Maintenance Guides / Garage & Systems

Replace garage door bottom seal

Difficulty: moderateTime: 45 minsEst. Cost: $30 - $100

Why it matters

Cracked astragal lets in rain, rodents, leaves, and drafts, compromising garage climate control.

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How to do it

  • 1

    Open garage door fully.

  • 2

    Inspect bottom rubber seal (astragal) for cracks, hardening, or gaps.

  • 3

    Measure width of door to ensure correct seal size.

  • 4

    Remove fasteners holding old seal to door bottom.

  • 5

    Slide old seal out of track.

  • 6

    Clean track of dirt, debris, and old seal material.

  • 7

    Slide new seal into bottom track, ensuring even seating.

  • 8

    Secure seal with provided fasteners; close door and verify floor contact.