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 09-03-2010, 06:55 PM   #1
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Default

subfloor for bathroom


I am putting in a new subfloor in my bathroom and have some questions concerning underlayment depth/type. I have 1 by 6 fir planks diagonally on the joists to start. I am planning to do tile on top. Do I need 3/4 plywood plus 1/4 cement board, or because of the 1 by 6, can I use 1/2 plywood with 1/4 cement board as support for tiles? I understand people usually suggest 3/4 ply when it is directly on the joists for good support. The joists are 16 on center.
Is there another combination which is better in my situation? If I use 3/4 ply and cement board I am getting a bit high as it butts up to a-joining floor at doorway. Would also like to know if exterior grade or construction grade plywood is the best for the project.
I appreciate any input. Thanks

philmore is offline   Reply With Quote
Old 09-03-2010, 08:14 PM   #2
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 4,071
Rewards Points: 2,000
Default

subfloor for bathroom


Hi Philmore,

Half inch underlayment grade plywood C/C or better, ext. glued plies is the least I recommend, go thicker if possible, it's better. Remember bathroom floors are usually higher than the hall, plus you may want to use a marble threshold in the doorway.

To save a bit you can use Ditra membrane (1/8" total), instead of 1/4" (5/16" installed with the thin set under), backer board.

If you're installing ceramic /porcelain, standard joists configuration should be fine. If stone tiles, you may need to take additional steps.

Jaz

__________________
Tile 4 You LLC Troy, MI

DITRA Installs - KERDI Watertight-Mold-Free Showers. I have NEVER made a mistake, I thought I did ONCE, but, I was WRONG! A+ BBB rating - est. 1987 - over 50 yrs. exp.
JazMan is offline   Reply With Quote
The Following User Says Thank You to JazMan For This Useful Post:
philmore (09-04-2010)
Old 09-04-2010, 09:26 AM   #3
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Default

subfloor for bathroom


JazMan,

Thanks for your info, I appreciate it.
I was going to put smaller tiles which come with the mesh backing. Does the Ditra work well with the smaller tile size?

-philmore
philmore is offline   Reply With Quote
Old 09-04-2010, 10:06 AM   #4
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 4,071
Rewards Points: 2,000
Default

subfloor for bathroom


You can install any tile that is at least 2"x2" over Ditra. Do you like to looks of mosaics or do you think sheet mounted tiles are easier?

Jaz
__________________
Tile 4 You LLC Troy, MI

DITRA Installs - KERDI Watertight-Mold-Free Showers. I have NEVER made a mistake, I thought I did ONCE, but, I was WRONG! A+ BBB rating - est. 1987 - over 50 yrs. exp.
JazMan is offline   Reply With Quote
Old 09-11-2010, 08:03 AM   #5
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Smile

subfloor for bathroom


Hi Jaz man,

Sorry I have been working at my other job lately and not gotten back.
I do like the mosaics I have seen so I may go with that. This Ditra sounds
great. I am looking forward to working with it.
Thanks again.
-Philmore
philmore is offline   Reply With Quote
Old 09-17-2010, 08:07 PM   #6
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Default

subfloor for bathroom


I had a question concerning the ABS pipe and the toilet flange height.
At this time if I connect the toilet flange to ABS pipe coming up from floor it will be about even with the tile height. Should the flange be flush with the tile or on top of the tile?
What are the possible things to do to remedy this if it is not correct?
Appreciate it.
-Philmore
philmore is offline   Reply With Quote
Old 09-17-2010, 08:54 PM   #7
Tileguy
 
JazMan's Avatar
 
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 4,071
Rewards Points: 2,000
Default

subfloor for bathroom


Ideally the flange should be on the tiles, but flush with or even a little lower will work too. You just adjust with a thicker or even two wax rings.

Jaz
__________________
Tile 4 You LLC Troy, MI

DITRA Installs - KERDI Watertight-Mold-Free Showers. I have NEVER made a mistake, I thought I did ONCE, but, I was WRONG! A+ BBB rating - est. 1987 - over 50 yrs. exp.
JazMan is offline   Reply With Quote
The Following User Says Thank You to JazMan For This Useful Post:
philmore (09-18-2010)
Old 09-18-2010, 09:00 AM   #8
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Default

subfloor for bathroom


JazMan

That is a relief to know.
Thanks once again.
-Philmore

philmore 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





Top of Page | View New Posts

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