Insulation Price Increases May 2026
8 manufacturer price-increase letters from 5 brands taking effect in May 2026. Every row links to the original letter or posting.
By month: January 2027 · November 2026 · October 2026 · September 2026 · August 2026 · July 2026 · June 2026 · May 2026 · April 2026 · March 2026 · January 2026 · October 2025 · September 2025 · July 2025 · May 2025 · April 2025 · February 2025 · January 2025
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| May 28, 2026 | DuPont | Insulation | 4% | letter · ABC Supply Interiors |
| May 25, 2026 | Kingspan | Insulation | 4%-8% | letter · ABC Supply Interiors letter · Performance Pro Supply |
| May 22, 2026 | Johns Manville | Insulation | 5%-10% | letter · ABC Supply Interiors |
| May 15, 2026 | Johns Manville | Johns Manville Corbond® Spray Foam | 15% | letter · Performance Pro Supply |
| May 15, 2026 | NCFI | NCFI Spray Foam Systems | 12% | letter · Performance Pro Supply |
| May 11, 2026 | Kingspan | Insulation | see letter | letter · ABC Supply Interiors |
| May 1, 2026 | Johns Manville | Insulation | 6% | letter · ABC Supply Interiors letter · Performance Pro Supply |
| May 1, 2026 | Sika | Insulation | 6% | letter · ABC Supply Interiors |