Date: April 6, 2026

Dear valued Owens Corning® Insulation customer,

Owens Corning Canada LP (“Owens Corning”) will increase its prices on the following Thermafiber® Mineral Wool Building Insulation products in Canada with all orders shipped on or after July 01, 2026, regardless of order entry date.

• Sound Attenuation Fire Blankets (SAFB™) 8% 
• FireSpan® 40, 90, 120 8%
• RainBarrier®, RainBarrier® Dark™ 8%
• RainBarrier® HC, HC Plus, HC Max 8%
• Safing 8%
• VersaBoard® 35, 40, 60, 80 8% 
• Fire & Sound Guard® Plus Wood Stud & Steel Stud 8%
• TopStop® 8%
• Thermafiber® CI-C SC18, EIFS Board 8%
• Thermafiber® Foil Tapes & Knives 8%
• Impasse® Hardware & Spiral Anchors 8%
• RainBarrier® Clips 8%

Owens Corning reserves the right to limit quantities prior to the increase.