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 02-05-2015, 10:53 PM   #1
Brian's Flooring
Registered User
 
Join Date: Feb 2015
Posts: 1
metal studs in commercial bath remodel

Hi everyone,

I am new to this forum and am seeking advice. I am bidding on a commercial bath remodel where the client has selected a large format 12"x24" porcelain tile for both the walls and floor. During my initial jobsite investigation I have determined the steel studs underneath the current drywall are 20 gauge and 24 inches on center. The walls are 15' high, with a suspended ceiling capping the planned tile height at 9'. When I climbed up into the void space above the suspended ceiling I found a plywood decking has been installed above the bathrooms supporting the building's hvac systems...so with that much dead load above I am inclined to consider these to be load-bearing walls. The wall tile coverage will be approximately 1,200 sq ft with the longest walls being 22 foot in length

I am concerned with deflection on my tiled walls and load bearing capacity of these walls, so I began a little BASIC research about the spacing on the studs. TCNA and CTIOA references I have been able to find online indicate a metal stud spacing of 16" o.c. is recommended/preferred with a large format tile. I also found recommendations for medium bed mortar applications with LFT. I found two different recommendations to ensure the studs would not surpass the alowable "bow" within tolerances to meet deflection of L/360.

So, to wrap up this post... I am seeking advice on the following:

Assuming the studs will meet the tolerances for deflection, would I be safe in using 1/2" Denshield as a backer on the walls?

Any recommendations for thinsets on this application? I have to be honest, I haven't worked with medium bed mortars...having relied in the past on modified thinsets from various manufacturers.

I am tempted to pull in someone with more experience than I in these structural matters. I don't want my tile to come tumbling down in 6 months.

Thank you in advance for helping a guy out who seems to know just enough to be dangerous on a jobsite.
__________________
Brian
Brian's Flooring is offline   Reply With Quote
Sponsored Links
Unread 02-06-2015, 12:30 AM   #2
Brad Denny
Tile Contractor Nashville, TN
 
Brad Denny's Avatar
 
Join Date: Mar 2007
Location: Joelton, TN
Posts: 4,163
Brian, Welcome.
Typically, there should be a line of communication in place for you to make a "Request For Information" (RFI) through your contact with the general contractor you are bidding with. Depending on the size of the project, be it an architect or designer, they should be the one to make the call on this issue. Bring it to their attention that you see a discrepancy between what is there and what is needed. If they are unwilling to take proper steps to rectify, remember that any design changes to the structure you make you are responsible for, so make sure you're right. I like for others to make those calls.
__________________
Brad


Brad Denny 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 Remodel - Metal Studs and other questions Jeremy_M Tile Forum/Advice Board 10 09-17-2008 10:48 PM
Metal studs and showers? duneslider Professionals' Hangout 9 08-15-2007 07:45 PM
Kerdi over wallboard over metal studs...? ccarlisle Tile Forum/Advice Board 3 08-07-2007 04:46 PM
cbu on metal studs 1Eric Professionals' Hangout 14 03-07-2006 06:38 PM


All times are GMT -6. The time now is 09:14 PM.


Sponsors

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