Waterproofing is a “system,” not just adding more glue. We follow a strict 4 steps to 100% waterproof the cut ends of neon signs:

  1. Preparation: Use dedicated silicone square end caps and neutral silicone sealant.
  2. Cleaning: Clean the cut surface with alcohol to ensure perfect adhesion.
  3. Sealing: Fill 1/3 of the cap with sealant, ensuring it “overflows” slightly upon insertion to create a 360° seal.
  4. Curing: Allow full curing before water immersion testing.
For a step-by-step guide with images, please check out our detailed article.

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