Open-Cell Spray Foam in Delaware
Open-cell foam is the right choice for interior walls (sound dampening) and unconditioned attic floors where vapor permeability matters. Less expensive per board foot than closed-cell. Ideal for second-floor walls, attic floors, and above-roof-deck applications in conditioned attic designs. Delaware sits within our service area for Greater Columbus and Central Ohio, with same-week scheduling typical for routine jobs.
Typical pricing in Delaware
$0.50-$1.20 per board foot
Pricing varies by job specifics. Free phone or on-site quotes; fixed pricing once the technician has assessed the job.
Open-Cell Spray Foam for Delaware's a genuine pre-1950 college-town downtown surrounded by newer exurban subdivisions housing
In Delaware, Open-Cell Spray Foam is the right product for vented attic-floor retrofits, interior partition wall sound assemblies, and any application where vapor permeability is a design requirement rather than a defect. The install is low-density (0.5 lb) water-blown open-cell foam at R-3.7 per inch, vapor-permeable and sound-dampening, applied to interior partition walls (for sound dampening) and unconditioned attic floors (where vapor permeability matters).
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 open-cell spray foam in Delaware. We spec open-cell at the right surfaces only, such as interior partition walls for sound assemblies, attic floors over vented attics, and other vapor-permissive applications.
Delaware County open-cell work concentrates on vented attic floors across Powell and Lewis Center's post-1995 subdivision stock, where the vapor-permeable product is the standard Climate Zone 5A retrofit spec for a vented attic above code-era construction.
Open-cell foam does not function as a vapor retarder; in Climate Zone 5A, it should never be sprayed directly to roof decks unless paired with a separate vapor-control strategy designed by the project envelope engineer. Permitting in Delaware routes through the local OH building department, and Climate Zone 5A R-value targets apply across the entire Columbus metro.
- County
- Delaware, OH
- Predominant era
- Mixed-era residential
- Climate zone
- IECC 5A (cold mixed-humid)
- Service category
- Open-cell (R-3.7/inch, vapor-permeable)