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 > Professionals' Hangout

Sponsors


Reply
Thread Tools Search this Thread
Unread 07-30-2010, 08:15 AM   #1
ssailer
Registered User
 
ssailer's Avatar
 
Join Date: Feb 2005
Location: Nashville, TN
Posts: 82
Advice for adding slope to new concrete

Going tomorrow for a second look at front porch that is roughly 8' x 30' new concrete. No slope.

Can I add slope with mud and lathe? Then Ditra,Kerdi and tile? How does the mud bond to the existing concrete? (not much exterior experience )

Thanks!
__________________
Scott
ssailer is offline   Reply With Quote
Sponsored Links
Unread 07-30-2010, 09:03 AM   #2
JC
Registered User
 
Join Date: Jul 2001
Posts: 4,030
You can bond it directly using a slurry of thinset...trowel on the runny modified thinset then place your mud into it while it is still wet. This can give you a thinner bed but the down side is that if you have cracks they can telegraph through the mud also.

Indirect mud bed uses the lath and paper, it will isolate cracks somewhat better but needs to be much thicker.

use whatever method is more appropriate for the project.

What ever you do make sure you use a membrane over the entire surface and have it waterproof..if ditra use the kerdi band and seal edges.

reason is water can filter through the tile/grout and just lay where the old concrete is not sloped possibly creating an efflorescence problem later on...
JC is offline   Reply With Quote
Unread 07-30-2010, 12:30 PM   #3
custombuilt
Tile and remodeling contractor
 
Join Date: Jan 2007
Location: Quincy, IL
Posts: 2,794
Yep, what JC said.
__________________
---------------------------------------------------
Jason W.

Superior Construction
Custom Interior and Exterior remodeling experts
Quincy, IL
custombuilt is offline   Reply With Quote
Unread 07-30-2010, 01:14 PM   #4
Higher Standard Tile
Tile and Stone Contractor
 
Higher Standard Tile's Avatar
 
Join Date: Feb 2003
Location: Maui
Posts: 3,641
I agree. Go with direct bonded mud covered with a waterproof membrane.

Use a really high quality polymer modified thinset for the install. Unless you are going over Ditra then use a high quality unmodified thinset per Schluter instructions.

Make sure the tile is rated for exterior use in freezing climate. And movement joints for exterior are supposed to be every 8'-12'. You can leave out the grout every so often and use Laticrete Latisil for the the movement joints. 100% silicone that matches Laticrete's grout colors.
__________________
Isaac

Higher Standard Tile & Stone
Maui, Hawaii
CTEF Certified Tile Installer #673


Maui Professional Tile & Stone Installation
Higher Standard Tile is offline   Reply With Quote
Unread 07-30-2010, 01:36 PM   #5
ssailer
Registered User
 
ssailer's Avatar
 
Join Date: Feb 2005
Location: Nashville, TN
Posts: 82
Thanks guys...nice when all agree .

Isaac, great idea on the expansion joints. Do I need them at the perimeter?
__________________
Scott
ssailer is offline   Reply With Quote
Unread 07-30-2010, 01:55 PM   #6
Higher Standard Tile
Tile and Stone Contractor
 
Higher Standard Tile's Avatar
 
Join Date: Feb 2003
Location: Maui
Posts: 3,641
Scott,

Yes I would put them wherever the tile buts up to structure too.

If you don't feel like caulking you can get some nice premade expansion joints from Schluter that you install with thinset while you set the tile. They make them for the field and for perimeter joints.
__________________
Isaac

Higher Standard Tile & Stone
Maui, Hawaii
CTEF Certified Tile Installer #673


Maui Professional Tile & Stone Installation
Higher Standard Tile 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
Pre slope on concrete floor oldmacbride Tile Forum/Advice Board 6 05-27-2008 08:14 PM
Advice on adding stone facade to front of house 67stang Tile Forum/Advice Board 2 02-21-2008 02:37 PM
Adding a shower from scratch on a concrete slab gpr1 Tile Forum/Advice Board 3 04-01-2006 06:42 PM
Adding concrete to walls ajunrein Tile Forum/Advice Board 69 03-26-2006 04:38 PM
Adding a shower drain to a concrete floor skinz Tile Forum/Advice Board 3 11-12-2004 03:27 PM


All times are GMT -6. The time now is 08:52 AM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC