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Old 10-07-2017, 03:08 PM   #1
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Easiest to cut cement board


I've got to install 1/2" cement board in my shower and I'd like to know which brand is easiest to cut. I'm assuming they are all equally good for shower wall use

Hardiback
Durock
Wonderboard lite

Thanks in advance.


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Old 10-07-2017, 03:13 PM   #2
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Re: Easiest to cut cement board


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I've got to install 1/2" cement board in my shower and I'd like to know which brand is easiest to cut. I'm assuming they are all equally good for shower wall use

Hardiback
Durock
Wonderboard lite

Thanks in advance.


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Out of those; definitely not Hardi. That stuff sucks to cut. Durock is easy, never used Wonderboard but it looks like Durock. Greeneboard is easy to cut and permabase is about the same as Durock but is heavier.
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Old 10-07-2017, 03:22 PM   #3
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Re: Easiest to cut cement board


I recall Hardibacker was destroying my jigsaw blades.


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Old 10-07-2017, 04:14 PM   #4
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Re: Easiest to cut cement board


Cut it with either a backer blade on your circle saw or with a 4" grinder with a 4" tile blade.

http://www.homedepot.com/p/Avanti-Pr...6CHR/203914961
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Old 10-07-2017, 04:58 PM   #5
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Re: Easiest to cut cement board


It’s messy, but the cleanest cuts on cement board are with a grinder and a 4” blade as @chandler48 mentioned.
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Old 10-07-2017, 05:05 PM   #6
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Re: Easiest to cut cement board


Or score Hardi board and snap it... for a shower I'd think scoring and snapping would be good enough...
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Old 10-08-2017, 07:24 PM   #7
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Re: Easiest to cut cement board


If you read the instructions on the hardi, it says do NOT cut it with a circular saw, jig saw, or any other kind of saw. Spend five bucks at the bog box and buy a carbide scorer and just score and snap the hardi. VERY easy, even the holes for the spigot, handle, whatever. Ron
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Old 10-08-2017, 08:30 PM   #8
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Re: Easiest to cut cement board


As a point of clarification, when I said “cement board” I was referring to duroc and other cementious boards vs hardie backer. Hardie cuts fine with the carbide scoring blade, but I would always take duroc over a Hardie board.

Anytime you are cutting anything with portland or silica, you need proper PPE.
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Old 10-09-2017, 05:59 AM   #9
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Re: Easiest to cut cement board


I went with wonderboard lite. I had to bring in 7 sheets of 1/2 (7/16”) and 3 sheets of 1/4” myself. Wanted to save my back.


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Old 10-09-2017, 06:00 AM   #10
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Re: Easiest to cut cement board


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If you read the instructions on the hardi, it says do NOT cut it with a circular saw, jig saw, or any other kind of saw. Spend five bucks at the bog box and buy a carbide scorer and just score and snap the hardi. VERY easy, even the holes for the spigot, handle, whatever. Ron


I’ve tried to score and snap 1/4” hardibacker with a Home Depot carbide tip blade. I had to cut like 4” off and it was a pain to do with that blade. Maybe the blade was shot.

This stuff:




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Old 10-09-2017, 09:16 PM   #11
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Re: Easiest to cut cement board


Score multiple times and bend TOWARDS the score, exactly the opposite of the way that you do Sheetrock. Ron
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Old 10-09-2017, 09:38 PM   #12
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Re: Easiest to cut cement board


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Score multiple (50+) times Ron
No thanks. I'll Score Durock once.
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Old 10-10-2017, 08:44 PM   #13
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Re: Easiest to cut cement board


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No thanks. I'll Score Durock once.
Weak hands and wrists ;-) Couple of scores with carbide cutter for me, put a two bye under the part you're going to keep and just bend over that. While I PREFER durock, I often have to work with what is donated....and often it is hardi. And yeah, you've gotta hit it with a wet sponge before you put put thinset on it else it will suck out the thin set's moisture. Ron
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Old 10-10-2017, 09:03 PM   #14
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Re: Easiest to cut cement board


I still like concrete over fiber cement. There are going to be a bunch of sick people that worked with FC thinking it was just dust.
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