Why Is My Attic So Hot

Why Is My Attic So Hot
  • Author: Amanda Arnold
  • Posted On: November 24, 2021
  • Updated On: August 21, 2023

Beyond boosting your energy cost and making you sweat, an overheated attic has far more serious repercussions. A poorly ventilated attic can bake your shingles and cause damage to your roof.

A multimodal method that uses both venting and insulation is the finest attic cooling solution. The purpose of this essay is to assist you in avoiding the dangers of your attic overheating, which can result in increased power costs and future roofing issues.

Several factors could be causing your attic to get extremely hot. There’s a lot that could be making your attic the hottest spot on Earth, from science to your home’s insulation. Asphalt shingles on the roof can be baked and deteriorated by an overheated attic.

It can also make your air conditioner work harder than it needs to, resulting in higher energy bills when the temperature rises. Consider the following techniques for lowering the temperature in your attic to avoid these issues:

What Are The Reasons Behind Hot Attic In Summer?

Do you recall when you first learned about how heat rises? When you heat your home in the winter, the heat can rise to clear up into the attic. This is an issue since all of the air you’re paying to heat is escaping via the attic. If you have air-flowing insulation in your attic flat, your warm air will pass through, but it will also stick up there.

Proper ventilation is also important, and if you don’t have it in the soffit vents or gable vents, you’re trapping heat up there.

Heat will radiate through the shingles and pool in your attic on hot summer days, creating heated air. Poor ventilation is the most common cause of hot air build-up in your attic. Whether your home is old, new, recently remodeled, or has been neglected for a decade, your attic ventilation is likely in need of some attention.

Attics become extremely heated due to a lack of sufficient insulation and poor air sealing. Many people believe that if their attics are overly insulated, hot air will be trapped. It’s crucial to remember that attic insulation is crucial for maintaining consistent attic temperatures.

You’ll have a hard time keeping the heat from your attic from leaking into the rest of your house if you don’t have adequate insulation.

How To Tackle The Hot Attic?

There are two methods for removing hot air from your attic. One option is to take a more proactive approach and install electric ventilators and fans to remove hot air whenever it reaches a specific temperature. Installing vents and other openings that allow heated air to escape naturally is another more passive option.

Install More Vents

Increase the number of vents and exhausts in your attic and roof to allow hot air to travel in and out naturally. While most home codes specify a certain amount of vent opening based on the square footage of your attic, adding extra is never a bad idea.

Increase the number of soffit vents and roof exhaust to allow hot air to travel through the attic without spending money on a fan.

Add An Attic Fan

If you decide to use an active attic ventilation system to exhaust hot air, such as a solar attic fan, ensure you have enough incoming vents to support the additional airflow. You enhance general ventilation in your attic by pushing stuffy air out and letting cooler, fresher outside air in.

Attic fans and other electric ventilation equipment are excellent at extracting hot air from attics. When you connect one of these to a thermostat, the fan will kick on when the temperature in the attic rises.

Insulation Can Help To Cool Down The Attic

You don’t want any vents up there if you have insulation on the roof deck of your attic. The attic floor should be free of insulation for this insulation system to perform properly. Heat will rise into the attic, circulate about, and then return to your home in this manner. This is particularly true if you employ air-sealing insulation.

The air will rise, cool, and fall back into the remainder of your house as it heats up. You want your home’s air to circulate like this, and roof deck insulation can help.

There is no easy method for the air to circulate back down if the attic flat is insulated and there is no venting or the venting is obstructed, resulting in a very hot attic. This is why insulating the roof deck may be the most effective way to deal with an overheated attic.

Air Leakage Is The Main Cause Of Hot Attic

Your home’s construction envelope can be insulated to help it become a conditioned environment. Insulating the entire building envelope, which is essentially the components of your home that divide the outer environment from the house’s interior, will delay or stop air leakage, depending on the insulation you pick.

Because of the air leakage, your home is significantly hotter than you prefer.

Identifying spots where air may be escaping can help you keep unwanted heat out of your attic. Small pieces of fiberglass insulation or expanding foam can seal plumbing pipes and small wire holes. You can also use the caulk to seal the leaking air points.


A hot and stuffy attic is an often neglected yet significant aspect when it comes to house energy efficiency. You can keep hot air out of your attic by maintaining the ventilation in your attic flowing properly and implementing precautionary steps.

Use the information in this article to identify the best option for your home and save money on your energy bills right now.

Something is amiss when your attic becomes so hot that you can’t even go into it for a few seconds. Avoid dealing with a hot attic and all of the problems that come with it. Make sure to contact professional and experienced contractors instead.

They’ll install all of the ventilation your roof requires, as well as to conduct a thorough evaluation of your current roof for any previous damage.

Avatar photo
Author: Amanda Arnold

Amanda has been working with ConstructionHow since 2021. Her experience spans over 5 years in the creative niche such as home decor and trends, landscaping, renovations, and custom architectural values. As a home designer expert, she has a keen eye for the latest home improvement trends with accurate facts that readers find impossible to ignore. Being invested in home-building trends is how she has gained her lucrative expertise exploring more to bring a positive ambiance for all homeowners (and even tenants!). Currently, she lives in a beautiful beach home, a source of fascination for her.