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Unread 03-26-2021, 05:52 AM   #1
gtr
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Shower wall/ Pan install

Good morning all! I'm back for another round of endless questions on next project. A few questions on this upcoming install. going to tile walls and have a porcelain coated steel pan for the floor (pic).
1) What needs to go under the pan? Mud bed? Felt?
2)Intend to use Hardibacker/Redgard on walls. do I go Hardibacker from drywall all the way to floor? If so, the screws used for securing the pan flange (pic) will compromise the moisture seal integrity?
3) Should I set the pan, them come down over the Flange/screw/ washers with the Hardibacker?
As always, appreciate this forum, always my go-to, wealth of knowledge here is unsurpassed for anyone undertaking a DIY project.
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Unread 03-26-2021, 08:12 AM   #2
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Welcome back, Brian.

1. Whatever the manufacturer says.

2. Don't understand the question.

3. I would.

My opinion; worth price charged.
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Unread 03-26-2021, 01:57 PM   #3
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Apologies, 2) was an alternative to 3). I figured it was wrong to go all the way to the floor with the HB, then screw into it, leaving the screw/ washer coverd only by tile hanging over screws/ lip of floor basin, just confirming that I should do #3 instead of #2.
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Unread 04-01-2021, 10:35 AM   #4
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I am going to frame up a seat at the rear of this shower. Is 1/2" OSB board covered by 1/2" Hardibacker /Redgard sufficient to encapsulate the seat area to ready for tiling?
Additionally, would the group recommend going all the way to the ceiling with Hardibacker, or is it sufficient to meet up the drywall as shown with Hardibacker?
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Unread 04-02-2021, 08:25 AM   #5
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Hi Brian,

Setting that type of base I always pile up small mounds of mortar (fat mud) on the floor before setting the thing down. Space them about a foot apart. Set the base in and stand on it to get it all the way down to the subfloor.
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Unread 04-02-2021, 10:54 AM   #6
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Thumbs up

Greatly appreciate the advice on the pan!
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Unread 04-03-2021, 03:05 PM   #7
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Hello all,
1) is OSB suitable to cover the framed up shower seat, followed by 1/2 Hardibacker/ Redgard?
2) is it OK to leave drywall as pictured, and run Hardibacker up to it?
Appreciate, Brian
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Unread 04-03-2021, 03:12 PM   #8
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1. Yes. The thicker Hardiebacker is not necessary. You could use their 1/4" version, but no harm in using the thicker stuff if you want. I'd recommend you install it on the bench top the same way they recommend for floor installation. The framing on that bench must be sloped to the drain, of course.

2. You can stop the Hardibacker at the drywall shown above your shower head if you want. Keep in mind that Hardiebacker 500 is not 1/2" thick and is not likely to match up to your drywall well.

My opinion; worth price charged.
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Unread 04-03-2021, 05:11 PM   #9
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Thumbs up

Perfect, thanks for the time and consideration!
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Unread 04-09-2021, 01:28 PM   #10
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Does all of this need to come up to lay the floor tile? Shower pan going in shower area, held up with old one since 72, so I’m guessing I’m ok there, was windering if
A) the linoleum needs to come up befor placing hardibacker
B) does the presswood (subfloor?) need to all be ripped out and replaced with OsB?
Thanks as always, Brian
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Unread 04-09-2021, 05:29 PM   #11
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If the vinyl is not cushioned, James Hardie may not care if it's under his Hardiebacker.

If by pressboard you mean particle board or MDF or similar, yes, it must come out.

And you need to know what's under it.

You also need to evaluate the joist structure to determine if it's suitable for a ceramic tile installation.

My opinion; worth price charged.
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Unread 05-15-2021, 02:18 PM   #12
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Hey gang of helpfuls!
Tearing out presswood to put particle board down.
questions)
1) should the main floor (1”) have the felt paper between it and the particle board?
2) the shower pan needs a “dry mud bed” to set in, the videos from the manufacturer shows the pouring this mud directly onto the wood, is this needed for bonding, or should there be a barrier (felt paper) over the particle board as well (in between the particle board and the shower pan), for a moisture barrier?
Appreciate, as always, Brian.
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Unread 05-15-2021, 05:15 PM   #13
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This job just keeps getti better!
Should a shower pan listed as “barrier free” have a 1 3/4” curb on it??! I am completely confused after picking this up today?
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Unread 05-15-2021, 05:18 PM   #14
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It may have to be build into the floor so you step down into it. I've never installed one like that, maybe someone else has.
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Unread 05-15-2021, 07:49 PM   #15
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I see no way that this will be flush with any subfloor. I expected a1/4” at most.
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