Basement Floor Epoxy in Springfield, IL

Basement floor epoxy turns a dusty, stained concrete floor into one that is easy to clean and pleasant to use. In Springfield, IL, it is also the floor job that most depends on testing. A basement slab sits against cool ground, and the city's average relative humidity is around 71%. Warm, damp summer air meets a cool slab and the floor can sweat. Moisture can also rise through the concrete from the soil. Either one can blister or lift a coating, so we measure before we recommend anything.

How we check a basement slab

• Moisture readings at several spots, including near walls and floor drains
• A look for efflorescence, the white mineral crust left when water moves through concrete
• Old paint, sealer, adhesive from past flooring, or tile that has to come off
• Cracks, especially any that are wide, uneven or wet
• Signs of past water: stains on the walls, rust on appliance feet, a working sump pump

Older Springfield basements

About 17.7% of Springfield homes were built in 1939 or earlier and another 16.5% in the 1940s and 1950s, based on 2019 to 2023 American Community Survey figures summarized by Point2Homes. Basements in those houses were often poured thin, patched over the years and painted more than once. Many have floor drains and low spots. We grind off old paint, fill and level where we can, and tell you if a slab is too damp or too broken for a coating to last.

When moisture is present

Some moisture is manageable. We can use a moisture-tolerant epoxy primer designed to go under the coating system on damp slabs. If water is actively coming in, through a wall crack, a failed drain or poor grading outside, that needs fixing first. Putting a coating over a wet slab only hides the problem until the coating fails.

Radon and basement work

An Illinois Times report citing the Illinois Department of Nuclear Safety found 29% of Sangamon County homes above the EPA action level of 4 pCi/L. Sealing a floor is not radon mitigation, and we do not sell it that way. If you are finishing a basement, test for radon first and have any mitigation system installed before the floor goes down, so we can coat around the pipe and seal the floor penetrations neatly.

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Finish options for basements

A solid color epoxy is the simplest and suits laundry rooms and storage. A partial flake broadcast adds some pattern and hides dust. For finished rec rooms and home gyms, a full flake or a smooth satin topcoat gives a cleaner look. Basements see no sunlight, so the UV advantage of polyaspartic matters less here, and epoxy's thicker build helps on uneven older slabs.

Mine subsidence and cracks

Sangamon County is a mandatory county for mine subsidence insurance, and the Illinois Mine Subsidence Insurance Fund places 52,838 of its 92,815 housing units in mine-related zones. Illinois Emergency Management Agency guidance lists cracks in basement floors and walls, especially ones that appear suddenly and widen, as possible signs of subsidence. Most basement cracks are ordinary shrinkage. When one is not, we will tell you before any coating goes down.