Polyurethane Construction Caulk from Canada
Polyurethane construction caulk is a high-performance mastic for exterior building joints. It remains elastic under movement, classified under HTS 3214.10.00 as caulking compound.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Submit isocyanate content declaration for OSHA and EPA compliance
• Include joint movement capability ratings in technical specs
• Certify for ASTM C920 standards if claiming construction grade