridge Vents
Ridge vents are designed to be installed over the entire length of your roofÕs ridge. These vents do not rely on the wind and have no moving parts, though provide and efficient outlet for hot air and water particles to leave your attic and roof space. These vents are best used in cooperation with soffit vents. Ridge vents that are not installed across the entire length of the roof ridge can leave an unfinished look as well as future hot and cold spots in the attic space.

Soffit Vents
Last but not least are soffit vents. Soffit ventilation systems are installed on the overhanging underside, or soffit of your roof. These vents provide a different function than the others on the list as they are and air-intake system. Soffit vents allow air to enter the attic space, which can promote circulation, evaporation and push more air to be expelled by the box, turbine, power or ridge vents. Soffit vents allow for efficient installation by cutting a hole in your roof soffit and placing the vent into the hole. Similar to ridge vents, soffit ventilation systems can be installed along the entire length of the roof soffit to provide the most effective ventilation.