Does spray foam insulation have building code approvals?
What is the difference between vented and unvented attics?
What is the difference between open cell and closed cell spray foam?

Open cell:

  • Low density (.5lb per cubic foot).
  • Expands about 100 times its original volume when applied.
  • Forms a semi rigid/flexible insulation.
  • R-value is between R3.4 to R3.9 per inch.
  • Forms an excellent air barrier.
  • Are vapor permeable to allow water vapor molecules to flow through the foam.
  • A good soundproofing material


Closed cell:

  • Medium density (2lbs per cubic foot).
  • Expands about 40 times its original volume when applied
  • Forms a rigid insulation (adds structural strength).
  • R-value is R6.0 or higher.
  • Forms an excellent air barrier.
  • Able to reject bulk water and block mass transfer of moisture that may cause mold.
  • Applied at 2” or more, closed cell SPF is a vapor retarder material.


How does spray foam insulation save money when compared to fiberglass or cellulose?
Will spray foam insulation stay in place?
How long does spray foam last?
Is spray foam considered an air barrier?
Does spray foam insulation aid in the growth of mold?
How is spray foam insulation installed?
How does spray foam insulation control moisture movement and condensation?
What is the flame spread and smoke development of spray foam insulation?

Is there an odor? If so, should I be concerned?
Can I make my house too airtight?

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