Insulation Materials Prices
Current prices for fiberglass, cellulose, spray foam, and rigid board insulation.
Material prices fluctuate with lumber and commodity markets.
Prices shown are national averages as of 2026-05-25. Check local suppliers for current rates.
Price Breakdown
5 items tracked — updated 2026-05-25
| Item | Low | High | Unit |
|---|---|---|---|
| Fiberglass Batt (R-30, 15"x93") | $1.00 | $1.80 | sq ft |
| Blown-In Cellulose (per bag) | $8.00 | $15.00 | bag |
| Spray Foam Kit (200 board ft) | $300 | $500 | kit |
| Rigid Foam Board (2" XPS 4x8) | $30.00 | $50.00 | sheet |
| Mineral Wool Batt (R-15) | $0.80 | $1.50 | sq ft |
What Affects Insulation Materials Cost?
- ✓ R-value and thickness
- ✓ Material type (fiberglass, foam, mineral wool)
- ✓ Application (attic, wall, crawlspace)
- ✓ Fire rating requirements
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Frequently Asked Questions
How much do insulation materials prices cost? ▼
Insulation Materials Prices vary widely. For example, Fiberglass Batt (R-30, 15"x93") ranges from $1.00 to $1.80 per square foot. See the full price table above for all items tracked.
What factors affect insulation materials prices the most? ▼
Key cost factors include: R-value and thickness, Material type (fiberglass, foam, mineral wool), Application (attic, wall, crawlspace), Fire rating requirements. Regional availability and seasonal demand also affect pricing.
Where can I buy insulation materials? ▼
Insulation Materials are available at Home Depot, Lowe's, local building supply yards, and online retailers like Amazon. Buying in bulk or during seasonal sales can yield significant savings.