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Gator Dust is expensive. What else can we use for filling flagstone joints?
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Gator Dust is expensive. What else can we use for filling flagstone joints?


We are almost ready to fill the joints on our flagstone walkway.

We want the joints to be solid. Not intersted in loose gravel, ground cover, etc.

Any alternatives to gator dust? I’ve heard of some DIY compounds using Portland cement. Anyone have experience with that?

Most of our joints are 2”. Largest ones up to “5.

by swagg_princess_2

29 Comments

  1. Tits_Sag

    Gorilla glue mixed into bulk sprinkles from Sam’s Club.

  2. 2nd2lastdragon

    fill the gaps with river rock then add polymeric sand

  4. Eggplant-666

    Good old DG, polymeric sand always falls apart eventually

  5. Particular_Win2752

    You could fill it 3/4 of the way with normal sand then top it with poly-sand

  6. jmb456

    You can use gravel fines but honestly at this point you’ve spent the money. Just do it right

  7. SkullFoot

    Fill it up with stone dust or whatever is nice and fine. I would not use any round pebbles because they won’t stay put and hurt your feet.

  10. Land_Shaper

    More flagstone and cut them in closer 

  11. Floppydongjohnson

    Every product has its drawbacks. The only thing you can count on is none of them are going to last, especially on a walkway. And it all depends on how you prepped underneath. Cuz if you didn’t do a good job with that no matter what you use you’re going to get moisture and water trapped underneath it which will break down the different products and break down your stones and possibly break down your base.

  12. PocketPanache

    You are looking for something that doesn’t exist and if you use the wrong thing you’re gonna hate it.

    Gator dust isn’t appropriate for gaps this large anyways. You’re basically looking for mortar set stone but I can already tell your base material isn’t correct for mortar either. Just use decomposed granite or something more interesting like 3/8 clean limestone chip rock with some color to it. Don’t get gravel. Get angular crushed rock.

    Edit: also don’t be cheap. It’s one of those things where you either spend the money and time doing it right or you pay for it twice.

  13. Dr_Solfeggio

    I put soil and planted dichondra. Love it

  14. Ok_Pollution_7988

    In this case, more flag stones should be used to fill in the gaps.

  19. frychrisfry

    Seal up some bigger cracks with foam or adhesive first

  20. paligators

    Doesn’t look like you really fit the rocks properly to the space. You have to get them a bit closer

  21. PassengerKey3209

    I use type s mortar right out of the back. Sweep on both axis and make sure to sweep off as much as you possibly can. Using a hose nozzle gently wash the stone clean with as little water as possible. Allow to firm up for 5/6 hours and then wet down again. Joints end up just below flush but very strong and with no weeds over time.

  22. TheProfessor0781

    If you can’t afford to do it right the first time, you certainly can’t afford to do it again.

  24. mattimattlove111

    Ash from the fire place or barbecue

  25. DeviousMe7

    I ripped my flagstones out, they gathered dirt and weeds and became trip hazards.

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