Trusted Spray Foam Insulation Contractor in Oshkosh, WI

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Are you tired of skyrocketing energy bills and drafty rooms in your Oshkosh home or business? Proseal Spray Foam is your premier local partner for high-performance insulation designed to withstand the harsh Wisconsin elements. From historic downtown renovations to modern commercial builds near Lake Winnebago, we provide precision-engineered spray foam and air sealing solutions that guarantee a lifetime of comfort, superior indoor air quality, and maximum thermal efficiency.

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Elevating the Comfort of the Fox River Valley

At Proseal Spray Foam, we understand that Oshkosh properties face unique challenges, from high humidity near the lakes to freezing winter temperatures. Our team specializes in creating airtight building envelopes that go beyond traditional insulation. By utilizing advanced thermal imaging and industry-leading materials, we eliminate cold spots and moisture infiltration, ensuring your interior environment remains stable and cost-effective year-round. Whether you are upgrading an attic or insulating a new commercial facility, our local expertise ensures your project meets the highest standards of the Wisconsin building code.

Our Professional Insulation & Coating Services

Residential Spray Foam Insulation

Residential Spray Foam

Transform your home into a sanctuary of comfort with our residential spray foam applications. We target attics, walls, and basements to create a seamless thermal barrier that keeps your family warm in winter and cool during the humid Wisconsin summers.
Closed Cell Spray Foam

Closed-Cell Spray Foam

Ideal for structural reinforcement and moisture resistance, closed-cell foam is a dense, high-R-value solution. It is perfect for flood-prone areas or external walls where maximum insulation power and vapor barriers are required.

Open-Cell Spray Foam

An excellent choice for interior walls and soundproofing, open-cell spray foam provides incredible expansion properties to fill every nook and cranny. It offers a cost-effective way to achieve air sealing and acoustic comfort in residential settings.
Commercial Spray Foam

Commercial Spray Foam

Protect your business investment with industrial-grade insulation. We handle large-scale commercial projects, providing energy-efficient solutions for warehouses, retail spaces, and office buildings throughout Oshkosh and the surrounding areas.
Blown-in Insulation by Proseal Spray Foam

Blown-In insulation

We offer professional blown-in fiberglass and cellulose options to enhance existing attic insulation. This service is a fast and effective way to fill gaps and improve the overall R-value of your home’s thermal envelope.

Crawl Space Insulation

Don't let a cold floor ruin your comfort. Our crawl space insulation prevents energy loss from the ground up, stopping cold drafts and dampness from migrating into your living spaces.

Air Sealing

Insulation is only half the battle; air sealing is the secret to efficiency. We identify and seal hidden leaks around pipes, wires, and fixtures to prevent conditioned air from escaping your property.

Dense Pack Cellulose

Specifically designed for retrofitting existing walls, dense pack cellulose provides excellent fire resistance and thermal performance without the need for major demolition.

Crawl Space Encapsulation

Protect your home’s foundation and air quality by sealing out moisture and radon. Our encapsulation process involves heavy-duty vapor barriers and sealing to create a clean, dry, and usable under-home environment.

Thermal Barrier Coatings

Safety is paramount. We apply specialized thermal barrier coatings over spray foam insulation to meet fire safety regulations and provide an extra layer of protection for your property.
Fiberglass-Insulation

Fiberglass Insulation

A classic choice for many builders, our fiberglass batt and roll installations are performed with precision to ensure there are no gaps or compressions that compromise your home's efficiency.
polyurea-coatings By Proseal Spray Foam

Polyurea Coatings

Beyond insulation, we offer ultra-durable polyurea coatings. These are perfect for waterproofing and protecting concrete surfaces, roofs, and industrial floors from chemicals, abrasion, and extreme weather.

Mineral Wool Insulation

Block out external noise and internal echoes with a high-performance acoustic shield. This moisture-resistant solution promotes a healthier indoor environment by preventing rot and mold growth, allowing you to enjoy a safer, more serene atmosphere day and night.

Wall Insulation

Say goodbye to "hot spots" and "cold zones." This insulation service creates a tight seal that balances the climate across your entire floor plan, improving indoor air quality and ensuring your family or employees stay comfortable in every season.

Metal Building Insulation

Turn a high-conductivity shell into a comfortable, productive workspace. Our specialized system eliminates the "sweating" and extreme heat cycles often found in large structures, creating a stable environment for both people and temperature-sensitive equipment.

Why Choose Proseal Spray Foam?

Local Oshkosh Expertise

We know the Wisconsin climate and building requirements better than anyone.

Certified Precision

Our technicians are highly trained in the latest application techniques for maximum yield and safety.

Comprehensive Solutions

From air sealing to advanced polyurea coatings, we cover the entire building envelope.

Lifetime Value

Our insulation solutions are designed to last the lifetime of your structure without settling or degrading.
Insulation Services in Annapolis, MD

Discover Oshkosh: Our Local Community Highlights

U.S. Naval Academy

EAA Aviation Museum

A world-renowned destination for aviation enthusiasts, this museum hosts one of the largest collections of aircraft and the famous annual AirVenture event.
Annapolis Historic District

Paine Art Center and Gardens

Known as the "grand estate" of Oshkosh, this historic mansion and its breathtaking botanical gardens offer a cultural escape in the heart of the city.
Maryland State House

Menominee Park & Zoo

Nestled along the shores of Lake Winnebago, this expansive park features a local zoo, walking trails, and beautiful waterfront views for families to enjoy.

Oshkosh Public Museum

Located in the historic Sawyer home, this museum preserves the rich heritage of the Fox River Valley through fascinating exhibits and local artifacts.
Quiet Waters Park

The Grand Opera House

A beautifully restored Victorian-style theater that remains the centerpiece of the Oshkosh performing arts scene, hosting a variety of live events.

Wiowash State Trail

A favorite for local hikers and cyclists, this scenic trail follows abandoned railroad corridors through the lush landscapes of Winnebago County.

Why Proseal is the Right Choice for Your Property

Choosing the right contractor means the difference between a temporary fix and a permanent solution. At Proseal Spray Foam, we don’t just "install insulation"—we optimize your entire building's performance. Our commitment to using premium materials and meticulous site preparation ensures that every job is done right the first time. We take pride in helping our Oshkosh neighbors save money and live more comfortably. Contact us today at (715) 227-6295 to schedule your expert consultation.

Serving Areas: Neenah, WI;

Menasha, WI; Winneconne, WI; Omro, WI; Fond du Lac, WI; Ripon, WI; Berlin, WI; Fox Crossing, WI; Butte des Morts, WI; Larsen, WI.

Counties Served:

Winnebago County, Fond du Lac County, Outagamie County, Waushara County, Green Lake County.

MINI CASE STUDY: Oshkosh Lakefront Efficiency

We recently assisted a homeowner near Lake Winnebago whose 1970s-built home suffered from extreme moisture and high heating costs. By implementing a combination of closed-cell spray foam in the rim joists and crawl space encapsulation, we reduced their air infiltration by 45%. The result was a significantly warmer floor during winter and a total elimination of the "musty lake house" smell.

What Our Customers Say About Us

Ready to Seal Your Home for Good?

Don't let your hard-earned money leak through the roof. Join the hundreds of satisfied customers in Oshkosh who have trusted Proseal Spray Foam for their insulation needs. Phone: (715) 227-6295 Email: [email protected]

Expert Answers to Your Oshkosh Insulation Questions

How does the Oshkosh climate affect my choice of insulation?

Oshkosh experiences high humidity in the summer and sub-zero temperatures in the winter. Closed-cell spray foam is often recommended here because it acts as both a high-performance insulator and a vapor barrier, preventing condensation issues that lead to mold in our fluctuating climate.

Is spray foam insulation safe for historic homes in Oshkosh?

Yes, it is excellent for older homes. Because it expands into gaps, it can insulate irregular wall cavities found in historic Fox River Valley architecture without the need for extensive demolition, while also providing structural reinforcement to aging frames.

How long does the installation process typically take?

Most residential projects in the Oshkosh area can be completed in one to two days. Larger commercial projects or full-house encapsulations may take longer, but we always strive to minimize disruption to your daily routine.

Will spray foam help reduce the noise from EAA AirVenture traffic?

Absolutely. Both open-cell and closed-cell spray foam have excellent sound-dampening properties. They help significantly reduce exterior noise from aircraft, traffic, and neighbors, creating a much quieter indoor environment.

Can I insulate my crawl space if it is prone to dampness near the lake?

Yes, crawl space encapsulation is the best solution for homes near Lake Winnebago. By sealing the ground with a heavy-duty vapor barrier and insulating the walls with spray foam, we stop moisture from rising into your home and damaging your floor joists.

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