Bitumen-Treated Lignocellulose Damp-Proof Course Boards from Canada
Low-density boards from ligneous materials impregnated with bitumen, used as damp-proof courses (DPC) in foundation walls to block rising moisture. Fits HTS 4411.94.0050: fiberboard of ligneous materials, density ≤0.5 g/cm³, bitumen-impregnated, not mechanically worked. Essential for masonry construction.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify ligneous material origin per Chapter 44 note including bamboo/woody materials; document bitumen as sole treatment
• Pitfall: confusion with plastic DPCs leading to Chapter 39 classification