How Foam Insulation Keeps Your Home Cool in the Summer
Keeping a home cool in the summer months is usually done by running either a window air conditioning unit or a central air unit. The AC unit and central air unit force the cooler air throughout your house, and when it is properly sealed with insulation, it keeps the air circulating as well. Here is where insulation plays a big role in maintaining a constant, comfortable temperature.
It is important to understand how insulation impacts the conduction - heat transfer – and the convection – airflow – which both contribute to the comfort and energy efficiency of a home.
Conduction is the heat transfer from physical touch, so when the siding or roof of a home gets hot from the sun, it will then make the studs and attic inside the cavity hot. That heat will then transfer to the drywall and the inside of the house.
Convection is heat transferring through airflow. When it’s hot outside and there is any kind of wind, that hot air can move against the house and find a way in through any gaps or holes. Once it gets inside the stud cavity, it will find its way into the home through electrical outlets and creases in unfinished drywall. No one living in Florida is unaware that attics are unbearably hot in the summer. We often experience working in attics of temperatures as high as 150 degrees.
If you don’t have adequate insulation, there is no barrier to keep that heat from getting inside. Foam insulation creates an air seal that keeps that hot air outside.
Injection foam insulation in your existing walls and Spray foam insulation in the attic, crawl space, and rim joist completely fill the spaces where they are installed, including any gaps and crevices which will stop any air leakage and movement.
This air seal will also help to keep the air circulating throughout your home without making a break for it, especially if your entire home is insulated with foam. Completely sealing your building envelope makes your home more comfortable and also more energy efficient.
Traditional forms of insulation, like fiberglass or cellulose, poorly protect a home from airflow and leakage, thus making those materials a poor choice for insulation. When it comes to reducing air leakage, foam insulation is the best option as it provides both heat resistance and an air seal.
Another bonus of having an air barrier in your home is that your air conditioner won’t run constantly in an effort to maintain a constant temperature. This will save you money in the long run on your monthly energy bills as well as maintenance on your AC unit.
Creating an air seal in your home creates a barrier that will hold in those comfortable cooler temperatures while keeping the heat outside. This air barrier is great for making your home more comfortable while saving you money on your monthly energy bills. Homeowners can save around 10 percent on their total energy bills just by sealing air leaks before adding insulation, according to DTE Energy. After the addition of foam insulation, a homeowner could save up to 50 percent on their bills.