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Question DetailsAsked on 7/20/2015

swimming pool concrete patio sand

I just moved into a house with swimming pool. What I noticed is on the edge of the swimming pool patio, the sand has been washed off into the pool. Could be through regular use of the pool or rain fall. Any recommendation how to fix the problem.

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4 Answers

Voted Best Answer

They will need to remove any loose mortar, then reapply.

Answered 5 years ago by AquaMarkPoolsCom


Pic attached.

Answered 5 years ago by shiyang100


Hello, congradulations on your new home. That appears to be mortar, a mixture of cement and sand. Most competent masons can repair that for you.

Best regards,



Answered 5 years ago by AquaMarkPoolsCom


thanks Mark. Are they going to cut out old mortar or just fill the gap?

Answered 5 years ago by shiyang100


Assuming this is grout rather than compacted sand as the other comment said - I would cdertainly hope so on the pool deck anyway.

All loose or readily chipped out mortar should be removed, then replaced with new grout - would only replace essentially all if the flagstones are coming up and are loose. Should use Pool grout - has additives and a latex base to make more resistant to the more highly chlorinated and acidic pool water than normal cement mortar. And ALL the grout should be scrubbed clean and then should be sealed after repair grout curing to increase resistance to deterioration like you are seeing. For the width joints you have should be sanded grout like you have - what you are seeing is the sand left over after the cement in the grout got leached away.

Answered 5 years ago by LCD

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