Bitumen Impregnated Low-Density Fiberboard Roofing Underlayment from Canada
Low-density fiberboard (density ≤0.5 g/cm³) impregnated with bitumen to provide waterproofing and protection against moisture. Used primarily as roofing underlayment beneath shingles or tiles. Classified under HTS 4411.94.00.70 due to its fiberboard composition, low density, and bitumen impregnation for weather resistance.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Verify density certification (≤0.5 g/cm³) and bitumen impregnation content through lab testing to confirm HTS 4411.94.00.70 classification
• Include supplier declarations on wood origin to comply with Lacey Act requirements for fiberboard products
• Avoid misclassification as laminated products by ensuring no additional resin bonding layers beyond standard fiberboard production