Spray Foam Insulation in Hamilton, OH

Spray foam insulation in Hamilton usually involves an older house than in the surrounding suburbs. ACS data on Point2Homes shows about 27.4% of Hamilton's housing predates 1940 and 20.3% is from the 1950s, with a median year built of 1956. The city is the Butler County seat on the Great Miami River, about 20 miles north of Cincinnati, and has three historic districts: Dayton Lane, German Village and Rossville.

Historic districts

Houses in Hamilton's historic districts are mostly 19th- and early 20th-century brick and frame. Like old houses everywhere, they leak at the top and bottom: open attic floors, balloon-frame wall cavities, and bare rim joists and sill plates. We focus first on those, and treat walls carefully, especially solid brick, which generally should not be insulated from inside.

Post-war neighborhoods

The 1950s wave produced ranches and Cape Cods with thin attic insulation and leaky top plates. In those houses, attic sealing plus deeper blown-in insulation and rim joist foam give most of the benefit.

The 1913 flood

The March 1913 flood killed about 200 people in Hamilton and destroyed all four of its bridges within two hours. Houses on lower ground near the river can still have damp basements, and we check lower levels for moisture before insulating them.

Zone 5A

Hamilton is in Butler County, which Ohio's residential energy code places in Climate Zone 5A. The ceiling value is R-49 and the floor value over unheated space is R-30. The Department of Energy recommends R-60 for an empty existing attic in this zone.

German Village and Rossville houses

Many of the older houses near downtown are tall, narrow two- and two-and-a-half-story homes with steep roofs and small attics, sometimes with a finished room tucked under the roof. Their attic floors are small, but they are often wide open to the walls below. Sealing those openings matters more than the depth of insulation, and we focus there first.

Lower levels near the river

Where a basement stays damp, closed-cell foam on the rim joist and the top of the walls can help, but not on a wall that is actively leaking. We look for staining, efflorescence and damp sills before recommending anything.

We inspect the attic and the basement and send a written price. Get a free estimate