Attic Vents Are They Necessary

However static venting usually requires numerous low profile vents installed in a line near the roof s ridge.

Attic vents are they necessary. In cold climates the primary purpose of attic or roof ventilation is to maintain a cold roof temperature to control ice dams created by melting snow and to vent moisture that moves from the conditioned space to the attic ventilation acts to bypass the vapour barrier created by most roof membranes. In the summer good attic ventilation reduces heat buildup. Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside. If there is not a vapor barrier it is recommended to have one for every 150 square feet.

Advantages of proper roofing ventilation. The installation of roof vents is a crucial part of roof design because it allows for proper attic ventilation which may help prevent condensation and early aging of your roofing materials. The ventilation that controls moisture from condensation and regulates the temperature in your attic relies on air circulation. Most effective ventilation uses a ridge and soffit continuous ventilation system but even these designs can vary from roof to roof.

Good ventilation allows the heat and moisture to escape. In a properly designed passive system air enters through the soffit. This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

How we can help you vent. Your roofing contractor can provide the exact number of roof vents needed for your particular roof but the rule of thumb is one vent for every 300 square feet if there is a vapor barrier in the attic. Hot air exhaust vents located at the peak of the roof allow hot air to escape. How many roof vents do you need.

Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks. Soffit vents may leave air trapped at the top of your attic. That cuts cooling costs and prolongs shingle life.