(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 13 of 13

Thread: Mortar Cement for Fiberglass (Sterling Accord) Tub

  1. #1
    DIY Junior Member FenceLake's Avatar
    Join Date
    Jan 2012
    Location
    Wisconsin
    Posts
    2

    Default Mortar Cement for Fiberglass (Sterling Accord) Tub

    Going to set tub on mortar bed. Looked around on board and decided to use the Quickrete Sand/Topping Mix as suggested. Will use the pile method.

    The question I have is how much should I mix up for a 60" x 30" tub? Can I mix in a 5 gal bucket by hand? I've only ever mixed cement in a wheelbarrow, and don't really want to drag that into the bathroom

    Thanks for the help?

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Location
    Bothell, Washington
    Posts
    14,212
    Blog Entries
    1

    Default

    Using a five gallon bucket works fine. If you have a 1/2" drill, you can buy a paddle mixer for it.

    Last edited by Terry; 11-13-2013 at 09:06 PM.

  3. #3
    DIY Junior Member FenceLake's Avatar
    Join Date
    Jan 2012
    Location
    Wisconsin
    Posts
    2

    Default

    Thanks for the quick response!

    Is a 5 gal bucket full enough? Or do you think I will need multiple 5 gal batches? Just trying to get a feel for how big the piles should be to make sure that I am using enough..

  4. #4
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Location
    Bothell, Washington
    Posts
    14,212
    Blog Entries
    1

    Default

    You're just using a few piles. One is plenty.

    If you place too much mortar below the tub, it will never set down far enough.




    Last edited by Terry; 11-13-2013 at 09:07 PM.

  5. #5
    Test, Don't Guess! cacher_chick's Avatar
    Join Date
    Jan 2008
    Location
    Land of Cheese
    Posts
    3,157

    Default

    I used about a gallon bedding a 60" Sterling Accord shower base.

  6. #6
    DIY Senior Member dlarrivee's Avatar
    Join Date
    Jun 2009
    Location
    Canada
    Posts
    1,172

    Default

    You wont be able to mix it by hand in a 5 gallon pail.

    You can mix it with a 1/2" drill and paddle in a bucket, add the water first, then add dry mix in portions.

    It's hard to say how much you will use, it depends on the design of the tub.

    I'm assuming Terry doesn't shoot for full coverage under the tub, just a few solid piles under it. Personally I use enough to support every inch that I can.

  7. #7
    DIY Junior Member blove1344's Avatar
    Join Date
    Sep 2012
    Location
    New Cumberland,PA
    Posts
    13

    Default

    I have a question about the mortar bed also. I am going to install a sterling tub and surround and it is recommended to use a mortar bed even though
    the floor is level. My question is: Is it ok to have the legs embedded in the mortar? This seems to possibly throw off the level. Am I over thinking this?
    Thanks
    Last edited by blove1344; 09-09-2012 at 07:07 AM.

  8. #8
    In the Trades Gary Swart's Avatar
    Join Date
    Sep 2004
    Location
    Yakima WA
    Posts
    7,246

    Default

    The purpose of the mortar is to provide support for the floor of the tub. It does not have to cover every square inch, in fact, it will be a problem if you use too much as the excess would tend to raise the tub. You do not have to embed the legs, they should rest on the floor. Yeah, you're probably over thinking this, but that's normal when doing something for the first time when there is no redoing possible.

  9. #9
    DIY Junior Member blove1344's Avatar
    Join Date
    Sep 2012
    Location
    New Cumberland,PA
    Posts
    13

    Default

    Thanks Gary,
    There are a lot of legs under this tub and I can't for the life of me figure out how I would spread mortar and not have at least some legs imbedded
    and end up with a lopsided tub. This setup came with a pad to be placed under the tub. Everyone says to use mortar instead.

  10. #10
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,434

    Default

    Depending on the cement/sand ratio, a sand mix can be like wet beach sand, or somewhat squishy. You can't mix in too much cement or it will shrink (true if you use too much water, too), and maybe even flow, but a moderately rich mix should still squish rather than just compact. While the floor may be level, the tub itself may not be perfect. Embedding it in mortar allows you to ensure the top flange is perfectly level. Fiberglass will fatigue and eventually crack if it isn't supported. Plus, when supported, it feels MUCH more substantial.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  11. #11
    DIY Junior Member blove1344's Avatar
    Join Date
    Sep 2012
    Location
    New Cumberland,PA
    Posts
    13

    Default

    Thanks Jim. That's the way I'll do it.

  12. #12

    Default

    The best mud for this: Brick mortar that is slightly stiffer than bricklayers use. Make five or six mounds on the floor about six inches in diameter and four or five inches high. Arrange them so they will add support to the entire floor. Stay away from the drain. Immediately set the tub or shower receptor in over the mounds and push it down all the way to the floor. You can weight it down or place nails or screws around the top flange to hold it in place. Let the mud set overnight. You CAN mix it by hand if make only a little at one time, and you only need a little -- maybe half a bucket.
    John Bridge, Ceramic Tile Setter :-)

    http://johnbridge.com/vbulletin/index.php

  13. #13
    DIY Junior Member blove1344's Avatar
    Join Date
    Sep 2012
    Location
    New Cumberland,PA
    Posts
    13

    Default

    Thanks John, Sounds good. Does that mean that some of the legs will be embedded in the mortar?
    Last edited by blove1344; 09-24-2012 at 12:14 PM.

Similar Threads

  1. Sterling Accord bathtub, installation with pictures
    By tubdummy in forum Shower & bathtub Forum & Blog
    Replies: 5
    Last Post: 11-13-2013, 09:04 PM
  2. Replies: 0
    Last Post: 01-03-2011, 10:26 AM
  3. Sterling Accord Seams
    By av8tor9804 in forum Shower & bathtub Forum & Blog
    Replies: 0
    Last Post: 04-18-2010, 03:38 PM
  4. Sterling Accord Installation
    By alpbach in forum Shower & bathtub Forum & Blog
    Replies: 0
    Last Post: 01-25-2010, 02:34 PM
  5. Americast vs Sterling Kohler Accord?
    By pittnh in forum Shower & bathtub Forum & Blog
    Replies: 2
    Last Post: 02-18-2009, 08:06 AM

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
  •