(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 2 of 2

Thread: shower bottom grout replacement

  1. #1
    DIY Junior Member otterannie's Avatar
    Join Date
    Sep 2011
    Location
    Hampstead NC
    Posts
    1

    Default shower bottom grout replacement

    We recently bought a house about 15 yr old. The master shower is tiled wall and floor. The shower grout around the bottom was black. I have used bleach and cleaned, but its still black in places and I realized in many places the grout is gone or there's a gap. My husband was going to caulk to fill cracks and cover the black. I dried it and saw water in crack. I have been using paper towels to soak up the water out of the crack and a fan. Its still getting water (~ 7 days). Its only coming from one area on the side opposite the shower head. Should there be water down there? - I guess its coming from the shower pan. Does it need to be completely dry before we caulk? Will it cause a mold problem to caulk if there still water down there somewhere? Thanks, Annie

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,401

    Default

    Industry standards call for caulking all changes of plane (i.e., corners, and floor-wall junctions). So, if there's grout there, you can buy a grout saw and remove it. It must be dry and clean of any mold before you can apply new caulk. then, it must be left to cure for the time indicated on the instructions of the caulk you select (anywhere from hours to multiple days). If the crack is deep, it is best to use foam backer rod prior to caulking. This does two things, lets you use less caulk, and makes that seam more flexible so it has a chance to last longer (the caulk ends up with an hour-glass shape because of the round rod behind it that stretches better than a big hunk).

    But, for it to be weeping water for a week of non-use of the shower, it likely has other problems. Does the grout on the floor look like it is wet? How about part way up the walls? A leak behind the wall in the plumbing could cause what your'e seening, but not if the water pipes are on the other side of the shower. If the shower floor looks like the grout is damp, a more likely problem is that it was constructed improperly. Two things can cause this (that I know of): blocked weep holes in the drain, or a liner improperly installed flat on the floor. Many people think that the tile is the waterproof layer, but it is not. in a properly constructed shower, you should be able to not have leaks even before the tile are installed. In the pan, it is the liner that is the waterproof layer, and it MUST be sloped to the drain. Water WILL get under the tile, and it must flow down the slope of the liner to the weep holes inside the pan. If the liner is flat on the floor, water will (eventually) accumulate and create problems. It does not mean it will leak, but you'll start to get moisture problems in the shower since it can't dry out properly in between uses.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

Similar Threads

  1. Choosing the best Grout for your shower renovation
    By johnfrwhipple in forum Shower & bathtub Forum & Blog
    Replies: 7
    Last Post: 05-28-2013, 04:36 PM
  2. Grout Cracking and Water Leaking into shower pan
    By deb520 in forum Shower & bathtub Forum & Blog
    Replies: 9
    Last Post: 06-30-2011, 01:57 PM
  3. Grout in shower drain (ABS)
    By feather in forum Drain Cleaning
    Replies: 11
    Last Post: 03-17-2011, 05:52 AM
  4. Grout on shower base
    By 480sparky in forum Shower & bathtub Forum & Blog
    Replies: 1
    Last Post: 11-15-2007, 03:03 PM
  5. Replacing shower floor grout
    By Oldwriter in forum Shower & bathtub Forum & Blog
    Replies: 2
    Last Post: 10-10-2005, 06:15 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •