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Unread 10-21-2019, 11:26 PM   #1
reelbusy
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hardibacker hydrodefense

Hi , new here posting (read lots of course) ran across this new hardie product, at the local big box (online haven't seen it in person yet), cost about 2x normal hardiebacker. the marketing is you could use this without having to waterproof (redgard,hydro,etc) or needing a vapor barrier behind (but ends can still wick)

I know that's more of a statement than a question =) just no info or posting i can find on the web yet, figured i'd be first. couple things i noted from the docs, steamroom application, in a bath /shower you'd still h20 proof joints , fasteners,ends curious if anyone has/is using this
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Unread 10-22-2019, 12:02 AM   #2
Lazarus
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Been using the relatively new "Trident" board, available at Dal Tile. Same properties you stated...but about the same as regular CBU....
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Unread 10-22-2019, 10:11 AM   #3
reelbusy
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yeah that one has a membrane it seems. the hardie seems to say throughout the board, i suppose the reason for end sealing is capillary wicking. membrane is easier for me to comprehend than hydrodense, no idea quite what that is
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Unread 10-22-2019, 11:59 AM   #4
cx
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Not sure I see much advantage to paying twice as much for a Fiber/Cement board and still needing to fill and tape the seams and then waterproof all the seams and fastener penetrations.

I'm not a big fan of the waterproof foam boards at their current pricing, 'specially for the DIY installer, but if you're going to use a waterproof board, why not go whole hog and also benefit from the lighter weight and easier handling of a foam board?

But with something as simple and easy to install as the sheet membranes currently available, especially the USG Shower System membrane, I think I'd stay with that system for now.
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Unread 10-22-2019, 10:02 PM   #5
reelbusy
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for a bath/shower, same thing i was thinking too..not sure i see it comparatively.
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Unread 10-28-2019, 03:06 PM   #6
Tiger Mountain Tile Inc
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Wait a second... Hardibacker isn't waterproof?

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Unread 10-28-2019, 04:04 PM   #7
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Que Bowdarkskull!
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Unread 10-28-2019, 05:23 PM   #8
Kman
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It's not waterproof, but it serves the same purpose. It sucks up all the water that gets behind the tile before it can get into the walls.
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Unread 10-31-2019, 05:20 PM   #9
tman1991
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Hardiebacker with Hydrodefense

Anyone use this yet? Its very new.

https://www.jameshardie.com/products...d/hydrodefense
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Unread 10-31-2019, 06:15 PM   #10
navyson
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I saw it at Lowe's the other day when picking up some grout. About $9 more than a sheet of regular. I'm interested in knowing if anyone's used it also. If it cuts out waterproofing (except for joints), would be nice.
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