flagstone flaking and sinking!

by carol zido peregoy
(Wimberley, TexasUnited States)

Evidently my flagstone was not laid properly and it is sinking! It would be very expensive to have it torn out and redone correctly - what are my other options?

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To Richard NEW
by: Carolzp

Your last comment is what I fear - there are underground springs all over my property! It is a HUGE possibility! What do I do in that case???? Or could it just be because of the severe drought we are in?

flagstone sinking NEW
by: Richard

Depending what you want...Taking it up and re-doing the base material and laying it back down what be the best option.

Whatever you do you still will have to remove the material. After you remove the flagstone you can pour a slab and be done with it. Costly too.

If you choose to redo the flagstone be sure lay a good gravel base about 2 inches (for drainage) then about 2 inches of sand. Be sure to pack both the gravel and sand down with a tamper tool.

Lay you flagstone down with about 1 inch joint and fill in joint with polymeric sand.

This should give you many years of enjoyment.

With all of this said, you could have a more serious problem of sinking earth due to undergroound spring. Defintely have it checked out. Good luck.


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