Bitumen-Free Roofing Mastic from Japan
Synthetic rubber mastic for roof flashing seals, waterproof. Explicitly HTS 3214.10.00.20 other mastics, non-bituminous. Surfacing for ceilings/roofs.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Confirm non-bituminous via assay to uphold chapter note
• Fire rating docs for roof applications
• Tube vs pail affects retail classification