Why Do Roofs Need Ventilation

If you have a hot roof this warm air changes the temperature of your roof decking as it isn t protected by insulation.

Why do roofs need ventilation.

Some high quality metal roofing types reduce heat transference from the outside of the metal roof which can become very hot on a sunny day. A little bit but ventilation is still key to prevent some serious problems that might develop in your building otherwise. The need for roof ventilation wasn t documented until the early to mid 20th century. Ventilation is important because it extends the life of your roof reduces energy costs and reduces indoor temperature extremes.

For clay tile roofs barrel style the issues seen with other types wern t showing up so some started considering the space between the tiles decking as the venting which it does do occasionally an attic might feel to hot or stuffy so a couple of gable vents would be added. Pizza s sister lives in a house in bucks county pennsylvania that was built in the mid 1980s. In a cold climate the primary purpose of ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow and to vent any moisture that moves from the conditioned living space to the attic. Inadequate venting metal roofs do not stop moist warm air from rising through the house and into the attic.

Working in tandem the vents have. Second it allows hot moist air to escape. Roof ventilation is an equally important part of the house too. Insufficient ventilation can lead to moisture problems during the winter and decreased energy efficiency during the summer but too much ventilation can be just as bad if not worse.

It will not only ensure the safety and long life of the roof and the home but it will also ensure the safety of the residents. Does a roof need a ridge vent. Ceiling fans vents and ridge vents all make up the ventilation system that ensures a home attic and roof have ample air to release moisture. See energy smart details in fhb 218 for more on ice dams.

Ventilation allows this moisture to escape and helps bring balance to the moisture that accumulates on the roof as well. Like many others of the era the house has a gable vent at each end of the attic along with soffit vents at the eaves. However a metal roof cannot eliminate high humidity levels. It s the hottest topic in roof ventilation.

Ventilation is the flow of air through a system of intake and exhaust. First it allows cool fresh air to enter into the attic. A balanced attic ventilation system that consists of intake at the eaves soffits or fascias of the roof and exhaust at or near your roof ridge serves two important functions.