RE: Floor leveling cement and copper pipes

firefighterjake Posted By firefighterjake, Nov 19, 2010 at 4:20 PM

  1. firefighterjake

    Minister of Fire

    Jul 22, 2008
    Unity/Bangor, Maine
    I poured some floor leveling cement the other day . . . and now realize that I may have made a mistake. Will the cement "eat" away the copper pipe coming up to the radiators?
  2. semipro

    Minister of Fire

    Jan 12, 2009
    SW Virginia
    Jake, if its the leveler you used is portland cement based you may have a problem. I've read that portland cement concrete is alkaline and corrosive to copper. I was adding an outside water faucet to my house and it needed to penetrate a stone wall so I had to put it in a plastic sleeve.

    But, thinking out loud here, for corrosion to occur on metal you need an electrolyte (usually water) present. If the interface between the pipe and floor will always be dry you might have nothing to worry about. If it was a cold water pipe I'd be worried but since its hot water for the radiators....

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