With a big fat grout joint like that, after you clean off the old caulking I would just re caulk to fill in where is has cracked. It will not crack in a new place so it is not necessary to overlay the whole grout joint, which WILL fail due to hydrostatic pressure and the fact that grout does not breathe. Grout is for filling voids. 

Sent from my iPhone

On 25 Mar 2014, at 8:10 am, Lorne Greenberg <lorne@fabracleen.com> wrote:

John is correct.  They old grout there must be completely removed.  If you see any moisture behind it or if water actually begins to drain out after you remove the grout, then it needs to also be dried. I usually set up fans and/or a dehumidifier if you have access to one.  If you can the find out what grout brand and color they used you can get a matching latex based siliconized caulk by the same company and that way the look will remain the same.

Lorne Greenberg
 
Fabra-Cleen
"Getting all the dirt since 1949"
lorne@fabracleen.com
www.fabracleen.com
212-777-4040, 718-776-3564
516-377-0993

On Mar 24, 2014 5:41 PM, "John Freitag" <jfreitag@thestoneandtileschool.com> wrote:

Caulking will be the best to use, grout will crack out and fail fairly quickly.

All the old materials must be removed, then the surface need to be totally cleaned , if there is moisture behind or under the floor it need to be dry . then caulk it.

If the surface is not dry and clean the caulk will fail also.

 

 

John E Freitag

Director

The Stone & Tile School

Office 407-567-7652

Cell 407-615-0134

jfreitag@thestoneandtileschool.com

 

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www.thestoneandtileschool.com

 

 

 

From: Stuart Young [mailto:santafefc@sbcglobal.net]
Sent: Monday, March 24, 2014 5:18 PM
To: Stone and Tile PROS Technical Support
Subject: [sccpartners] Caulking shower corners

 

Hi, partners,

 

The attached are photos of a shower floor joint where it joins the wall.  It appears that the caulk is coming loose in the corners. What is the best way to remedy this problem, and to keep water from penetrating in these areas?  Grout, caulk, both? Any methods or products that do better than others?

 

Thank you,

 

Stuart Young

Santa Fe Floor Care

 

 

 

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