Passive Attic Ventilation System

One of the natural types of ventilation systems is where air flows through windows and cracks and around door frames.

Passive attic ventilation system.

The other is a home s mechanical ventilation system. It alleviates moisture in the winter and heat in the summer to extend roof membrane life. Natural airflow wind and the temperature differences in indoor and outdoor air help to draw in fresh air and circulate it through the home. 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.

Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic. Passive roof vents encourage natural air flow and work without the aid of motorized fans. Roof ventilation achieving calculated continuous and unimpeded airflow through the roof cavity is relatively straight forward. Enter square footage calculate or enter the square footage of the attic or area to be vented.

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. 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. See the benefits of attic ventilation a new roof is more than just shingles. Like natural ventilation systems with windowmaster mixed mode ventilation systems utilize sensors to monitor indoor temperature co2 levels and humidity as well as outdoor conditions.

Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof. In winter you need to dump that hot air before it condenses which can lead to rot and mold. The early to mid 20th century saw the development of this concept. Based on this data the system will automatically either chose natural ventilation or mechanical ventilation depending on which system is the most optimal to use.

In order to facilitate this exchange of warm and cool air the general rule of. Roof ventilation is not a new process by any means. Roofing and attic ventilation refers to the way air and moisture enter or leave a home. 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.