Call Us: (208) 356-7000

Shirley Insulation Serving Southeast Idaho
Maximize Comfort In Your New Home Build, through World Class Polyurethane Foam Insulation!

Shirley Insulation – Owned and operated by Kirk Shirley since 1977. We serve Southeast Idaho.

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Why Choose Polyurethane Foam Insulation For Your New Home Build?

To put it quite simply, the purpose of insulation in a home or building is to restrict the flow of heat from inside to the outside. Polyurethane Foam Insulation offers one of the most effective ways to maintain a comfortable temperature inside your home. Today’s home buyer demands energy efficient construction and design in the homes they buy. Polyurethane Insulation meets the requirements of Chapter 26, of the Uniform Building Code.

Man Spraying Insulation

Airtight Seal


Polyurethane Foam insulation forms an airtight seal. Building scientists say that a home should be as tight and seamless as possible. Yet, a typical 2,500 square foot home has over a 1/2 mile of cracks and crevices resulting in a great range of problems most homeowners have come to accept. You can demand better. You can insist on spray foam insulation in your new home! Unlike fiberglass or cellulose, polyurethane foam insulation expands on contact forming an airtight seal eliminating convection currents, the number one source of heat loss; helping maintain a constant temperature throughout the home.

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house structure

Energy Savings


Polyurethane Foam insulation saves 50% more energy than conventional insulation. Polyurethane insulation forms a seamless insulating barrier which minimizes air infiltration; a major source of heat loss. Polyurethane insulation can seal and fill the cracks and seams you could never reach with a caulk gun or weather stripping. Other types of insulation material fail to stop this loss through cracks between the studs and the insulating material. Air infiltration wastes up to 40% of every home heating and cooling dollar.

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man installing insulation

Air Quality


Polyurethane Foam insulation controls air quality. Good building science requires controlled mechanical ventilation. Currents and drafts resulting from traditional insulation are no way to re-condition the air in a home — such wind in the walls just adds discomfort. In a foam insulated home, a standard air recycler effectively replaces stagnant, polluted, interior air with fresh, clean air. How important is that? The EPA estimates that interior pollution concentrations can be 2 to 5 times the air we breathe outside!

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Spraying Insulation

Moisture Control


Polyurethane Foam insulation resists condensation, inhibits rot, and reduces mold. 2 lb. foams, when applied at a thickness of 2.5 inches or more, can act as a vapor barrier. They offer the highest R value per inch of all foam systems. In all climates, condensation within the wall can be a serious problem leading to loss of insulation and rotting of framing members. Unwanted moisture is the number one cause of building damage. But moisture and condensation have virtually no effect on polyurethane insulation.

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Attic Insulation

Sound Dampening


Polyurethane foam insulation means peace & quiet. Noise pollution such as sirens, cars, motorbikes, planes, barking dogs, and construction work can affect sleep and increase stress. Everyone needs peace and quiet. Polyurethane foam insulation helps deaden the sounds of the outside world; creating a tranquil environment.

spray foam insulation installation

Construction Costs


Polyurethane foam insulation saves on overall construction costs. The high R value per inch of our polyurethane insulation allows the homeowner or builder to use 2×4 stud wall construction in exterior walls instead of 2×6 studs required with most other forms of insulation in many climate zones. This can save on framing costs, as well as extended window and door jambs. This simple change also can increase the amount of living space by as much as 35 square feet in a typical 1,500 square foot home. This is like getting an extra closet!

Increase the Structural Strength with Polyurethane Foam Insulation!


Appliance manufacturers have used similar insulation materials for years to produce refrigerators and water heaters with thinner walls. Now you can accomplish the same in your home. Polyurethane is widely used today because it has one of the highest R values for any given thickness among commercially available building insulation. R means the resistance to heat flow. The higher the R value, the greater the insulating power!

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Our Other Services Include:

Polyurethane Foam Roofing Systems

Our foam roofing systems are durable and affordable.

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InsulSafe SP Loose Fill Attic Insulation

We offer blown in fiber glass attic insulation.

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Choose polyurethane foam insulation for a modern quality home.


Choose Us


Shirley Insulation- Owned and operated by Kirk Shirley since 1977. We serve Southeast  Idaho.

Contact Info

Phone No: (208) 356-7000

Coverage Area

Southeast Idaho, Including: Island Park, Ashton, St. Anthony, Rexburg, Rigby, Idaho Falls, Driggs, Victor, Mud Lake, Teton and Tetonia

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