We install spray foam insulation for homeowners, lake cottage owners, and contractors throughout Lake Geneva and Walworth County — built for Wisconsin winters and up to code. Fast, free quotes.
Lake Geneva winters are long and cold, and a lot of the area's housing stock — from older lakefront cottages to homes built decades ago — wasn't insulated to today's standards. Spray foam creates an air-tight seal that fiberglass and cellulose can't match, which matters most in a climate like this. Wisconsin's building energy code also sets specific rules for how insulation, vapor retarders, and moisture control need to work together, so getting the installation right matters as much as choosing the right material.
Walls, additions, and whole-home insulation upgrades.
See residential insulation →Seal hard-to-reach crawl spaces against drafts and moisture.
See crawl space insulation →Turn a seasonal lake cottage into a comfortable year-round home.
See cottage winterizing →Insulation for commercial buildings, pole barns, and outbuildings.
See commercial insulation →Good to know: Wisconsin's energy code (SPS 322) requires vapor retarder and moisture control measures for any dwelling with insulation installed — even if the insulation itself wasn't required by code. Spray foam's airtight seal makes this especially important to get right.
Because spray foam seals so completely, it changes how a home manages moisture compared to older, looser insulation. That's exactly why the vapor retarder and ventilation rules exist — they keep a tightly sealed home from trapping moisture where it shouldn't be. Following code isn't just a formality here; it's what keeps a spray foam job performing well for years instead of causing problems.
Closed cell foam is denser and has a higher R-value per inch, making it the common choice for most walls, roof decks, and areas where structural rigidity helps. Open cell foam expands more and is useful for filling irregular cavities, though it has a lower R-value per inch and is more common in interior wall applications. Which one makes sense depends on the specific area being insulated.
Square footage, whether the job calls for open or closed cell foam, and how accessible the space is (a straightforward attic vs. a tight crawl space vs. new construction framing) all factor into price. A quick call gets you an accurate quote based on your specific project.
Yes. Wisconsin's building energy code (SPS 322) sets minimum R-value, vapor retarder, and moisture control requirements for one- and two-family dwellings. Notably, the vapor retarder and moisture control rules apply to any dwelling with insulation installed, whether or not that insulation was required under the code — so it's worth doing correctly even on a simple upgrade.
Closed cell foam is denser, has a higher R-value per inch, and adds some structural rigidity, making it the common choice for most walls and roof decks. Open cell foam expands further and fills irregular gaps well, which makes it useful in hard-to-reach cavities, though it has a lower R-value per inch.
Yes, spray foam works for both new construction and retrofits. Older homes and lake cottages often see the biggest comfort improvement, since many were built with minimal or outdated insulation to begin with.
Cost depends on square footage, whether it's open or closed cell, and how accessible the area is (attic vs. crawl space vs. new construction walls). Because those factors vary a lot, the most accurate number comes from a quick call.
We install spray foam insulation throughout Lake Geneva and the surrounding Walworth County communities, including:
Don't see your town listed? Call us anyway — we cover most of Walworth County and can often help just outside these areas too.
Tell us about your project and we'll get you a fast, free quote — no obligation.
Call (872) 216-7609 Request a Quote Online