Under Roof Air Flow System

In cool or cold weather conditions scientists confirmed that direct nailed asphalt shingle roofs had significantly larger heat loss than attics with metal shakes and above sheathing ventilation.

Under roof air flow system. The early to mid 20th century saw the development of this concept. Research has confirmed that creating an air space under a metal roofing system will increase energy savings during both summer and winter months. The roof design should provide plenty of air space for insulation and air flow under the roof and eaves. A new roof is more than just shingles.

Hot air exhaust vents located at the peak of the roof allow hot air to escape. And a correctly designed system will precisely balance the intake and exhaust ventilation under the roof so that the attic is slightly pressurized preventing conditioned air from being sucked out too quickly through the vents thus increasing heating and cooling costs. For the best results place roof ventilation near the roof s peak and soffit vents in the eaves. Air flows in through the soffit vents and out through the roof vents.

When stale overheated air in your home or attic is vented out and fresh air is pulled in you have an air exchange effective ventilation requires a balancing act. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. Roof ventilation is not a new process by any means. 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.

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 building. The term refers to a system which allows air to flow through the intake and exhaust. We chose rectangular hooded roofing vents and rectangular soffit vents because they re easy to install. Roof ventilation ventilation provides the conditions that allow air to flow out with the hot air and in with the cool air.

Metal roof coatings with solar reflectance can help building owners save substantially in annual cooling costs. It is important that air movement occurs and is not impeded by any framing members of the home.