How to repair grout in coping?

[drimran]

Hello,
I just needed advice on what material or how to repair the broken grout in the coping tile that tile is located on the spillway from the Jacuzzi.
I am assuming this happen because of the constant water flow over this area.

Just looking on advice for how to repair this and what type of material to use.
Thank you

 

[ajw22]

I use E-Z Patch® 4 (White) Pool Tile Grout Repair - E-Z Patch The grout around my spillover develops cracks and needs a bit of patching every year.

Post pics of the problem area.

You confident that your water chemistry is good and your Calcium Saturation Index (CSI) - Trouble Free Pool is between 0 and -0.3?

 

[drimran]

Thank you for the reply, chemistry is good
Here are some pictures.

 

[ajw22]

That is more than the patching problem of cracks I need to do.

Looks to me like the stones may have shifted and that is more of a crack that formed then where grout was.

@bdavis466 @MinerJason what would you use there? Epoxy grout? Mortar?

 

[drimran]

I called my pool builder and he is really nice guy he’s going to send someone to look at the tiles.
Pool was built 4 years ago.
I will keep you guys posted.

 

[bdavis466]

The stone has more than likely delaminated from the spa dam wall. Type S mortar (which was probably used) is easily and rather quickly eroded when submerged. It is a very poor choice for that application.

A pool grade thinset would be a better choice with an epoxy grout