How waterproof is epoxy/silica and epoxy/bubbles?

Discussion in 'Boatbuilding' started by mariobrothers88, Sep 5, 2021.

  1. mariobrothers88
    Joined: Sep 2020
    Posts: 215
    Likes: 10, Points: 18
    Location: San Diego, CA

    mariobrothers88 Senior Member

    Hi guys, how waterproof is epoxy/silica and epoxy/glass bubbles? Can you count on them to be completely waterproof or are they a bit porous and you should expect that some moisture can pass through?

    Thanks for all your help guys i really appreciate it!
  2. Blueknarr
    Joined: Aug 2017
    Posts: 1,455
    Likes: 414, Points: 83
    Location: Colorado

    Blueknarr Senior Member

    If the powders are well dispersed them it should be waterproof.

    Undisolved clumps of powder are not waterproof.

    A very thin layer may not be as waterproof as neat epoxy
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