Subfloor Question For Tiling Project.. - Flooring - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 07-22-2011, 09:54 PM   #1
Join Date: Jul 2011
Posts: 2
Rewards Points: 10

Subfloor question for tiling project..

Hi guys,

I am tiling a bedroom soon. I have already purchased the tile, but not anything else. There is currently oak hardwood that is incredibly water damaged beyond repair, so it will all be pulled up. The subfloor beneath it is plank.
I know that I will need to lay down concrete backerboard to lay the tile on. Do I also need to lay plywood or OSB down on top of the planks first? If so, which is better? I have to assume that plywood is better, but how bad is OSB? I want to do what is best and most structurally sound, but if there isn't that much of a difference I'd rather go with what's less expensive.

Any insight would be greatly appreciated!


missamy018 is offline   Reply With Quote
Old 07-22-2011, 10:53 PM   #2
JazMan's Avatar
Join Date: Feb 2007
Location: Troy, Michigan
Posts: 4,944
Rewards Points: 3,796

Subfloor question for tiling project..

Hi Miss Amy,

After you replace the hardwood, be prepare to repair or replace some of the subfloor. Re screw every plank using floor screws, no drywall screws. Although "subfloor" grade OSB is acceptable, I recommend and underlayment grade plywood. B/C grade should be easy to find. Install it fastening it only to the planks, not to the joists too. No glue should be used. Go as thick as you can, but no thinner than 1/2". The cheap OSB non t&g we see may not be acceptable, yet you may not want to use 3/4" thick OSB which is "subfloor" grade.

Next step is the tile backer or a product such as Ditra matting. I vote for Ditra.

There's obviously much more to it than what I just wrote, but those are the basics. What experience do you have? Are you installing ceramic/porcelain or something else? Are the joists stiff enough for your tiles? How old is your home?



TILE GUY - retired- TROY, MI - Method & Product suitability consulting.

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

Thread Tools
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
Attic project - Would like opinions whataboutj Insulation 6 06-29-2011 03:07 PM
Anyone used a project manager instead of GC? pulpit Building & Construction 10 02-11-2011 10:08 AM
My project... The Cable Guy Electrical 10 01-02-2011 09:14 PM
Project adding 3-phase power to a tenant finish project bnharbor Electrical 5 11-11-2010 05:39 AM
My basement project - a 2 year project. HABSFAN2006 Project Showcase 14 07-12-2009 09:30 PM

Top of Page | View New Posts