Here’s Why Spray Foam Can Regulate Your House Temperature

Updated: Sep. 11, 2023

If you’re looking to keep the house at a comfortable temperature, it may be time to consider spray foam insulation. Here’s why.

Igor Meshkov/Shutterstock
Igor Meshkov/Shutterstock

When it comes to insulating the house, fiberglass tends to be the common form of insulation. However, after comparing fiberglass and spray foam insulation, it’s shocking how fiberglass tends to be the lesser of the two. Although it has deemed reliable over the years, there are way more benefits to insulating your home with spray foam. One of those benefits includes regulating the temperature of your house.

If you’re not familiar, spray foam is a type of insulation that expands after you spray. The foam expands and seals, avoiding any type of unnecessary moisture (which can create mold) or encouraging pests to eat through your walls. It protects the lining of your house, and even can protect the heating and cooling of your house during those unbearably cold or hot days.

Insulation helps to regulate the heat in your home. The U.S Department of Energy explains that insulation will help to heat up sources and places of your home that typical heating patterns wouldn’t. Since warmer air is lighter, it tends to rise, leaving the lower areas of your home in a colder climate. Having spray foam insulation will help to to resist heat transfer, and will help to block any unwanted air infiltration through cracks. Trapping the heat will naturally make your house warmer, compared to using an insulation where heat could potentially leak out. Spray foam is reliable when it comes to air sealing and moisture control, which are two common problems when it comes to insulating and house temperature regulation.

There are three different types of spray fam meant for different types of walls in your house. High-density spray foam is meant for exterior walls and roofing. Medium-density is used for continuous insulation, interior cavity fill and unvented attic applications. Low-density also is used for interior cavity fill and unvented attic applications. Knowing the different types of spray foams is crucial when it comes to regulating the temperature of your house.

Let’s look at a hot day first. Since the sun is beaming down on the top of your house, it only makes sense that the strongest insulation should be at the top. Using a high-density spray on top will block the extra heat and keep your house cool. Attic insulation is also crucial for colder days. With proper insulation at the roof, it will capture the heat that is rising up from your heater, and it won’t leak outside through cracks (high-density spray foam is usually closed cell for this reason).

Spray foam’s strong air sealing and moisture control are key in regulating the temperature of your house. Before you start, here’s how to not use spray foam just in case.