How Does Attic Ventilation Work

Are ridge vents better.

How does attic ventilation work.

Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. The attic fans are fitted with thermostats that will switch on and off the fan depending on the homeowner s preference. Ideally this will lower the high temperatures that have built up in your attic. When it is cold outside the ventilation system will work by maintaining the cold temperature so that ice will not melt on the roof and create ice dams.

This air is then exhausted through the fan to the outside. Most effective ventilation uses a ridge and soffit continuous ventilation system but even these designs can vary from roof to roof. 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. It helps minimize the impact of ice damming.

An attic ventilator is essentially a port where air can escape to the outdoors. It promotes a cool dry attic. An attic fan works by drawing in cool air to the attic space that pushes out the hot air through vents. 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.

Hot air exhaust vents located at the peak of the roof allow hot air to escape. Proper attic ventilation offers all these benefits. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Attic fans exhaust hot air from your attic to the outside.

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 such doing the attic fan will reduce the temperature in the attic space that in turn cools down the whole house. It allows outside air to flow naturally upward and out of attic. At first it may seem odd to add insulation for warmth and then purposely allow cold air to.

It helps prevent moisture from becoming trapped in insulation structural wood shingles and roof deck it. Fresh air is pulled in from your soffits and or roof vent creating a draft through your attic. Soffit vents may leave air trapped at the top of your attic. The purpose of attic ventilation is so that heat can leave the attic when the air conditioner turns on and is trying to circulate cold air around the house.

Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks. About attic ventilation natural attic ventilation.