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 01-12-2021, 03:13 PM   #1
stephster02
Registered User
 
Join Date: Jan 2021
Posts: 2
Subfloor for tile

We are remodeling our kitchen. Removed old ceramic tile and 1/4 inch OSB with it. We are left with 1/2 subfloor with 5/8 inch plywood ontop of it, so a total of 1 1/8. We are looking to tile with 6x24" tiles using large tile mortar. There will be a transition to hardwood, so the level is already going to be higher which we want to keep as minimal as possible. Is what we have enough for subfloor or do we need to add back 1/4 plywood? I have also heard of ditra but not exactly sure...we also would like to keep costs down and I know that can be expensive. We just don't want to tile and have them crack. Recommendations? Are we good or do we need something else? Thank you!
__________________
Stephanie
stephster02 is offline   Reply With Quote
Sponsored Links
Unread 01-12-2021, 04:53 PM   #2
ss3964spd
Moderator
 
ss3964spd's Avatar
 
Join Date: Jul 2005
Location: Fairfax, Va
Posts: 3,840
Send a message via Yahoo to ss3964spd
Welcome, Stephanie,

Are you certain the first layer of subfloor is 1/2"? If it is, it's not tongue and groove. Do you know if it is plywood or OSB? And the 2nd layer, certain it's 5/8" ? Is it T&G? Plywood or OSB?

Over and above that....well, under and below that, do you know what the joist structure is;? Are they 2X8's, 2X10's, something else? How about the unsupported span of those joists, as well as the spacing of those joists?
__________________
Dan
---------------------------------------------------------------------------------
If I recall correctly my memory is excellent, but my ability to access it is intermittent.

Last edited by ss3964spd; 01-12-2021 at 05:29 PM. Reason: edited to include joist spacing
ss3964spd is offline   Reply With Quote
Unread 01-12-2021, 05:28 PM   #3
cx
Moderator emeritus
 
cx's Avatar
 
Join Date: Jul 2001
Location: Boerne, Texas
Posts: 91,947
Welcome, Stephanie.

In addition to Dan's questions I'll add the spacing of the joists?
__________________
CX

Y'ALL NEW VISITORS READ THIS HERE!
cx is offline   Reply With Quote
Unread 01-12-2021, 05:39 PM   #4
stephster02
Registered User
 
Join Date: Jan 2021
Posts: 2
Hi all! I know for a fact those are the thicknesses as we had to replace other pieces of subfloor. They are both plywood, but I don't know if they are tounge and groove, but I don't believe so. The joist are 2x8's I believe spaced 16" apart with a span of about 11 feet.
__________________
Stephanie
stephster02 is offline   Reply With Quote
Unread 01-12-2021, 06:08 PM   #5
cx
Moderator emeritus
 
cx's Avatar
 
Join Date: Jul 2001
Location: Boerne, Texas
Posts: 91,947
Entirely up to you what you tile over, Stephanie, but Dan asked for clarification of that first layer of subflooring because it is deficient, not meeting tile industry standards nor even likely your building code. We know it does not have T&G edges because you'll not find center-matched edges on engineered wood of that thickness. Essentially, that layer simply doesn't count at all, but is in the way.

The quarter-inch plywood your tile was attached to may, or may not be of a type specifically intended as a ceramic tile underlayment. If it's just an exterior glue plywood, that's also a problem. But if your previous tile installation survived, it all apparently worked one time. I would absolutely not recommend you try to make it work again, but that's entirely up to you.

Your joist structure, as described, is deficient also unless you can determine that the joists are of a very good species, grade, and condition of lumber.

My opinion; worth price charged.
__________________
CX

Y'ALL NEW VISITORS READ THIS HERE!
cx 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
Replaced subfloor need help with tile. Been 10 years since i've touched a tile projec nickelhorse221 Tile Forum/Advice Board 8 08-29-2011 11:19 AM
Subfloor Prep - Additional Subfloor Over Original 1x8's Toph Tile Forum/Advice Board 5 03-31-2011 07:56 PM
T&G 2x6 subfloor rot repair, subfloor then tile? wjw1961 Tile Forum/Advice Board 1 01-22-2007 07:35 PM
subfloor for tile satyr64 Tile Forum/Advice Board 3 01-18-2007 10:57 AM
New tile, old subfloor pgabriel Tile Forum/Advice Board 1 01-03-2006 11:08 AM


All times are GMT -6. The time now is 06:38 AM.


Sponsors

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