Vermiculite Ceramic Insulating Brick
Solid building brick incorporating expanded vermiculite aggregate in a fired clay matrix for superior thermal resistance, used in energy-efficient wall construction. Classified under HTS 6904.10.0010 as heat insulating solid bricks meeting fired ceramic criteria with low thermal conductivity (<0.2 W/mK). Exceeds tile thickness per US notes.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for industrial furnace/oven lining applications
Other refractory bricks of siliceous materials classify in 6903, differentiated by end-use temperature resistance rather than building construction.
If cement-bonded vermiculite without ceramic firing
Articles of cement/composition materials (6810) exclude fired ceramics; binding method changes chapter classification.
If hollow or cellular construction rather than solid
Hollow ceramic building bricks fall under 6905.10, while solid insulating bricks remain in 6904.10.
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Import Tips & Compliance
• 1
• Submit material composition analysis showing clay base with vermiculite filler to confirm ceramic nature. 2
• Include manufacturer specs confirming firing process and heat insulation rating. 3
• Beware of misdeclaration as lightweight concrete blocks (Chapter 68) without proper ceramic firing proof
Related Products under HTS 6904.10.00.10
Heat Insulating Ceramic Solid Building Brick
A solid ceramic building brick fired after shaping from inorganic nonmetallic materials like clays and lightweight aggregates, designed specifically for heat insulation in construction. It falls under HTS 6904.10.0010 as a solid building brick with thermal insulating properties, meeting Chapter 69 requirements for fired ceramic products not classifiable in headings 6901-6903. Thickness exceeds US note limits for tiles, confirming building brick classification.
Perlite Aggregate Insulating Ceramic Brick
Fired solid brick containing expanded perlite for lightweight heat insulation, ideal for passive house construction and cavity walls. HTS 6904.10.0010 applies to these solid building bricks with ceramic fired body and thermal insulating properties per Chapter 69 definitions.
Foamglass Ceramic Insulating Brick
Solid brick made from cellular glass (foamglass) fired into durable heat insulating ceramic form for foundation walls and roof insulation. Falls under HTS 6904.10.0010 as solid building bricks meeting fired ceramic requirements with exceptional low thermal conductivity.
Diatomaceous Earth Ceramic Insulating Brick
Solid fired brick incorporating diatomaceous earth for high-temperature insulation in building envelopes. HTS 6904.10.0010 classification for heat insulating solid ceramic building bricks per fired ceramic definitions.