Planning ranges—not a promised quote
Recent Louisiana pricing guides commonly place open-cell installations around $1.50 to $3.00 per square foot and closed-cell around $1.75 to $4.50 per square foot at the specified project thickness. Because providers may price by board foot, surface square foot or complete scope, verify exactly what the number measures.
Small projects may carry minimum mobilization charges. Difficult access, steep rooflines, occupied-space protection and required coatings can move a project above broad ranges.
Typical project budgets
For early planning, many attic projects fall roughly between $3,000 and $9,000, while moisture-managed crawl-space projects often fall around $3,000 to $8,000. Large rooflines, whole homes, commercial buildings and extensive removal can exceed those ranges.
These are editorial planning ranges, not offers or provider commitments. Hammond-area quotes must be based on the actual dimensions, thickness and work conditions.
What drives the final cost
Foam thickness and volume are major drivers, but they are not the only ones.
- Open-cell versus closed-cell product
- Required R-value and installed thickness
- Measured surface area rather than floor area
- Old-insulation removal and disposal
- Leak, substrate or moisture preparation
- Masking, lifts and difficult access
- Ignition or thermal barriers
- Minimum job and travel charges
Compare the full scope
Ask each participating provider to state the product, thickness, area, preparation, barriers, cleanup, exclusions, warranty and total. A low total may simply leave essential work outside the proposal.