Passive Attic Ventilation System

Gable vents are a type of louvered vent that can act as an intake or exhaust vent depending on which way the wind is blowing.

Passive attic ventilation system.

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. In order to facilitate this exchange of warm and cool air the general rule of. While a simple vent is sometimes used to allow for the passive flow of air it s also possible to add a powered attic fan commonly called an attic power ventilator. To understand how proper ventilation works here s the anatomy of a basic passive pole barn ventilation system.

Roof turbines have blades that spin in the wind pulling air up through the intake vents into the attic and out of the house. The process starts with warm moist air rising inside your pole barn. Passive ventilation systems use a series of vents in exterior walls or at exterior windows to allow outdoor air to enter the home in a controlled way. Big organizations like the forest products laboratory and even the american society of heating refrigerating air conditioning engineers realized that poor roof ventilation systems could cause condensation problems in a.

The early to mid 20th century saw the development of this concept. Passive roof vents encourage natural air flow and work without the aid of motorized fans. Roof vents enhance the overall comfort of the house by providing escape hatches for hot stale moist air which can reach temperatures of 150 degrees in summer. Roof ventilation is not a new process by any means.

Help protect your roof system from premature deterioration by installing a properly balanced attic ventilation system consisting of cobra exhaust vent at the ridge and adequate intake ventilation at or near the soffit areas of your roof. Natural airflow wind and the temperature differences in indoor and outdoor air help to draw in fresh air and circulate it through the home. Out with the moist stale air. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.

When spaced evenly across the roof roof turbines can provide passive exhaust on windless days. Renewaire energy recovery ventilators ervs can be applied everywhere across all commercial educational institutional light industrial and residential buildings. Passive roof vents expel excess heat and moisture. Static roof vents also known as roof louvers are designed to fit into the highest peaks of a roof and rely on wind to function.

More product details close. Owens corning recommends a balanced ventilation system based on the u s. The key is to balance incoming air with outgoing and perform an annual maintenance checkup.