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HSChapter 48
U.S. imports of tar-, bitumen-, or asphalt-coated or impregnated paper and paperboard (HS 481110) totaled $337K in April 2026, traded with 8 countries.
Last updated: April 2026 dataRoofing underlayment, waterproofing membranes, and construction-grade moisture barriers are the primary commercial applications for paper and paperboard saturated or coated with tar, bitumen, or asphalt. The US schedule divides the heading between two 10-digit lines — 4811101100 and 4811102100 — reflecting different product configurations within this construction-materials niche. Canada is the dominant supplier, consistent with its role as a major exporter of building-products inputs to the US market, with China and Germany also contributing volume. Classification hinges on confirming that the impregnating or coating substance is tar, bitumen, or asphalt rather than wax, plastic, or another compound, which would redirect the goods to a different subheading.
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The distinction turns on the chemical identity of the coating or impregnating agent. Laboratory analysis or a supplier's material safety data sheet confirming a bituminous or asphaltic compound supports classification here. Wax- or paraffin-treated paper falls under heading 481160, and plastic-coated paper falls under heading 481151 or 481159, so accurate material documentation is critical.
While HTS classification itself does not impose end-use restrictions, roofing underlayment products may be subject to building-code compliance standards (such as ASTM specifications) that affect marketability in the US. Importers should verify that the product meets applicable ASTM or ICC standards required by downstream contractors or distributors, separate from customs entry requirements.
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Monthly import values over time