If the bituminous or asphaltic material constitutes the essential character of the article — as is typical for roofing felts and waterproofing membranes where the mineral or bituminous layer is primary — classification falls under 6807. A textile substrate that is merely coated or impregnated with bitumen as a secondary treatment may instead classify in the relevant textile chapter based on the textile's essential character.

Yes. The heading explicitly covers articles of asphalt or 'similar material,' with coal tar pitch cited as an example. Both petroleum bitumen and coal tar pitch-based fabricated articles fall within 6807, provided the article's essential character derives from the bituminous or asphaltic material.