R-Tech 1 in. x 4 ft x 8 ft Rigid Foam Board Insulation (R-3.85) price
Lowest captured price: $16.72 · ranges up to $17.96 across 5 retailers — a $1.24 spread on the same item · as of 2026-10-14
Price by retailer
| Retailer | Captured price |
|---|---|
| Menards Online | $16.72 |
| Lowe's - Warrington | $17.02 |
| The Home Depot - Plymouth Meeting | $17.55 |
| The Home Depot - Lansdale | $17.57 |
| Lowe's - North Wales | $17.96 |
Price history
Daily lowest captured price — tracking since 2026-07-01.
2026-10-01: $16.722026-10-02: $16.722026-10-03: $16.722026-10-04: $16.722026-10-05: $16.722026-10-06: $16.722026-10-07: $16.722026-10-08: $16.722026-10-09: $16.722026-10-10: $16.722026-10-11: $16.722026-10-12: $16.722026-10-13: $16.722026-10-14: $16.72
Compare live prices near you — free
These are captured prices and can lag the shelf. Signed in, Red Alert compares live prices across 40+ retailers plus the supply houses near your ZIP — inform-only, no checkout, links straight to the retailer.
Compare live pricesMore insulation prices
Prices shown were captured from retailer listings and may be out of date — always confirm with the retailer before buying. Red Alert sells nothing; some outbound links may earn us a commission at no cost to you, which never affects ranking.