Attic Vents Purpose

Your home s plumbing system is designed to efficiently remove water and waste.

Attic vents purpose.

To install the rafter vents staple them directly to the roof decking. Rafter vents ensure the soffit vents are clear and there is a channel for outside air to move into the attic at the soffits and out through the gable or ridge vent. The vent stack is the pipe leading to the main roof vent. Good attic ventilation is important for preventing ice dams in the winter.

The purpose of these vents is to keep air circulating in the attic which helps control ice dams in winter prevents overheating in summer and controls moisture all. Attic must have 5 sq. Rafter vents come in 4 foot lengths and 14 1 2 and 22 1 2 inch widths for different rafter spacings. While heat migrates in the summer because your attic is acting as a giant pressure cooker in the winter the attic space is colder allowing more room for the heat to rise and bring all that warm cozy.

Attic ventilation in the winter. You would think that venting an attic would be counterintuitive in the winter or cold months. 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. These can be ridge vents wind turbines or the flat vents your roofer wants to install.

Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. Its drainage and vent functions are actually two systems. Some houses do have highly visible have gable vents which are grids placed into the siding near the top of the gable wall or turbines which are much larger than plumbing vents.