The Science of Experience



R-Value is Only the Beginning of Spray Foam Benefits

Posted by Emillie Lee

Mar 18, 2016 11:30:00 AM

There are so many choices when it comes to home insulation,, and no one choice is truly fit for all situations. However, closed-cell spray foam is an effective and sustainable choice for many construction projects. Its benefits go far beyond an increased resale value. If you're building a home or considering adding additional insulation, we highly suggest spray foam as a sustainable option.


Many problems that arise in buildings as they age are related to poor heat transfer and moisture balance. Typical fiberglass insulation is stuffed into walls with little attention paid to the location of electrical wires and plumbing pipes. Poor configuration can lead to later moisture problems, causing mold buildup. Even with the best fiberglass insulation installation, there are bound to be gaps and compressions that decrease the energy efficiency of the home. These problems are avoided when you choose spray foam insulation. The foam covers all gaps and crevices for better energy efficiency. It also absorbs less moisture over time, so you don't have to worry as much about mold if moisture is present. Since the foam seals to the floor and walls, water seeping in from an outside source is not as much of a concern, either.

Why is spray foam a great choice when building energy-efficient homes? It all boils down to a few factors:

  • The high R value of 6.5 to 7.0 per inch is preferable to that of fiberglass.
  • It creates an air barrier to control the air flow in and out of the spaces behind and between your walls.
  • Its expansion provides additional support for your home's frame.
  • Spray foam can only absorb a very small amount of water, so it makes a good rain barrier.

To learn more about spray foam and building energy-efficient homes, contact NCFIand speak with our qualified associates.

Topics: R-Value, Soundproofing, Air Quality, NCFI