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Roof It Forward - What a Homeowner Needs to Know About Roof Ventilation

January 12, 2023

Your roof and attic's ventilation system are an integral part of your home. Knowing how your ventilation system is supposed to operate and its importance allows you to catch any problems early on before there are any expensive repairs. Below we explain what a homeowner needs to know about roof ventilation.

The Purpose Of Roof Ventilation

Proper ventilation from your attic to your roof helps reduce any moisture build-up inside your home to prevent leaks, mold growth, and structural damage. It also reduces moisture built on the outside of your roof by assisting with roof runoff and melting snow & ice. This will help extend the life of your roof by preventing problems that can lead to extensive damage.

Roof vents can also help reduce your energy costs and lower increased indoor temperatures by allowing the heat to escape so your air conditioner doesn't have to work double time in the warmer months. It also helps retain the heat your air conditioner produces in the colder months to help with your home's energy efficiency.

How Roof Ventilation Works

Each roofing ventilation works differently based on code requirements, climate, and roofing materials but there are two constants: intake vents and exhaust vents.

One type of exhaust vent is called a ridge vent. Ridge vents do not require electricity to allow air and moisture to escape from your attic. These vents are typically installed on the ridges of your roof underneath a top layer of shingles.

Intake vents are located on the edges of your roof. The intake vents allow cool air into the attic and coordinate with ridge vents to have warm air forced out, creating a proper roof ventilation system by allowing air to flow in and out.

How Many Vents Does Your Roof Need

A professional roofing contractor can give you a proper estimate on how many vents are necessary for your roof based on the size of your house. The estimated rule they may use is one vent for every 300 square feet of your home size if you have a vapor barrier in the attic and one every 150 square feet of your home size if you do not have a vapor barrier.

Some may think that the more roof vents you have, the better your ventilation will be. However, this is just a myth. Each house needs a specific amount of vents to provide proper ventilation since too much or too little can cause additional problems.

To stay vigilant on roof ventilation problems that could occur as your roof ages, learn more here.

To make sure your roof and attic ventilation is working as they should, schedule a roof inspection with a qualified roofing company. Our team at Roof It Forward offers a free video roof inspection to allow our trained professionals to show you proof of any concerning areas and go over any necessary repairs. Schedule your consultation with us today.


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