Is this leak

Am currently in getting my bathroom repaired for leaks due to grouting issues.
We have removed and installed sidings, tyvek, insulation and wonderboard. We finished wonderboard installation a few days back. Post spackling, we let it cure and I see following stains.
https://www.flickr.com/photos/33650962@N03/15497416954/ https://www.flickr.com/photos/33650962@N03/15933685769/
are these stains, water leaks ? Please advice.
Regards
AT
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On 12/27/2014 10:19 AM, AT wrote:

The sidings wonderboard days removed advice water tyvek?
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On Saturday, December 27, 2014 10:32:34 AM UTC-5, Fred wrote:

Sorry fred didnot quite understand , pls expand
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On 12/27/2014 10:58 AM, AT wrote:

That should be painful.
"pls expand".
- . Christopher A. Young Learn about Jesus www.lds.org .
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On 12/27/2014 11:06 AM, Stormin Mormon wrote:

D i d T y v e k s i d e o f g r o u t e x p a n d p l s?
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It's not clear what the photo is of. Is that a painted wall, and you spackled over the joint? What has siding and Tyvek got to do with it? You didn't fully explain what you're doing.
Based on only the photo I'm guessing you put joint compound over a joint between an old painted wall and new concrete board. That's not a good idea. You'll end up with a joint exposed that's hard to keep from cracking again, especially if it's not taped. If you want any hope of it not recracking you should use mesh tape and Durabond setting-type compound. But there's a much better way to do it: Clean the compound off. Bonding tiles to compound is just sticking them to chalk, essentially. It's much better to skip the compound and plan the last tile to slightly overlap the joint. The tile will then be stuck well to the concrete board and the unstable joint will be covered.
The stain is probably nothing to worry about, but it's hard to know for sure without knowing more. If you know you've stopped leaks then the stain will just be something leeching through from the wallboard.
Also, don't use compound or spackle in the joints of the concrete board. It defeats the purpose of the concrete board. If you think you need to fill the corners, do it with thinset and thick mesh tape.
Ignore Fred. He's just a mean-spirited person giving you a hard time about your use of English. He's not offering help.
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On Saturday, December 27, 2014 11:27:07 AM UTC-5, Mayayana wrote:

Thanks Mayayana this truly helps, your understanding is correct, the joint is between old wall and wonderboard, I have used mesh which is not visible in photo. Your advice is very helpful
Just a background, since we had leak in past, we had to replace the Plywood as well, and that meant opening up sidings and replacing tyvek, insulation etc. My concern was, did we ensure that Sidings/Tyvek installation was do ne properly. It rained pretty heavily three days back. Thereby just checkin g and getting opinion based on what I saw one day after installation of won derboard (and it rained the night I installed the wonderboard)
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Just a background, since we had leak in past, we had to replace the Plywood as well, and that meant opening up sidings and replacing tyvek, insulation etc. My concern was, did we ensure that Sidings/Tyvek installation was done properly. It rained pretty heavily three days back. Thereby just checking and getting opinion based on what I saw one day after installation of wonderboard (and it rained the night I installed the wonderboard)

You certainly need to make sure that the leak is stopped, one way or another, but the stain could have come from staining in the drywall, due to the original leak. If you paint over the joint you can just use some stain sealer paint (after primer) to deal with that.
I don't have any great ideas about how to confirm that the leak is fixed, other than to open up the wall and wait for another rain. Or check on the outside. You should be able to see whether the siding is done properly. The Tyvek is a wind barrier. If it's stopping water then you'll have problems soon. Water shouldn't be getting that far. I suppose you could hose down the side of the house and see if the wall inside gets wet, but that shouldn't be necessary.
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