Plain Paper Lined Gypsum Sheathing from Mexico
Exterior-grade gypsum sheathing boards with paper liner for wall bracing before siding. These are paper-reinforced plaster sheets, not for direct exposure, and fall under tariff item 6809.11.00.
Duty Rate — Mexico → Canada
6%
Import Tips
• Confirm the product is not treated with water repellents or other coatings that could affect classification
• Provide installation instructions to show it is for sheathing, not direct exposure
• Keep records of the paper lining material for CBSA verification