How Roof Ventilation Is Made

Because the roof isn t in play here it doesn t matter how many hips valleys dormers or gables there are.

How roof ventilation is made. Requires a power source. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Because mechanical ventilation involves the insertion of tubes into the airway this increases the chances of various microorganisms entering the lungs. Ventsure 4 foot strip heat moisture ridge vent with weather protector moisture barrier.

Organizations such as the nrca recommend against this roof vent style in cold climates because it can promote ice dams. Roof ventilation is not a new process by any means. 27 lineal feet required. Intake vents located at the lowest part of the roof under the eaves allow cool.

Ventsure 4 foot strip heat moisture ridge vent. By using natural convection they make an opening in the roof that allows both moisture and hot air to escape from the house. 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. Slits in the product allow for air to flow into the attic.

Of course it s unusual for a roof to have no existing ventilation. Ventilation is the intentional introduction of outdoor air into a space. A drip edge vent is made of a corrosive resistant material that sticks out about three inches back from the roof edge and then bends downward over them. In mixed climates ventilation serves either role depending on the season.

They are generally made of very hard plastic but they are also available made from metal and can be bought in a number of different colors so that they will best match the roof of your home. It can also be used to control indoor temperature humidity and air motion to benefit thermal comfort satisfaction with other aspects of indoor environment or other objectives. Choose one of the following products to meet the recommended exhaust nfva of 528 square inches. Ventilation only works when air flows.

Roof ventilation works by allowing air to flow through the attic which prevents it from becoming overheated and causing moisture. A key benefit of venting the attic is that the approach is the same regardless of how creative your architect got with the roof. The fan draws in fresh air from the lower vents pushing the warmest air highest in the roof out through the high vents. It s important to make a thorough assessment of the existing spaces where air may enter and exit the roof cavity.

The early to mid 20th century saw the development of this concept.