Large gap for polymeric sand


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Old 06-09-24, 01:40 PM
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Large gap for polymeric sand



 
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Old 06-10-24, 05:11 AM
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Do you have a question we can help with?
 
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Old 06-10-24, 05:26 AM
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Odd. It was in the preview.

Huge gap after power wash. 1/2Ē poly sand isnít large enough. Do I use a diff product or push a ton more poly in?

Also, there really isnít an easy way to power wash pavers without ripping up the grouts. Is this just something I need to deal with after cleaning ?
 
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Old 06-10-24, 07:22 AM
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First, polymeric sand is NOT grout, it contains no cement. It is not concrete. It is sand with a water based latex binder to help hold it in place. Polymeric sand is for gaps up to a maximum of 1/2". It's not a strong material so if you use it in larger areas it does tend to crack and break free in chunks eventually. After pressure washing you may have to reinstall more sand to repair the joints.

It (polymeric sand) is especially prone to cracking where different surfaces meet like the edge of a paver patio meeting a retaining wall. There is often slight movement over the seasons between the two structures so the polymeric cracks.

The other alternative is to use plain sand. It does not crack because it never hardens but it can be washed away by heavy rain or pressure washing. Plain sand is almost useless in larger gaps though as it washes away very easily, but it's easy to repair since you simply pour out more sand.
 
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Old 06-10-24, 07:25 AM
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Can you lay new poly sand over old to fix lost areas after power washing? Gator maxx sand supports up to 2Ē gaps? I just have a ton of poly left over that I was hoping to use.
 
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Old 06-10-24, 09:43 AM
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After pressure washing I refill the cracks on top of whatever old is left. Make sure everything is completely dry. It also works best if you do a little at a time to make sure you fill the gap from the bottom up. If I apply a huge amount all at once it can sometimes bridge in the crack creating a void/empty pocket.
 
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Old 06-10-24, 10:13 AM
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Is there a DYI to press the sand down if compactor is not available?
 
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Old 06-10-24, 11:25 AM
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I have used a hand tamper when doing large areas. You can also use a big chunk of wood. I don't hit hard but just create vibrations to help the sand settle into the cracks. For smaller sections I'll use a piece of wire to push the sand into the crack.
 
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Old 06-11-24, 05:03 PM
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