How Attic Ventilation Affects Your Home & Your Pocketbook
Attic ventilation isn’t usually at the top of most homeowners’ minds. Yet poor attic ventilation can have
very detrimental effects on your roof. According to the Federal Housing Administration, your attic
should have one square foot of ventilation for every 300 square feet of attic, but many attics don’t have
enough insulation. Should you really be concerned about insufficient insulation? The answer to that is a
Adverse Effects of Poor Attic Ventilation
If your attic doesn’t have enough ventilation, the attic interior can reach temperatures upwards of 150
degrees or more during summer! Proper ventilation systems are designed to bring down the heat in
your attic so that it corresponds with the outside air temperature. If your attic isn’t well-ventilated, the
trapped heat can damage your shingles. This hot air can also raise indoor temperatures, causing your
HVAC unit to work harder than it should. Poor ventilation allows moisture buildup, leading to mold and
mildew growth, and even rust on metal components.
During the winter, heat that is trapped inside a poorly ventilated attic will cause snow on the roof to
melt. If the temperature is below freezing, this precipitation will refreeze at the colder edge of the roof,
causing ice dams which can lead water to back up and leak underneath roofing shingles.
Benefits of Good Ventilation
Proper ventilation allows fresh air in and lets hot, moist air out. This stops both moisture and heat from
building up in the attic, which prevents roof deterioration. It can help you save money since your air
conditioner won’t have to work as hard to cool down your interior.
Good attic ventilation also extends the life of your roofing system since excessive heat can cause
premature shingle failure. This is another money-saving benefit since you won’t have to worry about
replacing your roof before the end of its expected lifespan. Installing proper attic ventilation can prevent
a host of issues and save you from major headaches.
If you suspect that poor attic ventilation is causing issues for your roof or the interior of your home,
contact Valiant Home Remodelers. We are located in Carteret, NJ, and serve all surrounding areas. Call us today at (732) 333-6223 to request a free consultation and estimate!