Ceramic Tile Advice Forums - John Bridge Ceramic Tile

Welcome to John Bridge / Tile Your World, the friendliest DIY Forum on the Internet


Advertiser Directory
JohnBridge.com Home
Buy John Bridge's Books

Go Back   Ceramic Tile Advice Forums - John Bridge Ceramic Tile > Tile & Stone Forums > Tile Forum/Advice Board

Sponsors


Reply
 
Thread Tools Search this Thread
Old 11-16-2018, 10:56 AM   #1
danhcdo
Registered User
 
Join Date: Nov 2018
Posts: 2
Shower drain not raised?

Hello everyone

I need urgent help. I hired a contractor to build an addition and master bath with shower.

Is there anyway to find out if this is correct? Installing the shower floor, the plumber has to do a pre-slope bed mud all the way to the drain right under the edge then install shower liner, and then pea gravel to cover weep holes, then another bed mud ontop of the shower liner before tiling? Isn't this the plumbing code in Virginia?

My contractor installed the drain base directly flat onto the wood subfloor, then he did the pre-slope bed mud all the way to the drain but on top of the base instead of under the edge. Then installed shower liner then the second bed mud. I can send a diagram and picture of what he did but I can't post picture here. He bought it from homedepot, Model# 423112
Attached Images
 
__________________
DD
danhcdo is offline   Reply With Quote
Sponsored Links
Old 11-16-2018, 11:14 AM   #2
cx
Da Home Builder
 
cx's Avatar
 
Join Date: Jul 2001
Location: Boerne, Texas
Posts: 86,554
Welcome, DD.

There is really no specific requirement for material or method in constructing a pre-slope for a traditional shower receptor. It is part of the plumbing code that you have such a pre-slope of a minimum 1/4" per horizontal foot, but how you achieve that is left up to the plumber (who may never have read that section and doesn't even know the pre-slope is required). I can't tell what material might have been used to create your pre-slope, but over a wood framed subfloor the tile industry generally calls for deck mud, which it the more common material to be used, to be at least 3/4" thick. The tile industry does not, however, have any specification for a shower pre-slope except that there be one.

We (TYW) generally recommend you set the drain such that a proper mud pre-slope can be formed with a minimum of 3/4" thickness at the drain. And the floor should be covered with a cleavage membrane (roofing felt, polyethylene sheeting, etc.) and 2.5 pound expanded metal lath before placing the mud pre-slope.

I know of no material with which I would be comfortable making a pre-slope such as you show in your photo, but I don't know what was used. Not can I tell that the slope meets the minimum slope requirement to the farthest corner of your shower footprint.

My opinion; worth price charged.
__________________
CX

Y'ALL NEW VISITORS READ THIS HERE!
cx is online now   Reply With Quote
Old 11-17-2018, 02:39 PM   #3
John Bridge
Mudmeister
 
Join Date: Mar 2001
Location: Houston, Texas
Posts: 67,297
Send a message via AIM to John Bridge
Hi DD,

I can't tell what's going on there, but it looks like his pre-slope hits the top of the drain flange, which would be correct if the pitch is correct. I don't know of any requirement for a particular thickness at the drain. So it looks to me like what you have will work.
John Bridge is offline   Reply With Quote
Old 11-18-2018, 06:20 AM   #4
Joe-Tile
Registered User
 
Join Date: Aug 2017
Location: Florida
Posts: 97
The fact that the membrane doesn't have to go over the lip of the drain to remove water is good. Water doesn't like to travel up. So if the base and pre slope are flush that's ok.
__________________
Joe
3rd generation Owner of Joe Tile
Quality tile installation since 1948.
Joe-Tile is offline   Reply With Quote
Old 11-26-2018, 12:47 PM   #5
danhcdo
Registered User
 
Join Date: Nov 2018
Posts: 2
Bathroom waterproofing

Hello

I live in Fairfax County, VA. The tileman installed the cement boards for the bathtub and shower without using galvanize joint tape and water proofing the cement boards and joint areas. He only installed the cement board (hardiebacker in this case- He said FFX county approved it) onto the wood stud and set tiles right away.

Is there such a code require them to do some kind of water proofing membrane? Is it a must or the tile man is wrong? Thank you
__________________
DD
danhcdo is offline   Reply With Quote
Old 11-26-2018, 02:58 PM   #6
john619
Registered User
 
Join Date: Oct 2014
Location: San Diego, CA
Posts: 124
DD, at a minimum you will want a waterproof membrane, visqueen or similar behind the backer board. I think the taping of joints is a requirement of the backer board manufacturer as well. If a surface applied membrane is being used over the backer board it needs to be taped for sure.
__________________
john
john619 is offline   Reply With Quote
Old 11-26-2018, 03:11 PM   #7
rmckee84
Moderator
 
rmckee84's Avatar
 
Join Date: Feb 2012
Location: Southern Illinois
Posts: 2,803
Code or not, manufacturers directions need to be followed at a minimum in your case which includes a moisture barrier of appropriate thickness, proper fasteners installed on suggested spacing, and corners/seams must be taped using alkali restistant mesh tape. Those are the bare minimum, without those 3 aspects you have failed prep and a handyman posing as a tile installer.
__________________
Jack of most trades, master of none...
Ryan McKee
McKee Construction & Custom Tile
rmckee84 is offline   Reply With Quote
Reply

Stonetooling.com   Tile-Assn.com   National Gypsum Permabase


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bathroom remodel - waterproofing overkill?? amandaIN Tile Forum/Advice Board 0 02-07-2013 10:36 AM
Bathroom Renovation waterproofing A2theK2 Tile Forum/Advice Board 7 10-09-2009 11:10 PM
Waterproofing Bathroom Floor novice9 Tile Forum/Advice Board 25 09-30-2009 06:36 AM
bathroom floor waterproofing? DanMc Tile Forum/Advice Board 8 11-12-2006 05:59 PM
Bathroom tile waterproofing targus Tile Forum/Advice Board 4 08-03-2006 07:00 PM


All times are GMT -6. The time now is 07:17 PM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC