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U.S. exports of tar-, bitumen-, or asphalt-coated or impregnated paper and paperboard (HS 481110) totaled $366K in July 2026.
Importers of Tar-, Bitumen-, or Asphalt-Coated or Impregnated Paper and Paperboard paid $11K in duties in July 2026 — an effective duty rate of 11% on $100K in dutiable value, based on actual customs collections rather than the published tariff schedule. Tar-, Bitumen-, or Asphalt-Coated or Impregnated Paper and Paperboard imports of $256K in July 2026 ran 16% above the year-to-date monthly average of $220K.
Last updated: July 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.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
17 shipments/mo
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.
HSChapter 48
Subheading 7 of 7 in heading 4811
Subheading 481110 · $256K of $172.3M
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 4811101100 | Ppr/Pbrd Ctd/Impreg W/Tar Bitumen/Asphalt Etc | $153K | 5.77% | 57.70% | $9K |
| 4811102100 | Ppr/Pbr Coatd/Impreg Wth Tar Bitumen/Asphalt NESOI | $92K | 8.18% | 81.77% | $8K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4811102100 | Ppr/Pbr Coatd/Impreg Wth Tar Bitumen/Asphalt NESOI | $288K |
| 4811101100 | Ppr/Pbrd Ctd/Impreg W/Tar Bitumen/Asphalt Etc | $230K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$256KYoY · Pro
Exports
$366KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Mexico and Canada together take 58% of it.
customs district
origin
entry
rate provision · imports
60.9% enters free of duty; the effective duty rate is 4.46%.