Basic
$0.79 – $3.55 per sq ft
R-30 fiberglass batts between floor joists pressed against the subfloor, wire supports at regular spacing
Insulate the underside of a floor over a crawl space or unheated area with batts, rigid board or spray foam between joists, supported in place.
Floor Insulation in Sioux Falls, South Dakota typically costs $0.93 to $4.18 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Sioux Falls are 8.0% lower than the national average for floor insulation.
National average: $1 – $4.50 per sq ft
$0.79 – $3.55 per sq ft
R-30 fiberglass batts between floor joists pressed against the subfloor, wire supports at regular spacing
$0.93 – $4.18 per sq ft
R-30 fiberglass batts pressed against the subfloor, held with wire supports, gaps at rim joists stuffed with insulation
$1.16 – $5.22 per sq ft
R-30 fiberglass batts pressed to the subfloor, wire supports at close spacing, rim joists insulated, batts cut tight around pipes and wiring
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.43 – $1.94 | sq ft |
| Labor | labor | $0.30 – $1.37 | sq ft |
| Supplies & Other | supplies | $0.12 – $0.52 | sq ft |
| Equipment & Disposal | equipment | $0.08 – $0.35 | sq ft |
Material costs in Sioux Falls run proportionally higher than labor, which may favor labor-intensive approaches.
Connect with local floor insulation contractors in Sioux Falls for personalized quotes based on your specific project.