TechnicianVision · Knowledge base
Back-To-Basics: Seam Sealer
I-CAR · July 25, 2018
Summary
This article highlights the critical importance of proper substrate preparation and product selection when applying seam sealers to prevent corrosion, adhesive failure, and paint failure. It emphasizes that while most one-part sealers can go over bare metal, most two-part sealers require a corrosion-resistant primer, and technicians must verify refinish compatibility and cure times.
What to do on the job
Always consult the seam sealer manufacturer's product data sheet to verify substrate preparation requirements, primer compatibility, and minimum cure times before applying refinish materials.
How to use it
Use this document to justify the necessary labor time and materials for applying corrosion-resistant primers prior to two-part seam sealer application, as well as the required cure times before refinishing can begin.
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