Hairline cracks new pool

[cregazw]

Thoughts on hairline cracks showing up in unfinished shotcrete pool in Phoenix AZ?
Pool is 6 months old. Everything done except finish.

 

[poolinaz]

Thoughts on hairline cracks showing up in unfinished shotcrete pool in Phoenix AZ?
Pool is 6 months old. Everything done except finish.

Having recently finished my owner-build here in Gilbert, I wouldn't worry about them too much if they're truly hairline. They are most likely shrinkage cracks which are pretty common in shotcrete (based on my understanding). We had some fairly long (but not wide) cracks in our deep end and many others throughout the pool. I went as far as to involve the structural engineer and got the same feedback (i.e. shrinkage cracks).

Either way, your builder (or shotcrete contactor) should warranty against any issues. If you're truly concerned, bring it up with them.

 

[cregazw]

Thanks. How soon did yours show up?

 

[poolinaz]

Thanks. How soon did yours show up?

The bigger cracks showed up within the first week after it was shot.

 

[pooldv]

Yes, it is normal, my shell had small cracks also. Plaster will will them in.