Attic Vents Purpose

The vent stack is the pipe leading to the main roof vent.

Attic vents purpose.

Your home s plumbing system is designed to efficiently remove water and waste. To install the rafter vents staple them directly to the roof decking. It channels the exhaust gases to the vent and helps maintain proper atmospheric pressure in the waste system. 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.

Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. Good attic ventilation is important for preventing ice dams in the winter. 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. Attic must have 5 sq.

Its drainage and vent functions are actually two systems. These can be ridge vents wind turbines or the flat vents your roofer wants to install. Rafter vents come in 4 foot lengths and 14 1 2 and 22 1 2 inch widths for different rafter spacings. Throughout the balance of this digest the terms attic and roof will and can be used interchangeably.

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. You would think that venting an attic would be counterintuitive in the winter or cold months. 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.