Principles Of Attic Ventilation

Removes heat from the attic.

Principles of attic ventilation.

Principles of attic ventilation 0bsp03 course description. Several purposes of an attic ventilation system are to provide added comfort to help protect against damage to materials and structure and to help reduce energy consumption during all four seasons of the year. During warmer months ventilation helps keep attics cool. Participants will be provided an examination of the year round benefits of attic ventilation.

Attic ventilation has several purposes as we will soon reveal. By removing the hot air from the attic the home is able to stay cooler and the air conditioner runs less frequently. It also helps prevent ice dams. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Proper ventilation uses intake and exhaust vents to help reduce energy costs by removing the hot air from the attic. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. If you understand the principles of attic ventilation you know an effective venting system provides year round benefits. Most building codes require a ratio of 1 150 ventilation space to attic floor space.

However in order to optimize the benefits of attic ventilation it s important to follow proper principles and procedures. Participants will be equipped to evaluate and discern the types of ventilation products and how to design and specify optimal ventilation systems. This prevents the excessive buildup of heat cold and moisture under a roof. Several purposes of an attic ventilation system are to provide added comfort to help protect against damage to materials and structure and to help reduce energy consumption during all four seasons of the year.

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. Intake vents located at the lowest part of the roof under the eaves allow cool. Inadequate ventilation in your attic can do more harm than good. During colder months ventilation reduces moisture to help keep attics dry.