Heat Your Home, Not The Outside Air! Here's Why Spray Foam Insulation Is The Best Choice Your Attic Space

If you're wondering why your monthly heating bills are so high, your attic is the likely culprit. In order to prevent warm air from escaping, you need to ensure that your attic is insulated well from the outside. The three main choices for attic insulation are fiberglass, cellulose and spray foam. Of these, spray foam is the best insulator for your attic space due to its ability to create a completely airtight seal. Spray foam insulation may have higher up-front costs, but it saves you money over time. The two main reasons why spray foam insulation is the best type of insulation for your wallet are explained below.

Creates an Airtight Seal, Preventing Warm Air From Escaping

The primary advantage of spray foam insulation over fiberglass and cellulose insulation is that it creates an airtight seal when applied to the decking of your attic. Neither fiberglass or cellulose insulation are capable of creating a fully airtight seal. The foam expands to fill in any cracks or gaps that may be present in the decking and adheres tightly to it, preventing any air from passing through.

This reduces your energy costs by preventing air exfiltration from your attic. During the winter, when you run your central heating system, the warm air will rise up to the attic level. Unless your attic is airtight, the hot air will escape outside. In effect, much of the money you spend on energy costs is wasted by pointlessly heating the outside. By creating an airtight seal, you prevent warm air from escaping — this means that your heating system doesn't need as work as hard to maintain a comfortable temperature in your living space.

Lasts the Entire Lifetime of Your House, Eliminating Replacement Costs

Fiberglass and cellulose insulation share a problem in common — they require periodic replacement in order to maintain their effectiveness. Fiberglass insulation will settle and compress over time, eliminating its ability to insulate your home. Compressed fiberglass insulation no longer acts as a barrier to prevent thermal exchange — it has to remain expanded in order to slow down thermal transfer due to differences in air temperature. Cellulose insulation slowly breaks down over time, since it's made of organic material.

Unlike fiberglass and cellulose insulation, spray foam insulation will last for the entire lifetime of your house without requiring replacement. It does not degrade, nor does the bond between the foam and the decking weaken over time. This saves you money, since you won't have to periodically re-insulate your attic to reduce thermal exchange.

When you have spray foam insulation installed in your attic, it's important to hire a professional contractor to perform the job. Your attic needs to be fully sealed in order for the spray foam to be effective — any part of your attic left exposed to outside air will allow air to escape. To maximize your energy savings, hire a professional spray foam contractor with expertise in making attic spaces fully airtight.