Hypalon Rubber Roof Coating Mastic from Canada
Chlorosulfonated polyethylene (Hypalon) rubber mastic for coating flat roofs and seams. Under HTS 3214.90.10.00 as nonrefractory surfacing preparation based on rubber for ceilings/roofs. Provides waterproof membrane protection.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Differentiate from roof paints (3208-3210) by emphasizing mastic thickness/application
• Fire rating documentation aids classification for roof use
• Pesticide registration if marketed as anti-mold coating