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Sanding guidelines for applying one System Three product over another

  • Recoating or applying one product on top of another for most of our 2:1 epoxies (General Purpose, SilverTip, Clear Coat, MirrorCoat, RotFix, etc.) can be done without sanding if done within 72 hours of the previous coat or product. Beyond that, sand the previous coat or product with 80-120 grit sand paper to ensure the next layer adheres to the previous one. 
  • For S-1 Sealer and Cold Cure products, sanding must be done after 24 hours. 
  • For all System Three adhesives (Quick Cure, T-88, Gel Magic, MetlWeld, etc.) putties or fairing compounds like QuikFair, please allow to fully cure then abrade or sand if additional product is to be applied.
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