Is Spray Foam
Insulation Better than Fiberglass?
If you're having a new home built, or just want to insulate an
existing home, you're probably wondering which insulation is
the best choice. Here are the differences between spray
foam and fiberglass insulation.
Keeping Heat Out of Your
Do you know what an R-Value
is? It's simply a term that is used for insulation's
resistant to heat flow. The higher the R-value of an
insulation is, the better it will keep heat out.
this energy guide on the U.S. Department of Energy
website, standard fiberglass insulation is between R-2.9 and
R-3.8 per inch. But when we look at
this data sheet for the spray foam insulation Heatlok Soy,
we see that Heatlok is actually R-6.6 per inch.
So now that you know that
spray foam insulation has a much better R-Value than
fiberglass, what difference does that actually make to your
The Difference in
A non-profit group named
Habitat for Humanity figured out for themselves what a
difference that R-Value can make in home insulation.
You've probably heard of them, they build affordable housing
So one year, Habitat for
Humanity decides to build two identical houses, but each with
a different type of insulation. One of the homes had
fiberglass insulation, the other had spray foam installed.
They checked the
electricity usage in both homes for five straight months.
When their test was over, they discovered the house with
fiberglass insulation owed the electric company $547 more in
bills than the spray foam house. And that was just five
months, you can probably imagine how much cash the spray foam
house will save over the next 20 years. Click Here
to read their actual case study.
When cold air from outside
of your home mixes with warm air from inside, moisture is
formed. That moisture can eventually form into unhealthy
mold in your attic and walls. According to this
New York Times article, mold in your home can lead to
health problems such as:
Worst of all, if your home
is unprotected against growing mold for too long, removing it
can cost thousands of dollars.
Spray foam insulation can create an airtight seal in your attic or walls.
This prevents warm and cold air from mixing, and moisture from
forming. This is how foam insulation prevents mold
growth. Fiberglass insulation, on the other hand,
doesn't seal off your home. As a result, moisture is
more likely to be formed in your home, and mold is more likely
Insulation and Safety
Some people may think that
because fiberglass is basically glass threads, that it must be
perfectly safe. After all, how can glass be bad for you?
But what you may not realize is that fiberglass is usually
held together with a substance called resin. That resin
can release formaldehyde fumes into your home. Making
fiberglass can also release dangerous styrene vapors into the
What do the experts say
about that? The U.S. Government Environmental Protection
Agency (EPA) released
this guide about air pollution from fiberglass fabrication
in 2005. It states that "People who are exposed to toxic
air pollutants at sufficient concentrations, for sufficient
durations, may increase their chances of getting cancer or
experiencing other serious health effects, such as
reproductive problems, birth defects, and aggravated asthma."
So how does spray foam
insulation differ? It doesn't produce formaldehyde.
When installed properly by professionals, it is not only safer
for the environment, but also for your family.
Which is the Best
Insulation to Use?
So far, you've read facts
from The New York Times, the EPA, the U.S. Department of
Energy, and non-profit groups. And with the other info
presented, you should now understand that spray foam
can cut home
electricity costs up to 50%
can prevent the growth of
formaldehyde fumes into the air
Plus, spray foam insulation
can strengthen the walls of a home, and a house treated with
it usually has a higher resale value. So even though the
cost of spray foam is often twice that of fiberglass
insulation at first, spray foam will save you more money in
the long run.
We're Advanced Foam
Insulation of Louisiana. We specialize in treating homes
with spray foam, but we also make sure that you have all the
facts up front. If you live in the state of
Louisiana and would like to get a free estimate, please call us
today or click here to
reach us by email.