Date: April 15, 2026 

Dear Canadian Building Insulation Customer: 

Johns Manville is announcing a price increase effective June 15, 2026. The price increase applies to the following products: 

• MinWool® Sound Attenuation Fire Batts (SAFB) 8% 
• MinWool® Sound & Fire Block 8% 
• TempControl® 8% 
• MinWool® Curtainwall 8% 
• MinWool® Safing 8% 
• CladStone™ Water & Fire Block 8% 
• MinWool®Window Wall 8% 

This price increase will apply to all orders shipped on and after June 15, 2026, regardless of the date of order placement. Please check with your Customer Service Specialist as this date approaches for information on current product lead times.