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
Unread 05-11-2018, 09:51 PM   #1
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
Six years later/Bathroom #2

I would like to thank all in advance for any contributions.Everyone here was very helpful with my last bathroom 6 years ago.

Thankfully still planning, I have a few questions. The tile "She who must be obeyed" selected is 5/16"x6"x36 porcelain. I have read and understand the 30% rule when laying this non-rectified long tile.

The floor I have to match in height is 3/4" plank with 5/8 T&G plywood with 5/8" engineered hardwood over that. SO, I have 1 1/4" to play with over the 3/4" planks in the stripped bathroom. The SLA will be 720 after floor reinforcement.

The wife also desires heated floors.

My thoughts are 1/4" cement board screwed down on 6" centers, tape and mud seams, then red guard and primer. Install the heating wire, then pour SLC up to "X" height, then modified mortar and the 5/16" tile.

Oh gurus of the tile world, please tell this old retired electrician what YOU would do. I used slc in my last project, and like the idea of embedding the wire to protect it, and enable a re-tile later if needed.
__________________
Jeff, Retired electrician
big2bird is offline   Reply With Quote
Sponsored Links
Unread 05-12-2018, 01:45 AM   #2
Davy
Moderator -- Mud Man
 
Davy's Avatar
 
Join Date: Jan 2003
Location: Princeton,Tx.- Dallas area
Posts: 33,527
Hi Jeff, welcome back. I never plan an install so the tearout will be easier and embedding the wires in SLC doesn't guarantee an easy tearout for later. Myself, I would look into using Ditra Heat and avoid the SLC.
__________________
Davy

www.davystephenstile.com
Davy is offline   Reply With Quote
Unread 05-12-2018, 06:17 PM   #3
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
Okay, the engineer swung by today. To attain the lowest deflection, we are adding a beam to lower the 2x6" 16" oC joists to 5' span. He wants all the plank flooring removed, and 2 layers of T&G 58" plywood installed.

So I ask, is heating cable (Warm wire), okay directly on plywood? I would then pour slc up to match existing finish. Do I need plastic mesh in that stuff?
__________________
Jeff, Retired electrician
big2bird is offline   Reply With Quote
Unread 05-12-2018, 06:33 PM   #4
jadnashua
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

 
Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,504
One of the things to consider...when you're dealing with a heated floor, the amount and rate of thermal expansion is much greater than in a 'normal' tiled floor. I'd really consider something like DitraHeat to aid with that condition.

While you can use 5/8", to get something that will hold a screw for the second sheet better, condsider using 3/4" for the first layer and 1/2" for the second...the screws will bite better with less chance of tear out.
__________________
Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
jadnashua is online now   Reply With Quote
Unread 05-12-2018, 06:42 PM   #5
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
Is ditra heat a system I can use my purchased heating cable in?

I understand about the screw jacking tip.
__________________
Jeff, Retired electrician
big2bird is offline   Reply With Quote
Unread 05-12-2018, 06:50 PM   #6
Kman
Moderator
 
Kman's Avatar
 
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 11,970
Ditra Heat is a system, although you can buy parts of it individually. I don't know if Warm Wire can be used over their mat, but you can check with their tech support.

There's also a thread in the pro hangout about Ditra Heat, and I think some installers showed where they had use other brands of wire with the Ditra Heat mat.
__________________
Kevin

The top ten reasons to procrastinate:

1.
Kman is online now   Reply With Quote
Unread 05-12-2018, 06:52 PM   #7
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
I'll check that out. Now I looked at the specs, and the one I looked at was for over concrete or concrete board only. Is there more than one type?
__________________
Jeff, Retired electrician
big2bird is offline   Reply With Quote
Unread 05-12-2018, 08:48 PM   #8
jadnashua
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

 
Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,504
DitraHeat certainly can be installed over a wooden subfloor (ply or osb). https://resources.schluter.com/media...ationGuide.pdf

Whether the heating wire you have will snap in well, not sure...You'd need to check the OD of the wire.
__________________
Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
jadnashua is online now   Reply With Quote
Unread 05-13-2018, 07:00 AM   #9
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
Okay. 3/4" plywood over joists. 1/2" plywood over that. Ditra heat over that, then lay the tile to FF. Got it. Thank you very much.
__________________
Jeff, Retired electrician
big2bird is offline   Reply With Quote
Unread 05-13-2018, 08:37 AM   #10
andre.g1
Registered User
 
Join Date: Oct 2017
Posts: 18
Don’t bother priming after red guard. Look into Ditra Heat as an option.


Andre
Valleyview, AB., Canada
__________________
Andre

Last edited by cx; 05-13-2018 at 11:00 AM.
andre.g1 is offline   Reply With Quote
Unread 05-14-2018, 06:56 AM   #11
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
Smile

I found a cut sheet from Warm Wire showing their cable in Ditra Heat membrane. So, I'm good to go.
__________________
Jeff, Retired electrician
big2bird is offline   Reply With Quote
Unread 05-17-2018, 10:26 PM   #12
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
Question. I need to lay detra heat-TB , 5/16" tile and thin set to attain 3/4" ff.
Is that reasonable? I am not sure what the compressed height of thin set is. I believe Detra heat is 1/4" and TB is 5/16".
__________________
Jeff, Retired electrician
big2bird is offline   Reply With Quote
Unread 05-19-2018, 08:33 AM   #13
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
Talking

I guess a test board will tell.
__________________
Jeff, Retired electrician
big2bird is offline   Reply With Quote
Unread 05-19-2018, 10:47 AM   #14
cx
Moderator emeritus
 
cx's Avatar
 
Join Date: Jul 2001
Location: Boerne, Texas
Posts: 93,633
Always the best approach if you think the measurement will be critical, Jeff.
__________________
CX

Y'ALL NEW VISITORS READ THIS HERE!
cx is offline   Reply With Quote
Unread 07-31-2018, 10:41 PM   #15
big2bird
Registered User
 
Join Date: Sep 2012
Location: Anaheim,Ca.
Posts: 108
Ditra Heat

Getting ready to install Ditra Heat and Warm Wire in a bathroom.
Are their any pros and cons about embedding the cable with unmodified thin set mortar
the day before laying tile? Thinking filling it to the top of the cones and floating off to give a normal level surface and protect the cable.
__________________
Jeff, Retired electrician
big2bird 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
10 years in the making bathroom remodel Gozo Tile Forum/Advice Board 154 01-28-2021 07:34 PM
D-Day 70 years ago Peerless Tile The Mud Box 6 06-06-2014 05:54 PM
What are you Doing New Years Eve? kate42 The Mud Box 41 01-01-2008 05:52 PM
40 Years Derek & Jacqui The Mud Box 7 03-29-2004 08:41 AM
911 Two Years later... fishinfarmgirl The Mud Box 16 09-12-2003 10:01 PM


All times are GMT -6. The time now is 05:13 PM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC