Bitumen Impregnated Medium Density Fiberboard Roof Underlayment
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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If density exceeds 0.5 g/cm³
Higher density fiberboards shift to subheading 4411.92, even if bitumen impregnated, based on density thresholds.
If density not exceeding 0.35 g/cm³
Lower density fiberboards fall under 4411.94.00.10, separating low-density from medium-density bitumen-impregnated products.
If primarily composed of bitumen with minimal fiberboard
Products dominated by bitumen binders may classify as bitumen panels under Chapter 68 rather than wood fiberboards.
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Import Tips & Compliance
• 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
Related Products under HTS 4411.94.00.30
Bitumen Impregnated Fiberboard Soundproofing Panels
Medium density fiberboard panels (0.35-0.5 g/cm³) impregnated with bitumen for improved acoustic insulation and moisture resistance in wall applications. Classified under HTS 4411.94.00.30 for its density and bitumen treatment, which enhances sound absorption properties. Ideal for interior construction and studio dividers.
Bitumen Sealed MDF Construction Sheathing Board
Density-controlled fiberboard (0.35-0.5 g/cm³) fully impregnated with bitumen for use as exterior sheathing in framing, providing weatherproofing. Meets HTS 4411.94.00.30 criteria for medium density and bitumen impregnation. Used in residential and commercial building envelopes.
Bitumen Impregnated Low-Weight Partition Board
Light medium-density fiberboard (exceeding 0.35 but ≤0.5 g/cm³) impregnated with bitumen for interior partitions, offering fire resistance and humidity protection. Precisely fits HTS 4411.94.00.30 due to density specs and bitumen content. Common in office and healthcare facility dividers.
Waterproof Bitumen Fiberboard Subfloor Panels
Medium density (0.35-0.5 g/cm³) fiberboard panels impregnated with bitumen to prevent moisture damage in subflooring applications. Classified under HTS 4411.94.00.30 for its specific impregnation and density profile. Essential for wet-area flooring in bathrooms and kitchens.
Bitumen Treated MDF Exterior Cladding Panels
Fiberboard cladding with density 0.35-0.5 g/cm³, bitumen impregnated for outdoor weather resistance in siding applications. HTS 4411.94.00.30 applies due to precise density and treatment specs. Used for aesthetic and protective building facades.
Industrial Bitumen Impregnated Backer Board
Medium density fiberboard (0.35-0.5 g/cm³) with bitumen impregnation used as backer for tile in high-moisture industrial settings. Fits HTS 4411.94.00.30 for density and bitumen specs. Provides structural support and waterproofing.