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 05-26-2019, 12:23 AM   #1
Gec
Registered User
 
Join Date: May 2019
Posts: 5
2x4 Niche with no waterproofing

New to this forum. Just had a bathroom tiled by a professional who said the niche would be waterproof. My daughter was home and said he tiled right over the wood. Is there any way he could have waterproofed the niche with the cement he used to install the bullnose? Walls have PROVA board as waterproofing. Does the niche need to be torn out?
Attached Images
 
__________________
Gecco
Gec is offline   Reply With Quote
Sponsored Links
Unread 05-26-2019, 12:29 AM   #2
Kman
Moderator
 
Kman's Avatar
 
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 10,840
Welcome to the forum, Gecco.

If he bonded tile directly to the lumber, then it's not waterproof. There are a number of pre-formes boxes out there that are waterproof and ready to tile over, but they would be visible before the tile was set.

I guess you could just ask him what he used and see how it goes from there. Or if the shower hasn't been grouted yet, look at the grout joints and see if there is anything other than bare lumber.

If you go so far as to remove a tile, or to have him do it, prepare to compensate him for the time and effort if you find out your suspicion was incorrect. I'd try to be pretty sure I was right before taking that step.
__________________
Kevin

The top ten reasons to procrastinate:

1.
Kman is offline   Reply With Quote
Unread 05-26-2019, 12:31 AM   #3
Kman
Moderator
 
Kman's Avatar
 
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 10,840
By the way, what does that picture in your first post represent?
__________________
Kevin

The top ten reasons to procrastinate:

1.
Kman is offline   Reply With Quote
Unread 05-26-2019, 10:04 AM   #4
Tiger Mountain Tile Inc
Registered Muser
 
Tiger Mountain Tile Inc's Avatar
 
Join Date: Feb 2011
Location: Issaquah, Washington
Posts: 6,619
I think Prova board has a foam core similar to Wedi and others. If so, I think you're fine.

edit: I just reread the original post. I see Kerdi and Prova board. I guess I don't understand what "tiling right over the wood" means? I don't see any wood.
__________________
Jim Upton
DIYTileGuy
Tiger Mountain Tile Inc is offline   Reply With Quote
Unread 05-26-2019, 10:15 AM   #5
cx
Da Home Builder
 
cx's Avatar
 
Join Date: Jul 2001
Location: Boerne, Texas
Posts: 88,260
I think that's what Kevin was getting at, too, Jim. I don't see any wood, either.
__________________
CX

Y'ALL NEW VISITORS READ THIS HERE!
cx is offline   Reply With Quote
Unread 05-26-2019, 10:35 AM   #6
Gec
Registered User
 
Join Date: May 2019
Posts: 5
Picture descriptions

Hi!

Thanks for your response! The picture is what was taken before he started tiling. The walls have the Prova board and this is a picture of the niche before tiling that my daughter took. He put up the Prova and I think covered the niche in am? He started tiling about 5 minutes later so I didn’t see it myself. It looked like some kind of paper or something was put over the 2x4 outline? The problem is when I asked about it, he said it was waterproof and I didn’t need to worry but I can’t get a straight answer as to what was used. The job has been paid but I don’t want water leaking behind the niche. The wall backs onto a bedroom.
__________________
Gecco
Gec is offline   Reply With Quote
Unread 05-26-2019, 10:42 AM   #7
makethatkerdistick
Registered User
 
Join Date: Oct 2017
Location: North Texas
Posts: 816
Was the Kerdiband directly attached to the framing? if so, that's a big nono. If there's something behind it, then you're probably good.

Also, there seems to be a seam of the Prova board going through the niche? Is that just a print on the board or an actual seam? If the latter, was the seam sealed?

Last, does the bottom of the niche has a slope towards the front/drain? Put a level there and tell us. If so, then that'd be good.
__________________
Wolfgang
makethatkerdistick is offline   Reply With Quote
Unread 05-27-2019, 12:09 AM   #8
Elkski
Took the Schluter part 1 class my team won!
 
Elkski's Avatar
 
Join Date: Apr 2007
Location: Wasatch front, Utah
Posts: 774
Is this picture daughter took close to before he put tile up? So it was just a 2x4 sides of the niche (red)? So the corners are a worry(green),. The back seam ( red) he just put some caulking on it. . He didn't overlap the kerdi 2 " on the back wall or corners. Directly on wood is no good. Do you know the original width? Usually the width is 14.5" to insides of studs. If it's now like 14" then he prolly didn't even put 1/4" hardi.
Attached Images
 
__________________
Teddy
Elkski is offline   Reply With Quote
Unread 05-27-2019, 02:53 AM   #9
Kman
Moderator
 
Kman's Avatar
 
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 10,840
My guess is, he covered the lumber with Kerdi, and cut it at the junction with the Prova board, then put a bead of caulk there. That's what it looks like to me.

If I'm correct, the outside corners would be the weak points. As for the Kerdi-to-lumber issue, who knows if that'll hold or not?
__________________
Kevin

The top ten reasons to procrastinate:

1.
Kman is offline   Reply With Quote
Unread 05-27-2019, 10:30 AM   #10
Tiger Mountain Tile Inc
Registered Muser
 
Tiger Mountain Tile Inc's Avatar
 
Join Date: Feb 2011
Location: Issaquah, Washington
Posts: 6,619
This is what I see. It looks like there's 1/2 inch something on the top. I know that doesn't prove that all four sides are wrapped in backer board but I'm not sure we should be automatically suspicious that something was done wrong.

Name:  prova board img.jpg
Views: 184
Size:  29.1 KB
__________________
Jim Upton
DIYTileGuy
Tiger Mountain Tile Inc is offline   Reply With Quote
Unread 05-27-2019, 11:21 AM   #11
Carbidetooth
Hmmmmm
 
Carbidetooth's Avatar
 
Join Date: Mar 2010
Location: Boise, ID
Posts: 1,392
Prova is like Wedi, correct?

Since we're speculating, I'm advancing that Prova pookey was used to install Kerdi and that's what all that whitish stuff elsewhere is about.

For a field engineered "my way" it's better than some but certainly not in accordance with manufacturer's guidance.


As someone suggested, if that space measures something close to 14 1/2", there's a really good chance that Kerdi is stuck to studs.


We may never know...
__________________
Peter

Silicone (not silicon) Sealant Ranger
Carbidetooth is offline   Reply With Quote
Unread 05-27-2019, 02:22 PM   #12
Gec
Registered User
 
Join Date: May 2019
Posts: 5
Questions

All these responses are giving me great guidance. Thank you. The picture was taken 5-10 minutes before the tile was started. I know the 2x4 were visible when I saw it last about 30 minutes or so before this picture was taken. The dimensions of the box before tile (grout line to grout line) before the tile is 14” x 12”. The office designer is willing to come by to look so I am trying to formulate questions. Is there anything now that would tell me if it needed to be redone. Answer I keep getting is not to worry and it is waterproof.
__________________
Gecco
Gec is offline   Reply With Quote
Unread 05-27-2019, 03:33 PM   #13
Kman
Moderator
 
Kman's Avatar
 
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 10,840
The seams would be my main concern. But I don't know what was done after picture was taken, and I can't see the bottom of the niche in the picture.

As mentioned before, the slope is critical. Did you check it with a level to see if the bottom will shed water?
__________________
Kevin

The top ten reasons to procrastinate:

1.
Kman is offline   Reply With Quote
Unread 05-27-2019, 06:24 PM   #14
Tool Guy - Kg
Moderator -- Wisconsin Kitchen & Bath Remodeler
 
Tool Guy - Kg's Avatar
 
Join Date: Feb 2005
Location: Oak Creek, WI
Posts: 21,163
If you have access to, and can afford to make a little slit on the back side of that wall (a manual drywall jab saw for $5 would work well), you can accurately measure the outside width of the stud spacing at the niche...then you can do the math from your front side measurements to calculate how little or much gap there is between the studs and the tile. If the math shows that there’s only 1/16” between the tile and the studs, it makes for a pretty persuasive argument that it’s gotta be done again.

I can’t count the number of times contractors have said, “It’ll be fine” when it’s not. And the homeowner is stuck down the road shelling out more money to fix.

__________________
Tonto Goldstein... but my friends call me Bubba

Help an awesome summer camp!
Tool Guy - Kg is offline   Reply With Quote
Unread 05-27-2019, 06:54 PM   #15
tatumjonj
Registered User
 
Join Date: Nov 2012
Posts: 583
What that typically means is "it'll be fine for the next 3 weeks and then you'll never see me again."
__________________
Jon
tatumjonj 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
Shower Window niche framing n waterproofing HappyPam Tile Forum/Advice Board 6 09-20-2018 01:01 PM
Waterproofing niche dschwake Tile Forum/Advice Board 14 04-12-2016 09:47 PM
Shower Niche Insulation and Waterproofing Questions PDXNewbie Tile Forum/Advice Board 29 08-27-2015 11:57 AM
Niche Layout & Waterproofing K10BOLTS Tile Forum/Advice Board 9 12-28-2013 04:54 PM
'Waterproofing' niche PaulHG Tile Forum/Advice Board 9 05-02-2006 10:32 AM


All times are GMT -6. The time now is 03:06 AM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC