The Principle Of Attic Ventilation

Attics need to breathe in all climates.

The principle of attic ventilation.

A properly ventilated attic facilitates the natural exchange of indoor and outdoor air in your home. Most building codes require a ratio of 1 150 ventilation space to attic floor space. This yields a total area of 1 104 square feet. Ridge vent must me installed per the manufactures instructions.

The general rule of thumb is to have at least one square foot of vent space for every 150 square feet of attic area. That keeps your attic dry and reduces ice dams. In the summer good attic ventilation reduces heat buildup. One last thought attic ventilation is not there to get rid of heat it is there to get rid of excess moisture accumulating from the home.

Principles of attic ventilation a comprehensive course for understanding and planning attic ventilation systems. If there s a vapor barrier beneath the insulation it can be 1 300. You can also contact your local municipality to check on building code in your area. Throughout the balance of this digest the terms attic and roof will and can be used interchangeably.

Home exterior principles of attic ventilation. Best ventilation is open soffit venting to a open vented ridge vent. After completing this course you will. Intake vents located at the lowest part of the roof under the eaves allow cool.

In the winter warm moist air seeps into the attic from the living space below. Proper attic ventilation will help increase home comfort help ensure the life and performance of roofing materials and may reduce utility bills. Insulation at least r 38 or more is there for heating and. However in order to optimize the benefits of attic ventilation it s important to follow proper principles and procedures.

Principles of attic ventilation 0bsp03 course description. It can do both. Participants will be equipped to evaluate and discern the types of ventilation products and how to design and specify optimal. Good ventilation allows the heat and moisture to escape.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. 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. Understand the specific benefits of attic ventilation for all four seasons of the year. Let s look at the following example.

Jones has an attic space that measures 23 feet by 48 feet. That cuts cooling costs and prolongs shingle life. Participants will be provided an examination of the year round benefits of attic ventilation.