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Building Science

Enter to receive 25% off your job! We will deduct 25% off the first $5000 of your job (minimum of $1000 job estimate) for visiting us at the Lethbridge Home & Garden Tradeshow. Offer is valid until March 30, 2015. Please take some time to look through our site. We offer lots of information and videos all about Spray Foam Insulation. We would love to come give you a free quote. Thanks for coming to see us at the tradeshow.



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FAQs for Professionals

How does spray foam insulation seal my building?
Is thermal barrier required and when is it needed?
At what point in the construction should spray foam insulation be applied?
Can spray foam insulation be applied directly to electrical wiring? What about installed electrical devices like recessed lights?

Q. How does spray foam insulation seal my building?
A. Spray foam insulation is sprayed on as a liquid which reacts and expands in place. This expansion action also seals all of the cracks and crevasses in your wall's exterior sheathing. The result is that air can no longer slip in: your building will be less drafty and more comfortable. Air leakage can also introduce moisture into the wall cavity, resulting in wet insulation and mold and mildew. With the sealing effects of spray foam insulation; this will not be a concern.

Q. Is thermal barrier required and when is it needed?
A. A thermal barrier is a covering on the surface of the spray polyurethane insulation which will protect it for at least 15 minutes in the event of a fire. ½-inch gypsum wall board, such as Sheetrock®, is an approved 15 minute thermal barrier.
Building codes require the installation of a thermal barrier between foam plastics (such as spray polyurethane insulation) and any occupied space. Exceptions apply in some cases; review local codes and/or confer with your local building code officials.
The building code provides for an exception to the thermal barrier requirement in attics and crawl spaces where entry is made only for the service of utilities. In such cases, the spray polyurethane insulation must be protected from ignition. Several manufacturers offer a spray-on or hand applied ignition barrier coating for these areas

Q. At what point in the construction should spray foam insulation be applied?
A. Normally spray foam insulation is installed at the same point in the construction cycle as other types of insulation. That is, using traditional building techniques, spray foam should be installed after the rough plumbing, electrical wiring, and heating and air conditioning ducts have been installed. If you decide to seal the entire exterior shell with spray foam insulation, it may need to be installed in some areas before the entire job is completed; ie. behind showers/tubs, behind electrical panels.

Q. Can spray foam insulation be applied directly to electrical wiring? What about installed electrical devices like recessed lights?
A. Spray foam can be applied directly to electrical wiring. Recessed lights or other fixtures may require a certain amount of air circulation around them for cooling purposes. In these cases, a box can be build around the fixture with gypsum wall board; then spray foam can be sprayed directly to the outside of the box.

topics: Professionals, Education, Installation

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We were living in our 2 car garage while building our 3200 sq ft house with Icynene. We are now living in our home and using the same amount of fuel to heat and cool the house as we were using in the garage.
Gary & Donna,