Thick white stuff coming out of gunite shell

Liz315

Bronze Supporter
Jul 12, 2020
128
Hammonton, NJ
Pool Size
15000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
So it has been snowing a lot and it just melted today and the shell of our gunite has white stuff coming out of walls of the shell everywhere but mostly at top and stairs.

I tried looking it up and is it calcium carbonate leaching in gunite shell? Efflorescence? Are they the same thing? Will it be ok? They are supposed to do the waterline tile and coping soon.
Thanks for any advice.
Liz
 

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Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
20,958
Bedford, TX
Liz,

I suspect the gunite guys added calcium to get the gunite to set up in low temps.. That said, let's see if we can get some of our other members to chime in.. Calling @jimmythegreek

Thanks,

Jim R.
 

Liz315

Bronze Supporter
Jul 12, 2020
128
Hammonton, NJ
Pool Size
15000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Is that normal and ok to add? Will it cause efflorescence after the final plaster is done or years later? Or is it normal and will be fine.
 

jimmythegreek

TFP Expert
Bronze Supporter
In The Industry
Aug 10, 2017
3,432
Morris Cnty NJ
It all depends on what they added. I never use it because it's horrible in finished flatwork but I dont do much concrete that's seen these days. Ask the PB what his plan of attack is going forward. I suspect they will use a concrete etcher and proceed after cleaning it up
 

Liz315

Bronze Supporter
Jul 12, 2020
128
Hammonton, NJ
Pool Size
15000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Still waiting to hear back from the pool builder. Any other feedback or reassurance. My main concern is it will be an endless fight of efflorescence on plaster and waterline tile once the pool is complete. I’m hoping I’m over thinking it and it’s as simple as cleaning it up and it will be fine.

thanks,
Liz
 

Liz315

Bronze Supporter
Jul 12, 2020
128
Hammonton, NJ
Pool Size
15000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
So in case anyone else has the same problem. My builder said it’s fine that it’s pretty much calcification due to the weather being very cold drawing things out of the gunite. Prior to plaster and tile they will clean it up and it won’t be an issue. He said it’s only an issue on final plaster if it occurs.
 
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