Passive Attic Ventilation System

Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.

Passive attic ventilation system. Passive roof vents encourage natural air flow and work without the aid of motorized fans. Roofing and attic ventilation refers to the way air and moisture enter or leave a home. Natural airflow wind and the temperature differences in indoor and outdoor air help to draw in fresh air and circulate it through the home. In winter you need to dump that hot air before it condenses which can lead to rot and mold.

It alleviates moisture in the winter and heat in the summer to extend roof membrane life. 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. One of the natural types of ventilation systems is where air flows through windows and cracks and around door frames. Whilst it is possible to retrofit passive ventilation solutions to existing buildings it is highly recommended to incorporate passive ventilation during the design phase of any new building project.

The keepa attic vent is used for ventilating attics and or plenum as a roof exhaust vent or as an air intake roof vent. 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. 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.

Roof ventilation achieving calculated continuous and unimpeded airflow through the roof cavity is relatively straight forward. 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. Roof ventilation is not a new process by any means. The early to mid 20th century saw the development of this concept.

See the benefits of attic ventilation a new roof is more than just shingles. Enter square footage calculate or enter the square footage of the attic or area to be vented. The keepa attic vent is built exclusively for flat roof ventilation roof pitch is 2 12 or less. The other is a home s mechanical ventilation system.