Spray Foam Insulation
The highest-performing insulation available. Spray foam delivers superior R-value and a complete air seal in one application — for new builds, renovations, and targeted upgrades.
What is Spray Foam Insulation
Spray foam insulation is a two-component polyurethane material that expands on contact to fill cavities, seal air leaks, and insulate in a single step. Available in open-cell and closed-cell formulations, spray foam delivers the highest R-value per inch of any insulation type and creates a continuous air barrier that eliminates the gaps and voids found in traditional insulation.
It's the preferred insulation choice for attics, basements, crawl spaces, rim joists, and new construction throughout Minnesota. Whether you're upgrading an older home or building new, spray foam provides permanent performance that fiberglass and cellulose simply cannot match.
Insulates and air seals simultaneously
No separate air sealing step needed — spray foam does both in one application, saving time and cost
Highest R-value per inch
Closed-cell foam delivers R-6.5 to R-7 per inch — nearly double fiberglass in the same space
Permanent performance
Spray foam never settles, sags, or loses R-value. It maintains full performance for the life of your home
Why Spray Foam is Ideal for Minnesota Homes
Minnesota's extreme climate demands insulation that doesn't compromise. Traditional fiberglass and cellulose lose R-value when exposed to moisture, settle over time, and allow air to pass through freely. Spray foam maintains its performance in every condition — it doesn't absorb water, doesn't settle, and stops air movement completely.
For homes that face -30°F winters and humid, 90°F summers, spray foam provides the most reliable thermal and moisture protection available. It's why building scientists and energy auditors consistently recommend spray foam as the gold standard for high-performance home insulation in cold climates.
Drafty rooms and inconsistent temperatures throughout the home
Moisture problems in attics, walls, or basement spaces
Energy bills that are much higher than they should be
Ice dams and roof condensation issues
Noise from outside easily heard through walls and ceilings
Existing insulation that has settled, gotten wet, or deteriorated
Benefits of Spray Foam Insulation
Highest R-Value Per Inch
Closed-cell spray foam delivers R-6.5 to R-7 per inch — nearly double traditional insulation. This means better performance in less space, critical for retrofit applications.
Complete Air Seal Built In
Unlike batt or blown-in insulation, spray foam seals air leaks as it insulates. No separate air sealing step needed. This dual function is why spray foam consistently outperforms other insulation types.
Moisture Barrier Protection
Closed-cell spray foam acts as a Class II vapor retarder, preventing moisture migration and condensation in wall and roof assemblies. It manages moisture and insulates in one application.
Structural Reinforcement
Closed-cell spray foam adds measurable racking strength to wall assemblies. It bonds structural components together, improving overall rigidity — a bonus in addition to its thermal performance.
Permanent Performance
Spray foam doesn't settle, sag, compress, or degrade over time. It maintains full R-value for the life of your home, backed by a lifetime product warranty.
Versatile Application
Spray foam conforms to any shape, fills irregular cavities, and adheres to wood, concrete, metal, and masonry. It excels in spaces where other insulation types can't reach or don't perform.
Our Spray Foam Insulation Process
Site Assessment and Preparation
We evaluate the space, determine the optimal open-cell vs. closed-cell application, and calculate target R-values. Surfaces not being insulated are protected. Proper ventilation is established for the installation process.
Professional Spray Foam Application
Certified technicians apply spray foam using calibrated, temperature-controlled equipment. The foam expands to fill cavities completely, bonding to surfaces and sealing every gap. Multiple passes build to the desired thickness.
Trimming, Inspection, and Completion
Excess foam is trimmed for a clean, uniform surface. Thickness is verified with measurement tools at multiple points. We walk you through the completed work and answer any questions about your new insulation.
Spray Foam Insulation Rebates and Incentives
Spray foam insulation qualifies for utility rebates throughout Minnesota. The superior air sealing performance often qualifies for additional incentives beyond standard insulation rebates. We maximize every available dollar for your project.
40% of cost up to $1,200 each for attic and wall insulation, plus $600 for air sealing. Participating contractor required.
$1,500 wall insulation, $1,300 attic + air sealing combo, $200 rim joist add-on. Gas-heat customers; Rebate Eligible Installer required.
50% of cost up to $750 sidewall, $650 attic + air sealing, $425 foundation/rim joist combo. Authorized Insulation Contractor required.
40% of cost up to $1,000 attic, $1,000 wall, $800 air sealing — $2,800 annual cap per home. Electric primary heat required.
For qualified customers through our lending partners
For full details on available incentives, visit our rebates and incentives page. Not sure which utility serves your area? We'll help you figure it out during your free home assessment.