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Closed Cell Foam

Closed-cell spray foam insulation is one of the most efficient insulating materials commercially available. It is applied in 2” (50mm) lifts and expands 40 times its liquid state, sealing small imperfections in the building envelope (holes, cracks, gaps). These imperfections, if not properly sealed, will eventually lead to poor building performance or worse, moisture accumulation, allergen/pathogen growth, and very possibly structural failure.

The description “closed-cell” comes from the cell structure of the finished insulation material. One cubic inch of Icynene closed cell spray foam insulation contains millions of tiny plastic closed cells. These cells are filled with a synthetic blowing agent HFC 365mfc (zero ozone depletion potential).

The blowing agent is captured within the cells, which contributes to highly efficient insulating properties. In addition, closed-cell foam provides an inherent air barrier and vapour barrier, and excellent resistance to water. The density for closed-cell spray foam is two pounds per cubic foot. This medium density foam provides sheer and racking strength to wall assemblies in building applications. Icynene closed cell foam has an R-value of 5.5 per inch. It also has a lowest global warming potential (GWP) of 782.

Frequently Asked Questions

What is the R-Value?
The R-value is 5.5 per inch.

What is closed cell spray foam?
We use Icynene’s premier closed-cell spray foam insulation product, ICYNENE MD-C-200 v2. It is a one-step air impermeable spray foam product with a built-in vapour retarder that both insulates and air-seals a building for the lifetime of the structure.

How much does it cost?
Contact us for a free quote.

Does Icynene® break down, sag or shrink?
No, Icynene foam insulation is stable. It does not shrink or sag. The reaction that creates Icynene foam insulation is irreversible and it cannot break down into its constituent parts.

Can I make my house too airtight?
The answer is, you have to build tight and ventilate right. With the proper use of exhaust fans and heat/energy recovery ventilators, a building envelope can be made tight while clean, healthy air is circulated through the structure. Air leakage needs to be controlled in houses by making wall and attic assemblies as tight as possible. This not only prevents drafts but reduces the amount of airborne noise and dust from entering the building while ensuring that insulated cavities remain moisture-free.

What makes spray foam better than traditional types of insulation such as fiberglass?
Spray foam insulates and air-seals in one step to control unwanted random air leakage – which traditional cellulose and fiberglass insulation can’t do without the use of extra sealing materials. Traditional insulations can also leave gaps and seams around electrical boxes or light fixtures (compromising performance), but spray foam fits perfectly around all detailing for a complete air-seal. The result is a healthier and more efficient home.

When does spray foam usually get installed?
Spray foam usually gets installed just before drywall installation. Everything including the framing, windows, doors and electrical, plumbing inspections should be completed prior to the installation of spray foam. Typically, following the application of spray foam, the installation of 0.5-inch dry wall will provide the thermal barrier cover when required by the codes. It is best to always refer to your local code requirements.

Can I be in the house when spray foam is being applied?
Due to the chemical process involved in the application, only certified installers, wearing appropriate equipment are permitted during application, and for 24 hours after application.