Is green *patina* normal on copper pipes

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by chefwong, Sep 13, 2006.

  1. chefwong

    chefwong Member

    Jun 14, 2006
    District of Columbia
    I was opening the access holes in my *finished basement* to vacumn up all the debris that fell while remodeling upstairsand noticed a slight tint of green around alot of the water fittings. Not the body of the copper - just around the fittings itself *elbows, etc*. Granted, this space does get cold and warm - wall cavity.

    The copper in my boiler room does not show this discoloration.

    Is this normal ?
  2. prashster

    prashster New Member

    Dec 7, 2005
    That patina is a product of oxidation.
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  4. Mikey

    Mikey Aspiring Old Fart, EE, computer & networking geek

    Nov 8, 2005
    Hansville, Washington
    Also a product of not cleaning the pipes thoroughly after sweating the joints, which were probably fluxed with an acid flux.
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