4411.94.00.30/Bitumen Impregnated Medium Density Fiberboard Roof Underlayment/Japan

Bitumen Impregnated Medium Density Fiberboard Roof Underlayment from Japan

This medium density fiberboard (MDF), with density between 0.35-0.5 g/cm³, is impregnated with bitumen to enhance water resistance and durability for use as roof underlayment. It falls under HTS 4411.94.00.30 due to its specific density range and bitumen impregnation, distinguishing it from higher density or untreated fiberboards. Commonly used in construction for protecting roofs from moisture penetration.

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

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Import Tips

• Verify density certification (0.35-0.5 g/cm³) and bitumen impregnation content via lab testing to confirm HTS 4411.94.00.30 classification

• Include manufacturer's specs and impregnation process documentation to avoid misclassification as plain fiberboard

• Check for formaldehyde emission compliance under TSCA Title VI for composite wood products