Bitumen-Coated Wood Fiberboard Roofing Underlayment from Japan
Low-density fiberboard sheets impregnated with bitumen, designed as underlayment beneath roofing materials to prevent moisture penetration. Classified under HTS 4411.94.0050 due to its wood fiber composition, density not exceeding 0.5 g/cm³, and lack of mechanical working or surface coverings other than bitumen. This makes it ideal for residential and commercial roofing applications.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide lab test reports confirming bitumen impregnation levels and fiberboard density; check for VOC emissions compliance under EPA rules
• Avoid shipping with mechanically edged panels to prevent mixed classification
• Pitfall: insufficient proof of 'not surface-covered' status