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    chevtri's Avatar
    chevtri Posts: 6, Reputation: 1
    New Member

    Jun 17, 2009, 05:18 AM
    Adhesive for copper
    Hello friend... Just fabricated a chimney cap to install over two of my fireplace flues... The top roof was made of sheet metal, and I want to install copper over this metal... What would be a good adhesive that would withstand the heat, and not have a bad effect on the copper... Some high temp. RTV silicone caulkings have a bad reation with copper... thanks A lot... :)
    ballengerb1's Avatar
    ballengerb1 Posts: 27,379, Reputation: 2280
    Home Repair & Remodeling Expert

    Jun 17, 2009, 07:39 AM

    Installing copper on top of sheet metal is not a good idea for this application. The two metals have different coefficients of expansion and will warp when heated.

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