Hardie plank on cement

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Old 07-22-15, 08:10 PM
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Hardie plank on cement

can you use construction adhesive like Loctite 400 to glue short,24 inches, pieces of hardi plank to cement block..?? to avoid drilling into the block...??
 
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Old 07-22-15, 11:06 PM
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Glue itself may not be a permanent solution. ....can I ask why you are afraid to use a mechanical fastener?
 
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Old 07-23-15, 04:05 AM
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What are the short pieces of Hardieplank used for? Obviously not an entire wall of planking.
 
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Old 07-23-15, 03:36 PM
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part of a wall. just 2ft by 6 ft next to a door. That place is solid cement. The rest will be screwed into wood sheathing.
But I dont want to screw in cement. It would tear up the cement block. 400 is supposed to be strong.
 
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Old 07-23-15, 04:10 PM
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Still makes no since to me.
A picture would be nice where you plan to do this.
Is this inside, outside?
 
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Old 07-23-15, 04:15 PM
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I think it could be done. The problem would be holding the pieces in place as the PL sets. I've used just PL type stuff to adhere wood to block, but you really have to make sure it doesn't slip til it cures and that can be quite a while.
 
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Old 07-23-15, 05:23 PM
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Why would it tear up the block? Are you thinking of something other than Tapcon.
 
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Old 07-23-15, 06:18 PM
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Hardie will most likely not warranty fastening their product without a mechanical fastener.

I've looked through their product installation guide and it does not cover this type of install anywhere. The closest condition involves installing furring strips to the block and fastening the hardie to the strips. Most likely this won't work for you unless you furr out the wood framed area as well (which may not be pratical)

If you have your heart at on this, approach it knowing that you may not have the warranty to fall back on.

And running tapcons 16" oc will not "tear up the block". It is a perfectly accepted practice. The problem you will have with tapcons is that the screw heads will stand proud of the siding and may not give the best asthetically pleasing results......
 
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Old 07-23-15, 06:38 PM
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If these are lap planks, PL won't work, because your gluing surface is at an angle and is small. BUT, since this is a DIY forum, I don't see any reason you can't try it. I would use something like PL8X. It has an early tack off and may help with slippage.
 
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Old 07-23-15, 08:19 PM
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its only a few short pieces so I will try it. I have the Gecko plank holders so I can just leave the piece in there and let it set up.
 
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Old 07-23-15, 08:34 PM
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I'm on board with Perry.
Plus trying to use Tap Con's on Hardee plank it just going to crack it.
If this is an outside wall I'd also at least add 3/4" foam board between the straping.
 
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Old 07-24-15, 07:00 AM
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Furring the wall first was my thought.
 
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