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-   -   Expansion of porcelain tile on bathroom backerboard flr and walls? (http://www.diychatroom.com/f15/expansion-porcelain-tile-bathroom-backerboard-flr-walls-113129/)

dvarga 08-06-2011 08:49 AM

Expansion of porcelain tile on bathroom backerboard flr and walls?
 
Hi, I have a 6' x 7' bathroom that I am remodeling. I have backerboard on the flr and also going up 42" on the walls. I am about to lay porcelain tile on the backerboard flr and walls.

Question: is there an expansion issue to consider? TI was surprised to hear the guy at the hardware store who said to leave 1/4" space between the flr tile and the wall for the porcelain tile expansion. I guess the wall tile might have the same issue, leave 1/4" between the bottom of the wall tile and the flr? That kind of does not make a lot of sense, that would leave a space between the wall and flr tiles. I would want to have them butted up against each other and grouted and or sealed at that 90 degree intersection.

Thanks for any insights!

mustangmike3789 08-06-2011 09:55 AM

you should have a flexible expansion joint where two different surfaces intersect. i dont think that you will need 1/4" in a room that small 1/8" should be good.

dvarga 08-06-2011 12:24 PM

thx
 
thx, will do that..

-D

Jackofall1 08-06-2011 12:55 PM

You should not grout the connection between the wall the floor, use a siliconized acylic grout caulking, which can be purchased where you get your grout.

Mark

dvarga 08-06-2011 04:04 PM

Thx much
 
Thanks, will do that as well..

-Dave

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Ron6519 08-08-2011 10:12 PM

Quote:

Originally Posted by dvarga (Post 701498)
Hi, I have a 6' x 7' bathroom that I am remodeling. I have backerboard on the flr and also going up 42" on the walls. I am about to lay porcelain tile on the backerboard flr and walls.

Question: is there an expansion issue to consider? TI was surprised to hear the guy at the hardware store who said to leave 1/4" space between the flr tile and the wall for the porcelain tile expansion. I guess the wall tile might have the same issue, leave 1/4" between the bottom of the wall tile and the flr? That kind of does not make a lot of sense, that would leave a space between the wall and flr tiles. I would want to have them butted up against each other and grouted and or sealed at that 90 degree intersection.

Thanks for any insights!

"Porcelain tile expansion" is a nonsensical phrase. It (tile expansion) does not exist.
I'd leave an 1/8" gap at the floor and caulk it.
Before you tile the floor, tell us about the floor support and cement board attachment.


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