Wall Cavity Spray Foam in Delaware, OH

In Delaware, Wall Cavity Spray Foam is most impactful in pre-1950 homes with empty plaster wall cavities or settled fiberglass, and in 1950s-1970s drywall homes with original R-11 batts that have lost their air-seal. The install is drill-and-fill closed-cell foam through 1.5-inch access holes in each stud cavity, applied to the wall plane, the second-largest thermal surface after the attic.

Delaware's pre-1950 stock near Ohio Wesleyan includes balloon-frame houses with genuinely empty wall cavities, where drill-and-fill closed-cell foam preserves the original exterior siding and trim rather than requiring a tear-off. The newer subdivisions ringing downtown are builder-grade fiberglass batt construction with OSB sheathing, consistent with whatever decade's energy code applied when they went in. Rim joists across both eras are a near-universal gap, since neither the older frame construction nor the earlier subdivision code required insulating them. Delaware sits directly on the Olentangy River, with Delaware Dam and Delaware Lake just north of downtown holding back the river's upper watershed. That housing profile shapes our typical scope for wall cavity spray foam in Delaware. We size drill-and-fill scope to the era and cavity condition identified at the in-home assessment.

Delaware County wall-cavity work concentrates in downtown Delaware's genuine pre-1950 core, where empty or settled cavities are common, while Powell and Lewis Center's post-1995 subdivision construction along the Olentangy and US-23 corridors typically already meets the Climate Zone 5A wall target without drill-and-fill.

Pre-1995 wall assemblies typically have no air barrier; drill-and-fill closed-cell adds both R-19 to R-21 in a 2x4 cavity and the integrated air seal that fiberglass cannot provide. Permitting in Delaware routes through the local OH building department, and Climate Zone 5A R-value targets apply across the entire Columbus metro.