Bitumen-Treated Lignocellulose Damp-Proof Course Boards
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made from plastic rather than fiberboard
Polymer-based damp-proof sheets are plastics under Chapter 39.
If surface-covered with paint or laminate
Additional surface coverings beyond bitumen move to specific surface-covered subheading.
If predominantly particleboard composition
If made from wood particles rather than fibers, it classifies under particleboard heading 4410.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 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
Related Products under HTS 4411.94.00.50
Bitumen-Impregnated Low-Density Fiberboard Sheathing Panels
These are low-density fiberboard panels (density ≤0.5 g/cm³) made from wood fibers, impregnated with bitumen for water resistance, used primarily as exterior sheathing in construction. They fall under HTS 4411.94.0050 because they are not mechanically worked or surface-covered beyond the bitumen impregnation, meeting the specific criteria for this subheading. The bitumen treatment provides essential protection against moisture without altering the base material's classification.
Bitumen-Coated Wood Fiberboard Roofing Underlayment
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.
Impregnated Softboard Insulation Panels
Soft, low-density fiberboard (≤0.5 g/cm³) panels impregnated with bitumen for enhanced thermal insulation and damp-proofing in walls and floors. HTS 4411.94.0050 applies as it's other fiberboard, bitumen-impregnated, without mechanical processing or additional surface layers. Commonly used in energy-efficient building projects.
Water-Resistant Bitumen Fiberboard Partition Panels
Unworked low-density wood fiberboard panels impregnated with bitumen for interior partitions in humid environments like bathrooms. Under HTS 4411.94.0050 for its density ≤0.5 g/cm³, bitumen treatment without mechanical or surface work. Provides lightweight, moisture-resistant dividing walls.
Bitumen-Impregnated Bamboo Fiberboard Sheets
Low-density fiberboard from bamboo (woody material per Chapter 44 note), impregnated with bitumen for outdoor shed lining. HTS 4411.94.0050 covers it as ligneous material fiberboard, ≤0.5 g/cm³, untreated beyond impregnation. Eco-friendly alternative for temporary structures.
Soft Bitumen Fiberboard Soundproofing Backing
Low-density fiberboard impregnated with bitumen to dampen sound vibrations, used as backing for studio walls and machinery enclosures. Matches HTS 4411.94.0050: other fiberboard ≤0.5 g/cm³, bitumen only, no working. Enhances acoustic isolation in buildings.