Spray Foam Insulation Application

Open Cell Foam

Open-cell spray foam is spray-applied as a liquid, expanding to 100 times its volume. Once applied, the product cures within seconds, filling every crack and gap. The tiny cells expand at such a rapid rate that they break apart and fill with air, creating a soft, almost spongy end product. The rapid expansion of open-cell foam creates a perfect air-tight seal using less material than closed-cell foam, thereby creating a lower cost per R-Value.

Spray Foam Techniques
Spray Foam Techniques

Closed Cell Foam

Closed-cell spray foam insulation is a more slowly expanding product, resulting in an expansion of approximately 40 times its initial volume. The closed-cell nature of this type of foam creates a tightly packed cell structure that is more rigid and dense than open-cell foam, giving closed-cell foam a higher R-Value per inch. With closed-cell being four times the density of open-cell foam, the cost per R-Value is higher for closed-cell foam than that of open-cell foam insulation.

Closed Cell Foam

Spray foam insulation is a wildly diverse product in its features and benefits as well as its very unique ability to be applied to a vast range of substrates. We are going to take a look at a number of various substrates that spray foam can be applied to and what steps should be taken to ensure proper adhesion and performance of the foam insulation. A general for all substrates that one may work with when spraying foam is that they must be clean, dry, and free of grease, oil, loose scale or rust, etc. Another rule to follow when spraying onto a new, unknown substrate is to spray a small 2’ x 2’ test area first, leave to sit overnight, and test for adhesion the next day before continuing to spray.

  • Wood
  • Galvanized Steel
  • Bare Steel
  • Stainless Steel
  • Aluminum
  • Concrete
  • Copper
Spray Foam Techniques
  • Glass
  • PVC Plastics
  • Asphalt and Tar
  • Urethane
  • Polystyrene Insulation
  • Earth

Spray Foam Tips & Tricks