Glazier how-to

How to Run a Weatherproof Sealant Joint

Good seals keep water out.

Updated By the Career Education Institute Curriculum Team
Quick answer

Good seals keep water out. In short: clean; install; tape, then complete the remaining steps below.

Step by step

  1. Clean surfaces.

  2. Install backer rod.

  3. Tape edges.

  4. Apply sealant.

  5. Tool the joint.

  6. Remove tape.

Safety reminders for glaziers

  • Wear cut-resistant gloves
  • Use fall protection
  • Lift glass with help
  • Use suction cups

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