Do I need to fix this crack or replace grout?

Poolnurse

Member
Aug 2, 2019
15
Fredericksburg, Virginia
Hi!

We've noticed some of our grout has disappeared around the skimmer basket and there is a hairline crack in the mortar above this spot. Are these just cosmetic problems or do they need to be fixed before freezing winter storms? (We're worried about water expanding the cracks and getting behind the pool walls). If we do need to add more grout, does it really need to be pool grout or can we use regular grout?
Thank you!
 

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