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  1. #1
    Join Date
    Aug 2005
    Location
    Perth WA
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    Default Is Water Based Polyurethane water proof when dry?

    I just completed a fish tank cabinet and finished it in WBPU/stain, but now I m having second thoughts and wonder if it was a silly thing to do!

    I hope one of you with experience in this area will post.

    I only have internet access for the next 6 hrs, then I am in in black out conditions till next Friday. I will respond to post at that time.

    Thanks in advance!

    Alfred

  2. #2
    Join Date
    Nov 2003
    Location
    Australia and France
    Posts
    2,869

    Default

    Sorry to answer in a blackout!

    Yes. WBPU is waterproof/ not water soluble when cured.

    P

  3. #3
    Join Date
    Aug 2005
    Location
    Perth WA
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    Default

    Thanks for that, makes me feel more comfortable now.

  4. #4
    Join Date
    Jul 2005
    Location
    australia
    Age
    64
    Posts
    21

    Default

    Depends what you mean waterproof, PU will still let water vapour through (you need an epoxy vapour barrier to stop this), also ensure the PU you are using has met the potable water standard, otherwise you could be ending up with a heap of dead fish. Some products have biocides in the prevent mould growth (either in the can or when applied) and these can leach into the waterover time

  5. #5
    Join Date
    Aug 2005
    Location
    Perth WA
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    Default

    hmmm........... I only put it on the outside of the hood, but this is something that I have not considered before. Thanks.

  6. #6
    Join Date
    Nov 2003
    Location
    Australia and France
    Posts
    2,869

    Default

    Ummm... I'm hoping you're using it on the cabinet, not on the tank??

    P
    :confused:

  7. #7
    Join Date
    Aug 2005
    Location
    Perth WA
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    Default

    Yes, on the cabinet and hood only! LOL

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