Uncoated Compressed Cork Acoustic Insulation Boards
Dense boards manufactured from compressed cork granules for superior soundproofing in studios and theaters. They qualify for HTS 4504.10.20.00 as uncoated insulation made from agglomerated compressed cork. Their porous structure effectively dampens noise vibrations.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made from natural cork rather than agglomerated
Natural cork in blocks, plates, or sheets is classified under Chapter 45 natural cork provisions.
If combined with glass wool fibers
Glass fiber insulation products fall under Chapter 70, regardless of cork admixture.
If molded into paper pulp-cork composite sheets
Paper or paperboard molds with cork are classified under Chapter 48.
Not sure which classification is right?
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Import Tips & Compliance
• Submit acoustic performance certifications (e.g
• NRC ratings) to substantiate insulation use at customs
• Avoid packaging that suggests finished flooring; such could be reclassified under Chapter 45 flooring provisions
• Confirm no binding substance makes it resemble natural cork under Chapter 45 heading 4501
Related Products under HTS 4504.10.20.00
Compressed Cork Insulation Sheets
These are rigid sheets made from compressed agglomerated cork particles, often used for thermal and acoustic insulation in walls and roofs. They fall under HTS 4504.10.20.00 as they are specifically classified as insulation products from compressed cork, coated or not. The material's natural properties provide excellent sound absorption and heat resistance.
Coated Compressed Cork Wall Insulation Panels
Pre-cut panels of compressed cork with a protective coating, ideal for interior wall insulation in residential and commercial buildings. Classified under HTS 4504.10.20.00 due to their compressed cork composition and primary function as thermal insulation. The coating enhances moisture resistance without altering the base classification.
Compressed Cork Roof Insulation Strips
Narrow strips of compressed agglomerated cork designed for under-roof thermal insulation in construction. Falls under HTS 4504.10.20.00 as strip-form insulation from compressed cork, suitable for both coated and uncoated variants. Provides natural fire resistance and sustainability.
Fire-Resistant Coated Cork Insulation Disks
Solid cylindrical disks of compressed cork with intumescent coating for pipe insulation and fire barriers. Classified in HTS 4504.10.20.00 as insulation disks explicitly covered under compressed cork provisions. The coating activates in high heat for added safety.
Compressed Cork Thermal Break Panels
Panels from compressed cork used as thermal breaks in steel structures to prevent heat bridging. HTS 4504.10.20.00 applies as coated or uncoated insulation plates of agglomerated compressed cork. Essential for energy-efficient building envelopes.
Eco-Friendly Compressed Cork Floor Underlayment
Thin sheets of compressed cork serving as sound and thermal underlayment beneath flooring. Falls under HTS 4504.10.20.00 for its insulation properties from agglomerated compressed cork, whether coated or not. Popular for green building certifications.