Flat Roof Ventilation Systems

The answer depends on the type of roof you have.

Flat roof ventilation systems.

There are two types of flat roof systems warm and cold roofs which affect the positioning of the ventilation. The rubber boot conforms to the exact size and shape of the pipe to keep water from leaking in. Flat roofs are hard to replace. The aluminum base holds the vent in place with built in flashing.

When thermal insulation is placed below the deck the ventilation must also be on the underside. No matter what month it is hot air will accumulate in the attic at the peak of the roof. How much ventilation does a flat roof need. 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.

Flat roof ventilation allows for the circulation of air in the property particularly for warmer rooms in residential buildings. In summer and warmer months outside temperatures intensify the effects of this heated air. 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. Flat roof ventilation is achieved by creating air changes to the attic or plenum.

Residential homes with flat roof vents make use of the boot vent. Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents. This is a basic venting system that simply acts as a base and holder for piping that is coming through the roof. The keepa attic vent is used for ventilating attics and or plenum as a roof exhaust vent or as an air intake roof vent.

It depends on where the insulation is installed. Ventilation is crucial to these areas as they affect the building as a whole both inside and out. Roof ventilation is not a new process by any means. The early to mid 20th century saw the development of this concept.

A cold roof or hot roof. This could mean flat roofs may not raise the same red flags they used to. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. Roofing and attic ventilation systems are designed to work year round to balance the intake of cool air and the outflow of warm air in the home.

Any type of roof from tpo to epdm can be either hot or cold. All things being equal wind driven turbine vents also known as a whirlybird roof vent do move more air than flat vents but only when the wind blows. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs. The keepa attic vent is built exclusively for flat roof ventilation roof pitch is 2 12 or less.