Anyone who has ever ventured into their attic in the middle of summer knows that the space can become unbearably hot. This excessive heat isn’t just a nuisance. A hot attic can shorten the life of your roof, stress your HVAC system, make your living spaces less comfortable, and increase your energy costs.
Is It Normal for an Attic to Be Hot?
It’s normal for an attic to heat up, especially in the summertime. The sun beats on the roof from the outside, and heat from the home rises from the inside.
So, attics tend to collect a great deal of heat. Attic temperatures can rise to more than 50 degrees hotter than the rest of the house, particularly if the attic is not insulated or poorly ventilated.
Is a Hot Attic Dangerous?
An overheated attic can be expensive, hazardous, and – occasionally – downright dangerous. When an attic is too hot, it can overheat roofing materials, especially asphalt shingles. When shingles degrade in the heat, they allow moisture intrusion and condensation, water leaks, ice damming in winter, and pest incursions.
Excessive attic heat can also degrade attic insulation and damage wooden structural elements in the roof and attic. It can also lead to health-destroying mold issues and pest infestations, and can even become a fire hazard.
Is a Hot Attic a Fire Hazard?
An excessively hot attic can become a fire hazard, especially when electrical wires or mechanicals are present. High heat can break down wiring and attic insulation, creating favorable conditions for overheating, sparking, and outright ignition. If your attic is used for storage, stored items can catch fire and create a rapidly spreading blaze.
How Do You Fix a Hot Attic?
The first steps in fixing a hot attic are improving ventilation and adding insulation. If those don’t provide the desired results, you might consider adding an attic fan or radiant barrier.
A well-ventilated attic should have natural airflow. Installing ridge vents let hot air escape from the attic, while soffit vents allow cooler air to enter.
Another way to prevent a hot attic from hurting your bank balance is to properly insulate the floor beneath it. This reduces the amount of heat transfer between the attic and your home’s living spaces. You might also consider insulating any ductwork that runs through the attic. Also, sealing cracks and gaps between your attic and your living space can reduce the amount of heat entering your living space from a hot attic.
If you are still having issues with an overheated attic, adding an electric or solar-powered exhaust fan can boost airflow and reduce your attic’s temperature. Another option is to install radiant barrier foil under your roof to reflect excess sunlight and to reduce the amount of heat absorbed by your roof.
Do I Need to Vent My Hot Attic?
Properly venting your attic is arguably the best way to prevent excessive heat from becoming trapped in your attic. A balanced system of vents removes both heat and moisture, diminishing the risk of damage to your home and HVAC system, and preventing your energy costs from skyrocketing in hot weather.
Do Attic Exhaust Fans Really Work?
A properly installed attic fan can be highly effective at removing hot air from your attic, lowering attic temperatures, and reducing your energy costs. It’s important to choose the right fan for the size of the attic space and to have adequate ventilation for air intake. Otherwise, a fan can create negative pressure that draws cold air away from the rest of the house.
This is why it is crucial to engage the services of an experienced installer who understands the complex calculus of attic airflow.
Protecting Your Home & Roof for More Than a Century
The Simpson Roofing Company can inspect your attic to ensure that it is properly insulated and ventilated, and to make any modifications necessary to protect your home and its roof. We are a family-owned company, committed to providing exceptional roofing services in the tri-state area for more than a century. We offer residential, commercial, specialty and custom roofing, as well as property maintenance services. Call (973) 794-3500 or contact us online for additional information or to request a free estimate.
Leave a Reply