Why Do You Need Roof Vents

Roof ventilation is an equally important part of the house too.

Why do you need roof vents.

Any type of roof from tpo to epdm can be either hot or cold. Pizza s sister lives in a house in bucks county pennsylvania that was built in the mid 1980s. In a cold climate the primary purpose of ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow and to vent any moisture that moves from the conditioned. If your attic floor has an area of 1 500 square feet for example you need 10 square feet of ventilation space unless your house has a vapor retarding liner in which case you need 5 square feet.

The area of soffit and roof vents is typically measured in square inches. Like many others of the era the house has a gable vent at each end of the attic along with soffit vents at the eaves. Working in tandem the vents have. How we can help you vent.

Once inside the air heats up and rises higher ultimately exiting through venting at the roof s gables through ridge vents cut into the roof s apex or other vent holes in the roof. If there is not a vapor barrier it is recommended to have one for every 150 square feet. How much ventilation does a flat roof need. Use the factor 1 square foot 144 square inches to convert.

The intent of roof venting varies depending on climate but it is the same if you re venting the entire attic or if you re venting only the roof deck. Take for example ridge vents. A cold roof or hot roof. It s the hottest topic in roof ventilation.

It will not only ensure the safety and long life of the roof and the home but it will also ensure the safety. Hot roofs have the roof deck then insulation then the roofing material. Why plumbing air vents are important. The vent stack is the pipe leading to the main roof vent.

These specialty vents do not affect the. Your home s plumbing system is designed to efficiently remove water and waste. As the air leaves it creates negative pressure behind it sucking in cool air from below into the soffits and creating a self repeating ventilation process. While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all.

The answer depends on the type of roof you have. It channels the exhaust gases to the vent and helps maintain proper atmospheric pressure in the waste system. Your roofing contractor can provide the exact number of roof vents needed for your particular roof but the rule of thumb is one vent for every 300 square feet if there is a vapor barrier in the attic. It depends on where the insulation is installed.

Its drainage and vent functions are actually two systems. I have roof vents so i have roof ventilation. How many roof vents do you need. When you consider the elements that most buildings have to face it shouldn t be difficult to understand why you need to make sure that you have the best roofing you can.