Spray Foam Insulation in Madison, WI & Rochester, MN
Your Go-To Spray Foam Insulation Company
Spray foam is one of the most effective insulation materials available today, and our trained specialists know exactly how to install it for the best results. At Larson Home Services, we bring years of on-the-job experience, top-tier equipment, and a commitment to high-quality spray foam insulation in Madison, WI.
As a locally trusted spray foam insulation company, we’re proud to help homeowners across Wisconsin and Southeastern Minnesota create safer, more comfortable living spaces. When you work with us, you’re working with a team that values transparency, quality workmanship, and long-term results.
What Is Spray Foam?
Spray foam insulation is a high-performance material applied as a liquid that quickly expands into a thick, protective foam. As it expands, it fills cracks, gaps, and hard-to-reach spaces, creating both insulation and an airtight seal in one step. This makes spray foam one of the most effective ways to reduce heat loss, stop drafts, and improve your home’s overall energy efficiency.
Unlike traditional insulation, spray foam adheres directly to surfaces and expands to form a custom fit. This strong bond helps prevent air leaks, excess moisture, and unwanted heat transfer.
Types of Spray Foam Insulation
Spray foam insulation comes in different formulations designed for different applications. The two most common options for residential use are 1-part spray foam and 2-part spray foam. Both expand to fill gaps and create an air seal, but they differ in how they cure, how much they expand, and the scale of projects they’re best suited for.
1-Part Spray Foam
1-Part spray foam, sometimes called single-component foam, is packaged in a single can and cures using moisture in the air. It is designed for small-scale sealing jobs rather than full-home insulation projects.
How It Works
- Applied directly from a handheld canister
- Expands up to 1 inch, depending on the product
- Uses ambient humidity to harden and cure properly
2-Part Spray Foam
2-Part spray foam, also known as dual-component or “kit foam,” is a professional-grade insulation material and the type most commonly used by spray foam insulation contractors for full installations. It includes two separate chemicals stored in different tanks that mix at the spray nozzle.
How It Works
- Components mix during application to create a chemical reaction
- Expands over 30 times its liquid size depending on the formula
- Cures within minutes, allowing for faster project completion
Advantages of Spray Foam
Because spray foam expands and adheres to surfaces, it provides advantages that traditional materials simply can’t match. Below are the key benefits of choosing spray foam insulation:
Higher R-Value per Square Inch
R-value measures how well insulation resists heat flow, and spray foam consistently delivers one of the highest R-values per inch on the market. R-value helps determine how effectively insulation keeps warm air inside during winter and blocks heat from entering in summer.
Closed-cell spray foam often reaches R-values of 6.5 or higher per inch, making it significantly more efficient than fiberglass batts, which generally average between R-2.9 and R-3.8 per inch.
Noise Reduction
Spray foam’s dense structure absorbs and dampens sound, making it an excellent option for reducing noise between rooms and floors. As the foam expands, it fills cracks and small gaps that would otherwise allow sound to travel.
Homeowners notice quieter living spaces and less outside noise, which can be especially helpful in busy neighborhoods or homes located near roads, train lines, or commercial areas.
Creates an Impenetrable Air Seal
One of the major advantages of spray foam insulation in Madison, WI, is its ability to create a seamless, airtight barrier. Traditional insulation can slow heat transfer, but it cannot stop air movement through gaps, cracks, and framing joints.
Spray foam, on the other hand:
- Expands into tiny openings
- Bonds tightly to surfaces
- Seals around plumbing, wiring, and framing
- Prevents heat loss and heat gain driven by air leaks
Waterproof
Spray foam is moisture-resistant and helps prevent water intrusion in vulnerable areas. Once cured, the foam becomes rigid and impermeable, allowing it to act as a barrier against minor water exposure. It also helps reduce the risk of condensation buildup, mold growth, and water damage.
Easy Installation
Spray foam insulation in Madison, WI, is designed for quick and easy installation. Once mixed and applied, the foam rapidly expands to fill gaps, cavities, and uneven surfaces. Compared to cutting and fitting fiberglass batts, spray foam provides a smoother, more complete installation with fewer steps and less potential for air gaps.
Can Lower Your Energy Bill
Because spray foam delivers superior insulation and air sealing, it reduces the workload on your heating and cooling systems.
As a result, many homeowners see noticeable drops in their monthly utility costs. Over time, these savings can help offset the cost of installation, making spray foam a smart long-term investment in comfort and energy efficiency.
Where to Use Spray Foam Insulation?
Spray foam insulation is one of the most versatile materials for improving comfort and energy efficiency throughout the home. Because it expands to fill gaps and bonds directly to surfaces, it works well in areas where traditional insulation struggles.
Below are the most common places where spray foam delivers the strongest results:
- Attic Spaces: Spray foam seals the spaces between rafters, penetrations, and framing joints, reducing drafts and improving temperature control throughout the house.
- Crawl Spaces: Crawl spaces often struggle with humidity, cold floors, and musty odors. Spray foam creates a moisture-resistant barrier that helps stabilize temperatures and prevent mold growth.
- Rim Joists: Spray foam provides an airtight seal around framing seams and penetrations, preventing drafts and keeping more conditioned air inside the home.
- Exterior Walls: Spray foam fills every gap within wall cavities, creating a durable thermal and air barrier. This helps improve year-round comfort, reduces noise transfer, and increases the home’s overall energy efficiency.
- Basement Walls: Basements can easily absorb moisture from the surrounding soil. Spray foam insulation forms a rigid, moisture-resistant layer on basement walls to help reduce dampness and prevent air leakage.
- Cold Surfaces: Spray foam is ideal for insulating cold, uneven, or difficult surfaces where traditional insulation cannot make full contact. It creates an even layer of coverage, which helps reduce condensation and improve overall comfort.
Your Go-To Spray Foam Insulation Contractor in Madison, WI & Rochester, MN
When it comes to upgrading your home’s comfort and energy performance, the team at Larson Home Services is here to help. As a trusted spray foam insulation contractor serving Madison, WI, Rochester, MN, and the surrounding areas, we take pride in delivering long-lasting solutions.
With more than a decade of experience, an A+ BBB rating, and thousands of successful insulation projects completed, we’re committed to making your home efficient and comfortable all year long.
If you’re ready to reduce monthly utility costs and enjoy better comfort year-round, contact Larson Home Services today to schedule your free insulation consultation and see what spray foam can do for your home.