Upcoming Price Increases: October 2026 – January 2027
6 manufacturer price-increase letters from 5 brands take effect in the next 90 days (Insulation), grouped by effective month. Every row links to the original letter.
All trades (48)Drywall (14)HVAC Equipment (11)Insulation (6)Plumbing Supply (4)Roofing Material (3)Door Hardware (2)Electrical Supply (2)Fencing (2)Decking & Railing (1)Flooring (1)Pool Supply (1)Siding (1)
October 2026 (3) all trades →
| Effective | Brand | Trade | Products | Increase | Source |
|---|---|---|---|---|---|
| Oct 22, 2026 next 30 days |
DuPont | Insulation | Styrofoam brand insulation (US) | Surcharge $720 | letter · ABC Supply Interiors |
| Oct 26, 2026 next 30 days |
DuPont | Insulation | Thermax and Tuff-R polyiso insulation | 6% | letter · ABC Supply Interiors |
| Oct 31, 2026 next 30 days |
PowerWool | Insulation | Insulation | 6% | letter · ABC Supply Interiors |
November 2026 (1) all trades →
| Effective | Brand | Trade | Products | Increase | Source |
|---|---|---|---|---|---|
| Nov 16, 2026 next 30 days |
Owens Corning Insulation | Insulation | FOAMULAR NGX extruded polystyrene foam board 5% price increase on FOAMULAR NGX extruded polystyrene foam board products, effective November 16, 2026. |
5% | letter · Negwer Materials |
January 2027 (2) all trades →
| Effective | Brand | Trade | Products | Increase | Source |
|---|---|---|---|---|---|
| Jan 1, 2027 | Rockwool | Insulation | Insulation | 6% | letter · ABC Supply Interiors |
| Jan 4, 2027 | Owens Corning | Insulation | Insulation | see letter | letter · ABC Supply Interiors |
Frequently asked questions
Which manufacturer price increases take effect in the next 90 days?
6 letters from 5 brands take effect between Oct 18, 2026 and Jan 16, 2027 in Insulation. The earliest: DuPont (Oct 22, 2026, $720 surcharge); DuPont (Oct 26, 2026, 6%); PowerWool (Oct 31, 2026, 6%).
How big are the upcoming increases?
Across the 4 letters in this window that state a percentage, the median is 6% and the middle half fall between 6% and 6% (ranges counted at their midpoint).
When do price increases usually take effect?
17% of the letters in this window take effect on the 1st of a month. Manufacturers typically announce January increases in October through December, so this list grows through the fall.
Can I add these dates to my calendar?
Yes. Subscribe to the all-letters calendar feed (or its webcal link) in Google Calendar, Outlook or Apple Calendar. Each letter appears as an all-day event on its effective date, and each trade page has its own feed.