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Old 04-20-2011, 06:48 AM   #16
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Kerdi/Schluter Shower Install


Okay, so I used that red tape for vapor barrier and such to seal off the drain. Now I sealed it about an inch or so down the drain and so that it doesn't interfere with the kerdi membrane at all.

Anyways, overnight I lost about an inch of water over a 10 hour period. Now, I couldn't find any signs of water leaking from any walls that are opposite to the shower walls, including the main floor ceiling.

So, I think that with that much water being lost it would definitely show up somewhere. My conclusion is that it must be slowly leaking down the drain.

Any ideas?

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Old 04-20-2011, 07:11 AM   #17
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Kerdi/Schluter Shower Install


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Okay, so I used that red tape for vapor barrier and such to seal off the drain. Now I sealed it about an inch or so down the drain and so that it doesn't interfere with the kerdi membrane at all.

Anyways, overnight I lost about an inch of water over a 10 hour period. Now, I couldn't find any signs of water leaking from any walls that are opposite to the shower walls, including the main floor ceiling.

So, I think that with that much water being lost it would definitely show up somewhere. My conclusion is that it must be slowly leaking down the drain.

Any ideas?
Get a test plug at a plumbing supply and test it again if you have doubts.
Ron
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Old 04-20-2011, 07:15 AM   #18
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Kerdi/Schluter Shower Install


Okay good thinking Ron. Let me ask, how long should I let the area dry for before installing tile?
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Old 04-20-2011, 07:24 AM   #19
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Kerdi/Schluter Shower Install


I wouldn't trust tuck tape to stay all that water proof. You can go to the dollar store and pick up a cheap rubber or plastic ball ...coat the edge of the drain with vaseline and keep a weight on the ball over the drain and try again
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Old 04-21-2011, 08:08 AM   #20
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Kerdi/Schluter Shower Install


Okay, I'm starting to get frustrated now.

I noticed some small air bubbles coming from a few pinholes here or there last night during another test. So I drained it again, problem is I'm not sure how many there is.

I think I'm going to install another sheet of Kerdi over top the one thats currently down, rather than just doing a bunch of patches. I'm also going to let it extend up the walls and curb as well for added protection.

Thoughts? Ideas?

I'm starting to feel worn out...
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Old 04-21-2011, 08:51 AM   #21
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Kerdi/Schluter Shower Install


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Okay, I'm starting to get frustrated now.

I noticed some small air bubbles coming from a few pinholes here or there last night during another test. So I drained it again, problem is I'm not sure how many there is.

I think I'm going to install another sheet of Kerdi over top the one thats currently down, rather than just doing a bunch of patches. I'm also going to let it extend up the walls and curb as well for added protection.

Thoughts? Ideas?

I'm starting to feel worn out...
I don't know if putting one layer of Kerdi over another is really a good idea, adhesion wise. I'd call Schulter for a recommendation.
Ron
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Old 04-21-2011, 09:43 AM   #22
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Kerdi/Schluter Shower Install


My thinking is that those bubbles you see are just from the surface of the kerdi since you didn't see them during you first test. I get air bubbles on the surface of my kitchen sink when I fill it and I know its not leaking. I would take a sponge and wipe the surface down (with the water in), let it settle and see if they come back. I'm with Ron on the double layer kerdi..maybe just for small patches...but if you do contact Schluter, I would be curious to know their reply.
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Old 04-21-2011, 09:47 AM   #23
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Okay, I contacted Schluter. They said its fine to double the membrane up.

I'm really not happy with the job I did on the base. I'm basically going to redo the whole base with a second layer.

Anyone know if its possible to remove the first layer and then just install a new layer? Or would it be safer just going right over top and not trying to remove it?
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Old 04-21-2011, 10:15 AM   #24
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UGH I am picturing a nightmare of thinset patching and scraping if you remove the first layer. If schleter says its fine to double up, thats what I would do.
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Old 04-21-2011, 10:23 AM   #25
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UGH I am picturing a nightmare of thinset patching and scraping if you remove the first layer. If schleter says its fine to double up, thats what I would do.
Ya, I suppose thats probably just the easiest solution.
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Old 04-22-2011, 07:46 PM   #26
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Kerdi/Schluter Shower Install


I'm keeping an eye on this thread, as my Kerdi shower project is coming up soon.
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Old 04-23-2011, 12:09 PM   #27
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Kerdi/Schluter Shower Install


Did you use the schluter shower base or made a sand bed and applied the membrane on top?

I am going to be doing a project soon also and was wondering if there was any point of using cement boards for the wall or just regular anti-moisture dywall since it's getting a membrane on top anyway.
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Old 04-23-2011, 01:54 PM   #28
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Kerdi/Schluter Shower Install


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Originally Posted by DIYadam View Post
Okay, I contacted Schluter. They said its fine to double the membrane up.

I'm really not happy with the job I did on the base. I'm basically going to redo the whole base with a second layer.

Anyone know if its possible to remove the first layer and then just install a new layer? Or would it be safer just going right over top and not trying to remove it?
The kerdi will just peel off. The thinset layer is so thin there's no need to fill in as the next trowel layer will easily fill in the gaps.
Ron
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Old 04-26-2011, 06:29 AM   #29
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Kerdi/Schluter Shower Install


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Did you use the schluter shower base or made a sand bed and applied the membrane on top?

I am going to be doing a project soon also and was wondering if there was any point of using cement boards for the wall or just regular anti-moisture dywall since it's getting a membrane on top anyway.
I used the shower kit that came with the base and curbs. I don't trust myself to be able to make a decent slope.

As for the walls, might I suggest their Kerdi board. I actually ended up getting some to build a ledge on the one side of my shower. It's incredibly easy to use and lightweight.

Pics to come.
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Old 04-26-2011, 06:30 AM   #30
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The kerdi will just peel off. The thinset layer is so thin there's no need to fill in as the next trowel layer will easily fill in the gaps.
Ron
This is exactly what I ended up doing.

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