Rim Joist & Band Joist Foam in Bexley, OH

In Bexley, Rim Joist & Band Joist Foam is the single highest-ROI insulation upgrade for any home built before 1995, where the rim joist is almost always uninsulated and acts as the stack-effect chimney that drives winter heat loss. The install is 2-3 inches of closed-cell foam at the rim and band joist where the foundation meets the framing, applied to the rim joist, which sits at the worst air-infiltration band in most homes.

Bexley was built out mostly between 1908 and 1940 with large Tudor Revival, Colonial Revival, and American Foursquare houses along Main Street and Broad Street, on lath and plaster walls with full basements and steep original rafter attics. Wall cavities behind that original plaster are frequently empty, and the closed attic construction on many of the largest homes limits blown-in access from above. A drill-and-fill retrofit through the exterior siding is the common approach that avoids disturbing the original plaster. Bexley's eastern edge runs along Alum Creek on the flat glacial till plain typical of Franklin County, without the ravine lots found along the Olentangy corridor to the north. That housing profile shapes our typical scope for rim joist & band joist foam in Bexley. We spray full closed-cell coverage at the rim and band joist, the highest-ROI single project on virtually every pre-1995 home in the metro.

Rim-joist foam is the highest-ROI project across Franklin County's older housing, from Bexley and Clintonville's pre-war streetcar-suburb stock through Whitehall's postwar ranches, because almost none of it was built with rim-joist insulation. Two to three inches of closed-cell foam meets the Climate Zone 5A R-13 minimum and seals the band-joist leak, one that costs more over Columbus's longer heating season than it does farther south.

IECC R402.1.1 requires R-13 minimum at the rim joist for Climate Zone 5A. Two inches of closed-cell foam delivers R-13+ and seals the band joist air leakage path in one pass. Permitting in Bexley routes through the local OH building department, and Climate Zone 5A R-value targets apply across the entire Columbus metro.