Attic-only jobs: 1 day. Whole-home retrofits: 2-3 days. New-construction wall foam: 1 day for a typical home. Schedule installs around weather, since foam needs ambient temps above 40°F to cure properly.
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Install time depends on access, geometry, and material volume. (1) Attic-only single-family Columbus: 6-9 hours including spray time, walk-through, and cleanup. The truck-mounted spray rig sets up in 30-45 minutes; spray time is 3-5 hours; lift cure between passes adds 30-60 minutes; cleanup and walk-through closes the day. (2) Rim joist only: 4-6 hours. (3) Walls during new construction: 4-8 hours. (4) Wall-cavity drill-and-fill on a retrofit: 1-2 days depending on home size and patch work. (5) Whole-home retrofits: 2-3 days, with wall work day 1-2 and attic work day 2-3 typically. Weather constraint: ambient temperature inside the work zone must be above 40°F for proper cure; in Columbus this means most of the year is workable, though the Zone 5A winter means mid-winter installs more reliably require portable heaters in the work area than they would farther south. Crew coordination is the biggest schedule variable; plan 2-4 weeks ahead during peak season (March-October). Columbus seasonal scheduling: foam installs run year-round in Columbus but mid-winter projects need portable heaters in the work area to maintain the 40°F substrate temperature minimum for proper cure. Local install teams plan around weather and rarely have to delay; the typical Columbus installer's scheduling lead time runs 2-4 weeks during peak season (March-October) and 1-2 weeks during off-season.