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Unread 05-26-2009, 08:04 AM   #1
3 Baths - Trav Entrance - 4 Mosaics - Done !!!
Larryl9797's Avatar
Join Date: Feb 2009
Location: Central Connecticut
Posts: 95
Ultra white grout turning brownish?

I have a 1 year old shower redo that is showing a browning of the grout from the bottom up.The Grout is basic ultra white - unsanded.
Could this be mastic leeching thru or is it mold?

I tried to clean it up and I claened up the pink and black mold, but the light brownish color stayed...

Anyone have an idea of possible fixes or possible causes??

If it comes down to it......

I may end up getting a grout bit for my rotozip, clearing out the grout and reapplying spectra lock...


Larry L. - 3 Bathrroms done .... now circling back on the bathrooms I did before I found this forum!
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Unread 05-26-2009, 08:59 AM   #2
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Larry - those were scary words to say in the same sentence as shower. I'm talking about mold (any color), mastic and funky stuff happening from the bottom up.

Sounds like a moisture issue, but I am by far not a shower pro. Hang in there and one of the gurus will chime in shortly.


Relax - it's a rock! What could go wrong?!

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Unread 05-26-2009, 09:52 AM   #3
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Larry, is this a shower you completed? If so, tell us how you did it. Main interest here is the area of the drain and weepholes.
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