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Thread: treated posts

  1. #1
    Join Date
    Dec 2010
    Location
    Illinois
    Posts
    64

    Default treated posts

    What is the rule on treated lumber being covered with metal? I can't seem to find a clear answer. Thanks.

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  2. #2
    Join Date
    Dec 2008
    Location
    Maryland
    Posts
    2,777

    Default Re: treated posts

    Short answer is that the treated lumber, if CU, has to have a barrier between the wood and the metal to prevent a reaction between dissimilar metals.

    Unless the metal is stainless steel and then I have reservations about the quality of the SS.

    Many companies have started using coating to the metal and I do not trust them for the long term applications.

    If you read deep into the attachment manufacture's test studies and warranties you find that there will be a statement that the wood should not be subjected to water.


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