Attic Vents Purpose

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

Attic vents purpose. Attic ventilation in the winter. 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. Why plumbing air vents are important. Attic must have 5 sq.

Its drainage and vent functions are actually two systems. 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.

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. It channels the exhaust gases to the vent and helps maintain proper atmospheric pressure in the waste system. Throughout the balance of this digest the terms attic and roof will and can be used interchangeably.

Good attic ventilation is important for preventing ice dams in the winter. Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. Your home s plumbing system is designed to efficiently remove water and waste.