Epoxy Flooring in Janesville, WI

Epoxy flooring in Janesville goes on concrete that sees real winters. Climate normals listed for the city put the average January high at 28.3°F and the average low at 11.6°F, with about 36.6 inches of snow a year and a record low of -31°F. A garage slab here spends months under wet slush that freezes at night and melts by afternoon. A coating that is ground into the concrete and sealed across the whole floor keeps that water and salt on the surface, where you can push it out the door.

Brine, salt and your garage floor

Wisconsin uses more than 500,000 tons of rock salt a year, according to the state Department of Transportation figures cited by Channel 3000. Janesville's street operations told the station they were moving toward salt brine and agricultural byproducts to treat roads. Whatever goes on the street ends up on your tires. A 2008 literature review written for the South Dakota DOT by the Michigan Tech Transportation Institute found that sodium chloride usually causes severe scaling when concrete freezes and thaws, and that magnesium chloride is considered more damaging than sodium chloride because it attacks the cement paste. On a bare garage slab that shows up as flaking near the door, rough spots under the tires and white rings where puddles dried.

A city of mixed-age slabs

Janesville was founded in 1835 and has ten historic districts, including Courthouse Hill and Columbus Circle. U.S. Census Bureau survey data for 2019 to 2023, compiled by Point2Homes, put the median year built for the city's homes at 1972. About 14% were built in 1939 or earlier, about 33% in the 1960s and 1970s, and about 22% between 1990 and 2009. Those groups have different floors. Pre-war homes often have detached garages with thin, cracked slabs. Mid-century ranches may have tuck-under or attached garages with old sealers or paint. Newer homes on the east and west sides usually have larger attached garages that need less repair but still face the same salt.

Basements, humidity and radon

Janesville's wettest month is June, at about 5 inches of rain, and summers run humid. A cool basement slab under muggy air can sweat, and moisture moving up from the ground can lift a coating from below. That is why we test basement floors before quoting a system. The EPA recommends keeping indoor humidity below 60 percent and ideally between 30 and 50 percent. The Wisconsin Department of Health Services says about 1 in 10 Wisconsin homes has high radon, and that radon enters through the foundation. A floor coating does not mitigate radon, so we suggest running a $10 to $30 test kit before you finish a basement.

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Systems we install

• Garage floor epoxy: a thick, 100% solids base coat on ground concrete with a clear topcoat that stands up to brine and hot tires.
• Flake broadcast floors: colored vinyl chips scattered into the base coat, which hide salt film and dirt and give the floor grip.
• Polyaspartic coatings: a fast-curing system that can go down in cooler weather and lets you park sooner.
• Basement floor coatings: moisture-tested systems for laundry rooms, workout spaces and finished lower levels.
• Shop and commercial floors: heavier builds for warehouses, light manufacturing, farm shops and service bays.
• Concrete crack and floor repair: filling cracks, rebuilding chipped joints and leveling pitted areas before coating.

Questions to ask any installer

• How will the concrete be prepared: diamond grinding or acid etching?
• Will the slab be tested for moisture first?
• What are the coats, how thick is each one, and what is the topcoat?
• How are cracks, control joints and the edges along the walls handled?
• When can I walk on it, put things back and park, at the temperature on install day?
• Is every line of that in the written quote?

Cost in plain numbers

HomeGuide puts professionally installed epoxy at $4 to $10 per square foot and polyaspartic at $5 to $12 nationally. HomeAdvisor lists an average concrete coating job at about $2,526. Crack repair, removing an old coating and the finish you pick all move the number, so we give a written price after seeing the floor.

Janesville is home base. We coat floors through Rock County and into neighboring Dane, Green, Jefferson and Walworth counties, plus the Illinois side of the state line. That covers Beloit, Milton, Edgerton, Evansville, Clinton, Footville, Orfordville and Brodhead nearby; Whitewater, Fort Atkinson, Jefferson, Delavan and Elkhorn to the east; Stoughton, McFarland, Oregon and Fitchburg to the north; Monroe to the west; and Roscoe and South Beloit in Illinois. The floors change as you go. Beloit, Evansville and the older parts of Janesville have many homes from before World War II. Fitchburg and Oregon grew fast in the 2010s and have newer attached garages. Rural Rock County has machine sheds and farm shops with large, heavily used slabs. Each town page covers what we know about the homes and floors there.