FAQ

Frequently Asked Questions About Spray Foam Insulation

Q?
Does spray foam insulation have building code approvals?
A.
Yes. Spray foam insulation is approved by the Residential and Commercial building codes.

Q?
What is the difference between vented & unvented attics?
A.
Unvented attics use air-impermeable insulation on the underside of the roof deck as a barrier to prevent condensation of moisture. Vented attics allow hot and/or moist air to escape to the exterior by air flow.

Q?
What is the difference between open cell and closed cell spray foam?
A.
This is a long one. Read more about each on their own dedicated pages:

Closed Cell Spray Foam

Open Cell Spray Foam

Q?
How does spray foam insulation save money when compared to fiberglass or cellulose?

A.
While the initial cost of installing SPF maybe higher than other traditional insulation, homeowners are able to save more money per month to more than make up for this difference. SPF can reduce heating/cooling costs (compared to traditional insulations) by up to 50%. SPF can also save money by way of a reduction in the required sizing of the HVAC unit.

Q?
Will spray foam insulation “settle” or fall from the walls or ceiling over time?
A.
Spray foam insulation adheres to the substrate and will not settle or fall out of the walls or ceiling.

Q?
How long does spray foam last?
A.
Indefinitely. As an inert, long lasting polymer, residential and/or commercial structures are a great places for spray foam insulation.

Q?
Is spray foam considered an air barrier?
A.
Yes. Spray foam will stop air infiltration in commercial/residential buildings. This will also keep out moist/humid air and dust/pollen. Fiberglass batts and loose cellulose will not stop air infiltration allowing dust, pollen and moisture into a home/building.

Q?
Does spray foam insulation aid in the growth of mold?
A.
Spray foam insulation offers no food value; therefore it does not support bacteria or fungal growth. It also does not retain water, making it an unappealing environment for fungal spores.

Q?
How is spray foam installed?
A.
SPF is a two component liquid that is sprayed in place by a trained professional applicator. The two liquids, heated under high pressure, mix at the spray gun reacting with each other causing the liquid to expand rapidly and cure as a rigid/semi-rigid foam.

Q?
How does spray foam insulation control moisture movement and condensation?
A.
Moisture damage within a building envelope is mainly the result of warm moist inside air being exchanged with the cold dry outside air with your walls. As moisture in the air condenses, it forms dew within the insulation. Because spray foam insulation is air sealing, this moisture movement and condensation do not occur.

Q?
What is the flame spread and smoke development of spray foam insulation?

A.
Spray foam has a flame spread of <25 and smoke development of <450. With these results, spray foam is a Class 1 rated material. This is the highest rating an insulation product can receive for residential and commercial applications.

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