(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 10 of 10

Thread: replacing wall tile around bathtub - any suggestions welcomed

Hybrid View

  1. #1

    Default replacing wall tile around bathtub - any suggestions welcomed

    Does the following look like like I have my bases covered? Should I paint the wallboard behind the shower enclosure? Should I put some other sort of membrane between the wallboard and shower enclosure?

    House is 60yo and it looks like original wall was a cement covered by tile (ugly pink - glad to see it go . A repair was made over 35 years ago where they built up the studs to mate 1/2" white wallboard to existing 3/4" wall two feet up around tub.

    My plan is to rip out all of wall and replace with green board and put a plastic (we're poor) shower enclosure over top of the wall board. The tub mates against the studs with an upward curl. The wall board will mate against that top of curl, then I will fill in that curl completely with silicon based sealant which will seal bottom of wall board.

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,446

    Default

    Had typed in a reply and it got lost...bummer.

    Don't use the greenboard, it's basically junk and is no longer in the national codes (maybe not adopted by local yet) for much of anything...there are much better and reliable products. Tearing out the old mudbed walls (floated walls) is messy, the metal lath in it is sharp, and the stuff is heavy. It does make a nice wall to tile on, though. You'll probably find on an old house that the studs are not very even, and are HARD. You may need to predrill.

    You need a moisture barrier on the studs (plastic sheeting or roofing felt) lapped over the tiling flange of the tub, then cbu (cement board) if you want it to last. Use real thinset, not the stuff in a bucket - it's cheaper and will last. The mastic (even though sometimes the bucket says thinset, it's not) never cures like the cement, and will soften and can even wash away if it constantly gets wet.

    Check out www.johnbridge.com for help with tiling...they'll take good care of you.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3

    Default

    Thanks very much for your response!

    Quote Originally Posted by jadnashua View Post
    Had typed in a reply and it got lost...bummer.
    Yeah, I hate that. Sometimes, I remember and use notepad or kate, but the norm is for me to lose it...
    Quote Originally Posted by jadnashua View Post
    Don't use the greenboard, it's basically junk and is no longer in the national codes (maybe not adopted by local yet) for much of anything...there are much better and reliable products.
    I'll find out tomorrow. This is a temp remodel. If I ever live here, I'm gonna toss the tub and push the wall out a couple of feet.
    Quote Originally Posted by jadnashua View Post
    Tearing out the old mudbed walls (floated walls) is messy, the metal lath in it is sharp, and the stuff is heavy. It does make a nice wall to tile on, though. You'll probably find on an old house that the studs are not very even, and are HARD. You may need to predrill.
    Lots of black mold, but no structural damage, thank the Lord!
    Quote Originally Posted by jadnashua View Post
    You need a moisture barrier on the studs (plastic sheeting or roofing felt) lapped over the tiling flange of the tub, then cbu (cement board) if you want it to last. Use real thinset, not the stuff in a bucket - it's cheaper and will last. The mastic (even though sometimes the bucket says thinset, it's not) never cures like the cement, and will soften and can even wash away if it constantly gets wet.
    I'm just trying to figure out the cheapest solution that will last a while. I was originally attempting to put in some hand rails and accidentally push my hand through a rotten part of the wall. That's good in a way because I can now mount the handrails properly on facial boards.

  4. #4

    Default

    Well, the story I get from my local code compliance is that I can put anything up around my tub as long as I do not create a moisture lock. They are happy if I follow the manufacturer's directions for the product I will install. And the manufacturer recommends plain drywall. So be it.

  5. #5
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,446

    Default

    Putting drywall behind the tile of a shower is not bright. Now, if it is only a tub, and no shower is involved, it may survive. Paper is good mold food, and all it takes is a little moisture. People tend to think tile and grout is waterproof...maybe under perfect situations, but not in practical situations...the grout, even when sealed, still will absorb moisture. Code requirements are minimums, and often only address safety, not longevity.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  6. #6

    Default

    Quote Originally Posted by jadnashua View Post
    Putting drywall behind the tile of a shower is not bright. Now, if it is only a tub, and no shower is involved, it may survive. Paper is good mold food, and all it takes is a little moisture. People tend to think tile and grout is waterproof...maybe under perfect situations, but not in practical situations...the grout, even when sealed, still will absorb moisture. Code requirements are minimums, and often only address safety, not longevity.
    This is getting a little frustrating, I'm talking about apples and you are talking about oranges, while at the same time telling me my apples are no good. You mention there are pears, but you don't give me any specifics. I have been googling for several days and all I can find is apples and oranges. How do I search for the pears if I do not know what they are? Isn't a purpose of this forum to help me find the pears?

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
  •