Setting toilet in plaster, never shim a toilet again..

Reply

  #1  
Old 10-03-15, 12:32 PM
lawrosa's Avatar
Super Moderator
Thread Starter
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 17,722
Likes Received: 2
Setting toilet in plaster, never shim a toilet again..

OK all. I took the opportunity to take a few pics of a recent toilet install I did the other day. Of course you all know I have never shimmed a toilet in 30 plus years.

You will never have a rocker if you use this method..

I took best pics I could with my low pixel phone.

Install johnny bolts and dry fit toilet without wax ring.. Make sure bowl is straight and draw a pencil line around base.

This pic shows after a drew the line. Remove toilet. I then install the wax seal..

Name:  0929151008-00.jpg
Views: 3804
Size:  26.6 KB

Then you mix your plaster. Add water , Add plaster to the water. Probably only about 1/2 cup water is needed.

Add enough plaster that its not soupy, but not too thick.. Basically has to stand up on edge when placed on line..


Name:  0929151013-00.jpg
Views: 2815
Size:  27.2 KB


Dab it around on the line that was drawn. Any excess I add to the front part under bowl as shown..

Name:  0929151015-00.jpg
Views: 4024
Size:  30.0 KB

Then carefully set toilet and press down firmly.. The install the bolts. Snug them up. Through out the course of the plaster drying and installing the tank, seat, and supply line I give them additional snugs here and there.

Name:  0929151016-00.jpg
Views: 3126
Size:  19.2 KB

Important part here.. And you have around 20 minutes before plaster sets up so dont panic..

You need to take the edge of your putty knife and score around the bowl and plaster.. If you dont do this youll have a heck of a time removeing the plaster.

You may as well pull the toilet and start over if you miss this step and the plaster sets..

Pics of scoring the wet plaster..

Name:  0929151018-00.jpg
Views: 2593
Size:  26.1 KB

Name:  0929151019-00.jpg
Views: 2704
Size:  20.7 KB

Now while your waiting for plaster to dry install tank, seat and supply line..


See part 2 for the finish..
 
Attached Images   
Sponsored Links
  #2  
Old 10-03-15, 12:35 PM
lawrosa's Avatar
Super Moderator
Thread Starter
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 17,722
Likes Received: 2
Setting toilet in plaster, never shim a toilet again... Part 2

After plaster is dry, ( I was semi dry here as I was pressed for time) but it was dry enough to remove the plaster for me.

Just flat blade your putty knife under the plaster and it will come off in one piece or a few small pieces as shown..

Name:  0929151052-00.jpg
Views: 3042
Size:  25.1 KB

Name:  0929151052-01.jpg
Views: 2575
Size:  26.4 KB

Name:  0929151053-00.jpg
Views: 2502
Size:  23.5 KB

Clean up what you need to with putty knife and wipe around bowl with damp rag.. You now have a toilet that will not rock or move..

Any plaster on the porcelain removes easy,,

Name:  0929151058-00.jpg
Views: 2293
Size:  21.6 KB

Name:  0929151059-00.jpg
Views: 2499
Size:  25.8 KB
 
  #3  
Old 10-03-15, 12:48 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 50,502
Likes Received: 103
Excellent thread and very easy to follow. The job looks good and you know it'll be strong with the plaster.
 
  #4  
Old 06-20-16, 08:46 PM
DIY1968's Avatar
Member
Join Date: May 2016
Location: USA
Posts: 35
I will tuck this idea away for the next time I need to shim a toilet... Thx
First toilet I set after laying new ceramic tile I used a wooden shim on the front left edge.
 
  #5  
Old 06-21-16, 03:49 AM
Norm201's Avatar
Member
Join Date: Sep 2013
Location: Western NY on edge of eastern Lake Erie (not NYC)
Posts: 6,817
Likes Received: 15
The only thing that bothers me is what chance of detecting a leak if wax ring fails down the road? How will you know before wood begins to rot? I'm not talking about a catastrophic leak, I'm talking about those very small, slow leaks. I always learned not to seal around the base of toilet just for that reason. But I like the tutorial. Sure beats using a shim.
 
  #6  
Old 06-21-16, 06:36 AM
Handyone's Avatar
Member
Join Date: Aug 2000
Location: U.S.
Posts: 5,451
Very good tutorial Mike.
I remember a post asking about shimming a sink pedestal and it looks like the same technique can be used.
 
  #7  
Old 06-21-16, 07:42 AM
Member
Join Date: Nov 2007
Location: MI
Posts: 2,608
Originally Posted by Handyone
I remember a post asking about shimming a sink pedestal and it looks like the same technique can be used.
I did but because the pedestal needed to fit into a shallow recess in the bottom of the sink, it couldn't be slid into place with plaster already on the floor. I had to mix the plaster into a thick putty so it could be pressed into the gap after the pedestal was in position--with shims that were removed after the plaster set up. Not fun to work with your hands--that stuff makes a sticky mess! But it worked great.
 
  #8  
Old 06-21-16, 07:48 AM
czizzi's Avatar
Forum Topic Moderator
Join Date: Jul 2007
Location: USA
Posts: 7,357
Likes Received: 6
The only thing that bothers me is what chance of detecting a leak if wax ring fails down the road? How will you know before wood begins to rot? I'm not talking about a catastrophic leak, I'm talking about those very small, slow leaks. I always learned not to seal around the base of toilet just for that reason. But I like the tutorial. Sure beats using a shim.
If you look at the pictures, he clearly places no plaster at the back of the toilet before he sets it. Therefore, if a leak occurs it will be visible out the back of the toilet.
 
  #9  
Old 06-21-16, 09:16 AM
Member
Join Date: Mar 2007
Posts: 1,349
Likes Received: 1
I have long suspected that a lot of the wood rot attributed to wax seals leaking is actually from sweaty tanks and bowls and that water ends up seeping through the bowl to floor joint. That can't happen if the bowl is installed this way.

I think my next toilet will probably be plastered.
 
  #10  
Old 09-13-16, 06:00 PM
Member
Join Date: Aug 2016
Location: us
Posts: 44
If you have a rough stone tile, like travertine, will the plaster come off like it does on the vinyl?

Thanks
 
  #11  
Old 09-13-16, 06:11 PM
lawrosa's Avatar
Super Moderator
Thread Starter
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 17,722
Likes Received: 2
If you have a rough stone tile, like travertine, will the plaster come off like it does on the vinyl?

Thanks
Yes. But you may need to clean out the little porous holes in this type of material somehow. While its still wet probably just a sponge.
 
  #12  
Old 04-19-18, 05:33 PM
Member
Join Date: Jul 2015
Location: USA
Posts: 45
I like the idea of the plaster seal but I can't get it out of my mind the image of a fat person grinding this plaster into dust over a ten year period. But you know something, my grandfather was a plumber and I think the crack was always filled with grout, maybe it was plaster. But the solidity of the installation never admitted of a possibility of a leak. Same with my parents house. I never encountered a leaky toilet until I was on my own. Seen many a crappy installation.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes