Question about grout cracking

SanibelBlue

Member
May 18, 2018
14
South Louisiana
Our pool was finished April, 2018. This summer I've noticed some cracking in the grout along the top of the waterline tile. The coping is travertine. Attached is a pic of the worst spot. There are areas where there is no cracking at all, and areas where it's barely visible. Is this something to be concerned about or that I need to fill, or just don't worry about it? Water only gets up this high if we're having a downpour that the overflow can't keep up with and I can't pump out fast enough. Which does happen occasionally. As always, thank y'all for your help!
 

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ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
10,847
Northern NJ
Patch the grout cracks. Water getting behind the tiles can eventually erode the backing and the tiles will get loose or pop off.