Two homes on the same Stark County street can test at very different radon levels, and the systems that bring those levels down can differ even more. Radon comes from uranium in the soil and bedrock. Northeast Ohio’s mix of glacial till, sand and gravel deposits, and shale bearing bedrock produces plenty of it. How much of that gas reaches the living space, and how a mitigator pulls it back out, depends mainly on what is under the floor. Canton’s housing stock covers more than a century of building styles: brick and frame homes from the city’s industrial boom, postwar ranches and Cape Cods, split levels in the townships, and newer subdivisions in Jackson and Plain. Each one handles soil gas differently. Heating season makes the differences easier to see, because a warm house pulls air up from the ground harder once the furnace starts cycling in October.
Matching the system to the house is the core of radon mitigation in Canton, and Genesis Radon stands behind its matches with a 30 year workmanship guarantee and a lifetime effectiveness warranty. Owner Adam Sklare’s reviews describe clean, careful installs and levels that dropped quickly, including one home that fell from 4 to 0.7 pCi/L within a day of the work. Another review mentions a broken sump pump fixed the same day. Call (330) 819-5816 on a weekday between 9 and 5 to talk through your foundation type.
Early Twentieth Century Homes in the City
What sits below. Many older homes in Canton’s established neighborhoods have basements built with sandstone, brick or early block walls. The floors are often thin, patched concrete, and some still have a section of bare earth under a porch or an old coal room. Settlement cracks are common, gaps at the wall to floor joint are wide, and old floor drains may connect directly to soil.
How the fix usually works. Sub slab depressurization is still the standard method, but these slabs often lack a clean gravel layer underneath, so suction does not travel far. A mitigator will often drill test holes and measure pressure at several points before choosing where the main suction point goes. The job may need a second suction point, sealing of the earthen sections under a membrane, and new seals at old drains.
Routing choices. Interior chimneys and balloon framed walls sometimes leave space for an internal pipe run to the attic. Many owners choose an exterior route instead to keep original plaster and trim untouched.
Postwar Ranches and Cape Cods
What sits below. Houses built from the late 1940s through the 1960s usually have hollow concrete block basement walls, a poured floor, and a sump pit set in clay soil. The open cores inside block walls act like chimneys for soil gas, carrying radon up from the footing and releasing it through cracks and mortar joints.
How the fix usually works. A single suction point under the slab often handles a compact ranch, especially if the original builder laid stone beneath the floor. When readings stay high, block wall depressurization draws from the wall cores as well. The EPA’s technical guidance for active soil depressurization systems treats block walls and sumps as distinct suction options, each with its own sealing requirements.
The sump question. An open sump pit is one of the biggest radon entry points in these basements. Fitting it with a sealed, gasketed lid usually comes first. In some houses the sump itself becomes the suction point, which works well when the drain tile loops around the perimeter.
Split Levels in the Townships
What sits below. The split levels and bi-levels common in Jackson, Plain and Perry townships often combine three foundation types: a basement under one wing, a slab under the family room, and sometimes a crawlspace under an addition. Each section has its own path for soil gas.
How the fix usually works. Treating only the basement can leave the slab level reading high, because the two areas usually have no gravel connection between them. Mitigators often install two suction points tied into one fan. When a crawlspace is part of the mix, it gets its own sealed membrane connected to the same system.
Where to test afterward. A post mitigation test should be placed on the lowest level that is lived in. A second test in the slab family room confirms that every section is covered.
Newer Subdivision Homes
What sits below. Homes built in the last 25 years usually have poured concrete walls, a perimeter drain tile system feeding a sump, and a gravel layer under the slab that lets suction spread across the whole floor. Some builders also installed a passive vent pipe running from the slab to the roof. Ohio does not require that rough-in for every new home, so many houses in the same development have one and many do not.
How the fix usually works. With good gravel under the slab, one suction point and a modest fan often bring a large basement under 2 pCi/L. If a passive pipe already exists, adding a fan in the attic or on the outside of the house can activate it. A test afterward should still confirm the result, since a passive stack alone rarely lowers levels as much as an active system.
Finished basements. Many newer homes have finished lower levels, which limits where the pipe can go. An exterior route through the rim joist and up the siding avoids cutting into finished drywall. An internal route through a utility room and up through the garage keeps the pipe out of sight.
Slab on Grade Homes and Additions
What sits below. Ranch homes and room additions built directly on a slab are common across the area. These floors often sit on compacted fill with a vapor barrier that may or may not be intact.
How the fix usually works. Suction is usually taken through the floor in a closet or garage. In some cases the pipe is drilled in from outside below the slab edge. Cracks and control joints are sealed as part of the job, since sealing helps the system work, though sealing alone rarely fixes a radon problem.
Crawlspace Homes
What sits below. Older cottages, some rural homes outside the city, and many additions sit over crawlspaces with dirt or gravel floors.
How the fix usually works. The preferred method is sub membrane depressurization. A heavy plastic sheet is sealed to the walls and piers, and the fan draws from beneath it. In Canton’s wet clay soils the membrane also cuts down crawlspace moisture, so it often does double duty.
Whatever the house type, keep in mind that the EPA’s map of radon zones is designed to guide programs at the county level, not to predict the reading in one particular home. Only a test on your own lowest living level can tell you which of these situations applies to you.