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  1. #1
    Join Date
    Dec 2007
    Posts
    32

    Default Question about cutting backerboard

    I bought a sheet of cement "Hardibacker" board. The expert in the home improvement store told me that the way to cut it was to score the board with a utility knife until the board breaks. That worked, but after numerous passes with the utility knife and not getting a straight cut, it left me wondering if there is a better way.

    Can this material be cut with a table saw or perhaps a circular saw with a rip fence placed along the line where I want to cut?

  2. #2
    Join Date
    Nov 2007
    Posts
    980

    Default Re: Question about cutting backerboard

    yes it can. go to the hardware and buy a diamond blade that will fit your saw, they will cost anywhere from 15 to 30 dollars depending on the quality of the blade. for doing this I would buy the cheapest. there won't be any advantage in buying the more expensive ones for what you are going to use it for.

  3. #3
    Join Date
    Jan 2009
    Location
    Taxachusetts
    Posts
    136

    Default Re: Question about cutting backerboard

    or a hand-held grinder with diamond blade, wear a mask probably with a filter, silica dust is unhealthy.

  4. #4
    Join Date
    Aug 2007
    Location
    Maryland
    Posts
    1,160

    Default Re: Question about cutting backerboard

    You can score it with a utility knife and snap the board. Two good scores then snap like drywall. Don't try to cut through. Use a metal straight edge to get a clean snap line if needed.
    Too much dust with a saw.
    Last edited by ed21; 09-22-2009 at 09:50 AM.

  5. #5
    Join Date
    Sep 2009
    Posts
    13

    Default Re: Question about cutting backerboard

    I used a caribided tipped knife which worked quickly without any mess. It is sold in the tile section of most hardwear stores and is inexpensive

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