Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Flooring

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-12-2011, 07:56 PM   #1
Member
 
Join Date: Jul 2009
Posts: 58
Rewards Points: 75
Default

Basement bathroom floor


About to finish basement, saving best for last...1/2 bathroom. I installed Platon's plastic sub-floor system http://www.certainteed.com/resources/FND_Platon-Flooring-Protector-Brochure_40-96-02C%20.pdf below OSB subfloor to raise off cold concrete, I hired out the carpet installation. Deciding what to do in bathroom. I want tile in bathroom and I want to raise off cold concrete also but Platon literature doesn't say tile as choice of flooring. I noticed in some areas with carpet that subfloor creeks a little meaning anchors I possibly installed improperly (spun in hole) or didn't fasten with enough. Are there any concerns with this product in bathroom as long as I intall 3/4 inch OSB fastened with lots of Tapcon anchors. I don't want the floor "moving" since it will lead to cracked grout and/or tile. Also, can I mortar directly over OSB? It's a 1/2 bath so shouldn't have excessive moisture so is cement board even necessary? Will wet mortar cause issues with OSB? Thank you in advance for your help.

8roty is offline   Reply With Quote
Old 09-12-2011, 08:13 PM   #2
DIY staff

 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 22,135
Rewards Points: 2,912
Default

Basement bathroom floor


Tile should never be attached to OSB --also no wood should ever be attached directly to a concrete floor

The moisture will cause failure---

However setting tile directly on a concrete floor is the ideal surface.

__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is online now   Reply With Quote
Old 09-12-2011, 08:31 PM   #3
Member
 
Join Date: Jul 2009
Posts: 58
Rewards Points: 75
Default

Basement bathroom floor


Thanks for the reply. I installed the Platon underlaymet to raise OSB off concrete. I was hoping to also install in bathroom. Tile directly on concrete = cold tile = cold toes.
8roty is offline   Reply With Quote
Old 09-12-2011, 08:36 PM   #4
DIY staff

 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 22,135
Rewards Points: 2,912
Default

Basement bathroom floor


Tile failure will hurt toes---Better cold toes than the alternative.
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is online now   Reply With Quote
Old 09-12-2011, 08:36 PM   #5
Member
 
Join Date: Jul 2009
Posts: 58
Rewards Points: 75
Default

Basement bathroom floor


Thanks for the reply. I'll plan on 1/4 inch cement board over OSB if I decide to use Platon underlayment. Are there any acceptable wood subfloors for mortar application?
8roty is offline   Reply With Quote
Old 09-12-2011, 08:57 PM   #6
DIY staff

 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 22,135
Rewards Points: 2,912
Default

Basement bathroom floor


Cork--comes in rolls and can be laid on top of the concrete and under the tile---

used in concrete apartment buildings for sound control between floors.
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is online now   Reply With Quote
Old 09-12-2011, 08:59 PM   #7
DIY staff

 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 22,135
Rewards Points: 2,912
Default

Basement bathroom floor


Wood is a bad choice under tile as wood expands and contracts at a different rate than tile--
That's why the 1/4" backer board or Ditra is used,
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is online now   Reply With Quote
Old 09-12-2011, 09:00 PM   #8
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 10,410
Rewards Points: 2,468
Default

Basement bathroom floor


Can ceramic tiles be installed over a platon upgrade? If it is an upgrade.
Bud Cline is offline   Reply With Quote
Old 09-13-2011, 12:39 AM   #9
Member
 
Join Date: Jul 2009
Posts: 58
Rewards Points: 75
Default

Basement bathroom floor


I am considering the Ditra underlayment instead of the 1/4inch backerboard. Instructions on FlexBond mortar I purchased says do not bond directly to OSB panels. Ditra installation calls for thin-set mortar to bond the underside of the Ditra underlayment, one substrate option being OSB. Is there a specific mortar that is acceptable for OSB bonding?
8roty is offline   Reply With Quote
Old 09-13-2011, 11:25 AM   #10
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 10,410
Rewards Points: 2,468
Default

Basement bathroom floor


Quote:
Instructions on FlexBond mortar I purchased says do not bond directly to OSB panels.
That statement is referring to bonding tiles directly to OSB. Underlayments are a different story.

Schluter Systems (DITRA) is in bed with a thinset manufacturer and they have developed a product called "DITRA Set" which is now their recommendation for use with DITRA but it is not necessary. And DITRA Set may not be suitable for use with OSB. The Schluter website has all of the instructions there.

Any modified thinset can be used to bond DITRA to OSB, it is done every day.


Last edited by Bud Cline; 09-13-2011 at 11:29 AM.
Bud Cline is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cutting out a concrete basement floor jeffhoward001 Building & Construction 21 01-17-2012 09:51 PM
Roughed In Bathroom - Basement mchughsy Plumbing 2 04-24-2011 11:40 PM
Finishing a cement basement floor with carpet and tile - no subfloor? vseven Flooring 2 09-21-2010 10:41 AM
New drains under the basement floor, guidance needed mason Plumbing 6 01-10-2009 05:58 PM
Carpet in the basement Packer Backer Flooring 16 11-04-2008 12:19 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.