Dec 05, 2019

Five Myths About Spray Foam Insulation You Shouldn’t Believe

Spray foam insulation is a mixture of resin and chemicals, such as polyurethane and isocyanates.  As the name suggests, this type of insulation is applied through a spraying method.  As the insulation is sprayed onto a surface, it spreads to fill the entire area.  Having been in business for over 40 years, we’ve had the opportunity to inspect countless attics and discuss insulation with numerous homeowners.  At times, the working knowledge our insulation pros take for granted is not always understood by homeowners.  Here are some of the most widely misunderstood facts about spray foam insulation.

insulation and ventilation

Myth: Over time, the spray foam insulation will shrink.

Homeowners that believe this misnomer often know someone that’s had a rookie install spray foam insulation.  When high quality spray foam insulation is applied in a proper manner, there should be no concern of the material shrinking.  However, if the chemical components were not properly mixed, the temperature of the foam in the truck was incorrect or the humidity levels during installation were outside of the correct parameters, shrinking can ensue.

Myth: Spray foam insulation can’t be installed in the winter.

Although spray foam insulation has temperature provisions, it can be installed year-round.  In instances where an attic’s air temperature is cooler than permissible, insulation contractors can bring in space heaters to bring the attic to the correct air temperature.  Spraying foam insulation in too cold of temperatures means that it will not adhere to the wood as it should.

insulation and ventilation

Myth: Spray foam insulation does a poor job because it is thinner than fiberglass batts

This one makes us cringe because it couldn’t be any further from the truth.  For fiberglass batt insulation to achieve the same R-value as spray foam insulation, much more is needed.  If a pro doesn’t take the time to custom cut fiberglass insulation to accommodate electrical outlets, it’s likely that heat loss is taking place in an attic, as these penetrations cannot be covered.

Watch an Insulation Project Completed by Our Team of Experts: 

Myth: The scent of spray foam insulation is long-lasting.

Upon installation, spray foam insulation will have a pungent odor.  This is part of the reason installers wear respirators and homeowners are required to leave overnight.  However, once the spray foam cures, there should be no persistent odors.

Myth: Spray foam insulation is too expensive.

When compared with fiberglass batt insulation, spray foam insulation will have a steeper price tag.  However, spray foam does a substantially better job at eliminating gaps that fiberglass is notorious for missing.  This creates a more energy efficient home, which results in lower heating and cooling costs.

Browse Our Spray Foam Insulation Projects:

Insulation & Ventilation Reviews:

"Thanks for a great project and managing the process for our attic work. Very impressed with Lindus Construction customer commitment and keeping the project on track."

Bruce H.
Robbinsale, MN
November 8, 2019

Everyone (the steel roofers, spray foam installers, and LeafGuard® installers) was very professional yet personable and friendly. They did a great job while overcoming some difficult problems presented by my old 1 1/2 story house.

Jack H.
Minneapolis, MN
September 11, 2019

"Workmanship is great. Completed timely and cleanup was great."

Loretta D.
Minneapolis, MN
May 17, 2019

"I had a new roof put on, my ceiling insulated, and LeafGuard® gutters installed. The salesperson was great to work with and the crew was amazing! I was kept informed about the process by the crew and the office staff was always available to answer questions. I highly recommend Lindus and will likely have them install new siding."

Tammy D.
St. Paul, MN
May 15, 2019

"Our experience with Lindus was and is terrific! We would recommend you to our friends anytime.  Thanks so much for being there for us."

Leon & Alma S.
Golden Valley, MN
April 5, 2019

"I have been incredibly pleased with all the work that Lindus has done at my home roof, gutters, insulation, egress window, and 3 major remodels over the years. I'm a great fan of Lindus and all the people that work with and for them. Plus follow up is outstanding if there are questions.  I am an extremely happy customer, and looking forward to my next project with Lindus."

Annette A.
St. Louis Park, MN
February 25, 2019
75% Off Installation Labor on LeafGuard® Brand Gutters & Infinity® From Marvin Windows. We Are Also Offering A Complimentary Heat Map Analysis With Insulation Estimates Through October 31st.
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