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Old 01-10-2018, 06:58 PM   #1
tyscott
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Tyler's Bathroom Renovation

Hi guys. My coworker Steve in Denver told me you guys would give me the best advice for my full bathroom remodelling project. I've never remodelled a bathroom before, so keep that in mind.

Currently, I'm trying to plan out which waterproofing material I will use for the tile surround above the tub.

1. I wanted to know what your opinions on DensShield is.
2. If I do choose to go with it, how do I waterproof the corners?
2a. Can I just use a 5" wide USG Durrock membrane?
2b. Or perhaps the Kerdi equivalent?
3. How do I waterproof the screws that go into the studs?
3a. Do I countersink them and put caulking over it?
3b. What caulking would I need? Kerdi fix? Plain 100% silicone?
4. What other waterproofing strategies would you recommend and why?
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Old 01-11-2018, 12:26 AM   #2
Steve in Denver
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What, has nobody heard of DensShield?

(Bump)
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Old 01-11-2018, 07:03 AM   #3
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Welcome to the forum, Tyler.

First, just to clarify, this is just a tub with no shower, correct? If it's a shower that's a different ball game.

I'm not a fan of denshield, but if it's done properly it can work. I think they recommend their sealant over the screw holes and seams. The problem I have with Denshield is the gypsum core, so one little slip-up and it's trashed by water.

I would just use a waterproofing like Redgard over a cement board like Durock or Permabase. Everybody has their preferences, it's just important that you use the one you have chosen according to manufacturer's instructions.
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Old 01-11-2018, 08:41 AM   #4
tyscott
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Thanks Kevin,

To answer your question, it is a tub and I want to do a tile surround.

When you use redgard, how do you waterproof the corners?
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Old 01-11-2018, 09:09 AM   #5
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Hi Tyler,

I would not use Denshield.

With RedGard you use backerboard tape and thinset in the corners. Flatten the thinset as if you were taping drywall. The RedGard goes over it. Two coats of RedGard.
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Old 01-30-2018, 06:30 PM   #6
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Leveling a tub

Can I get some advice on leveling a tub?

Here is the exact type of tub:
American Standard Princeton 60-in White Porcelain
It's an alcove tub made of Americast (porcelain-enameled steel with plastic insulation).
Attached is a picture of the bottom of the tub

Here is what I'd like to know:
  1. What type of mortar I need to level it.
    • I have some extra VersaBond mortar and wonder if that's good enough.
    • How thick should I mix it?
  2. Can I put a layer of plastic (a cut up trash bag) between the mortar and the floor and also between the mortar and the tub?
    • I was thinking this would be best so that nothing gets damaged the next time someone takes out the tub and also in case I mess it up I can do it again.

Keep in mind that I've never installed a tub, so extra details will be appreciated.

Also, I've been assuming that using a mortar bed would be better than not using one even though the instructions say that a mortar bed is optional. Let me know if I'm wasting my time with a mortar bed.
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Old 02-02-2018, 11:35 AM   #7
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Any help would be appreciated (bump). Thanks.
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Old 02-02-2018, 12:27 PM   #8
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1. Type N mortar will work fine and commonly available. Type s would work too. Don't use thinset mortar. Mix it stiff, stiff enough that it you can pile it up with little slump.

2. Plastic will slow down curing some if on floor, which might be a good thing, but I wouldn't bust a gusset to do it. I wouldn't put plastic between tub and mortar.

How I do it: (I'd consider this permanent)

Do a dry run and check tub rim for level both ends and back. If it's out I'd figure on a level ledger of some sort, either continuous or corners only. Install or adjust ledger and recheck until it's right.

As near as possible mark where that gridded bottom lands on your floor. Stage tub and mix mortar. Place piles within the marked area. It doesn't have to be pretty. I usually gun some blobs of PL Premium on ledger in areas I want conforming support. Not so much for the adhesive but once it cures it will actually support weight.

I'm often working by myself so I sort of roll the tub in so I'm not shoving mortar towards wall by sliding tub. Plop into place, adjust as necessary, get in tub and do a little dance so it squashes the mortar and mushes into PL. Double check level. Assuming that checks out, walk away till tomorrow.

Assuming you have access from underneath, you can do drain and overflow tomorrow. It just gets in the way if preinstalled but in some cases one may need to.

Then waterproofing, tile, grout, fixtures, caulk and Bob's yer uncle.
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Old 02-02-2018, 03:04 PM   #9
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Thanks, Peter. That helps.
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Old 02-02-2018, 04:53 PM   #10
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About Waterproofing the Corners

So regarding my first post, I decided to go with RedGard for waterproofing. What I wondered though was how I am going to waterproof the corners of the walls and in the niche.

Can I take some waterproofing membrane fabric and use redgard to adhere it to the wall and then redgard over it? If not, what kind of mesh tape would you recommend?

I saw this stuff too, but I'm worried that the redgard won't fill the large gaps very well. What do you guys think?
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Old 02-03-2018, 12:54 PM   #11
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I dont use liquid wp much but I believe you can use a fabric with the redguard to seal your corners.
Most times people use alkali resistant mesh tape and thinset, followed by a primer coat of waterproofing if necessary. Then apply the membrane to the recommended mil thickness. More isn't better be sure to follow the directions. A wet film guage is needed if you want to apply it correctly.
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