Is this grout, if so, how do i fix this, any suggestions

Slpoolowner

Well-known member
Jul 5, 2018
56
Sugar Land/Texas
Got into the pool this afternoon and saw these little specs sitting on the bench below the spillover from the spa; i presume this is grout, but wanted to check in and get your thoughts? If so, any suggestions on what i should use to repair this, and any first hand experiences with a how-to or maybe a youtube video?

Here are the pics of what i saw, and where i think it came from.

First pic are the white little specs i found on the bench below my spillover from the spa to the pool; the second pic is the actual spillover, where i suspect where the grout, came from (?), i'm guessing its grout?
 

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Slpoolowner

Well-known member
Jul 5, 2018
56
Sugar Land/Texas
I keep my pool chemistry quite consistent, and follow what the poolmath tells me to do. Can anyone tell me what this is, first time seeing it, is this calcium deposits? If so, how do i get rid of it? I'm referring to the white stuff going down to the tile line...i've never seen this before.IMG_5057.jpg
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,857
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Yeah, your grout is cracking and being worn by the water running over it. It is the same way water made the Grand Canyon.

Use a grout saw to remove the grout and apply new grout to the gaps. I use....

 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,857
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
I keep my pool chemistry quite consistent, and follow what the poolmath tells me to do. Can anyone tell me what this is, first time seeing it, is this calcium deposits? If so, how do i get rid of it? I'm referring to the white stuff going down to the tile line...i've never seen this before.View attachment 328834

It is water line scale caused by evaporation leaving the calcium on the stone.

You can try removing it with very diluted muriatic acid solution, about 5:1. Be caerful that the acid solution does not damage your stone or grout.

 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,857
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
No, the grout is put in after the stone is placed.

You need to mix the grout at the right consistency for it to flow into the joint.
 

Bperry

Gold Supporter
Aug 20, 2020
1,071
Knoxville, TN
Pool Size
27000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-60
In looking at this in more detail, i have no clue how to get the grout all the way in there; do you think i need a stone mason to maybe remove some of the stone to regrout?
Use a rubber grout trowel. Just press it into the gap going over it multiple times. Then as it dries, use a lightly damp sponge to remove excess grout from the face of the tiles.
 
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