Grout cracking in shower - best way to repair?

[Stephen W. Stanczyk]

Corners should not be grouted at all. Use caulk at all corners and transitions like between the tub or shower and the tile wall. You can use regular caulking and match by color or if the gap between tiles is greater than 1/8 inch, use the sanded caulking.

The big box stores keep the specialized caulk in the tile department, not in the painting section. They carry a variety of colors of both regular and sanded caulk.

The best site for tile information is www.johnbridge.com

[Christopher Currins]

Originally Posted by Lynn Quo

I have the same exact problem as Jim on a shower in a new construction home that I have lived in for 7 months.

Are you saying that after regrouting that corner, that a 100% silicone caulk should be applied afterwards?

Don't re-grout. Clean out the corner joint and Use what Tim recommended.

I've used similar (different brand) many times, works and looks good. It's flexible caulk (stays soft) that looks like grout, like Marcel said, you can color match with existing grout.


http://www.mapei.it/public/US/produc...S&U_TDS_EA.pdf


And what Steve explained while I was typing.

[Marcel R. Cyr]

http://floorelf.com/caulk-or-grout-in-corners

[Stephen W. Stanczyk]

OK Marcel......

Caulk or grout?

[Marcel R. Cyr]

I'd say better left alone, looks just great the way it is.
But might want to monitor daily for any activity.

[William C. Chandler]

I would bet a dollar you are missing deadwood in the corner so the tile backer board is not screwed at that corner. framers miss deadwood at corners all the time and if it is not caught at punchout, well the drywaller isn't going to put it in; they don't have the wood or the desire to do it. when you tear it out next year, let me know if I'm right.