[trees]

We're poised to give polymeric sand a go for the first time on a job coming up in a couple weeks. 450 sq. ft. snapped edge flag patio -- thumb joints.

So, previously I have been doing this kind of thing with a mix of crushed limestone and portland, with the limestone as the levelling base. Can I still use that as my base or do I need to use sand?

I understand that making sure everything is totally dry is important and proper cleanup is essential, but what tricks have you found to doing this. On hands and knees with a whisk broom, or what?

I'm excited to give this a try.

The client wants more of a mortared joint look, and this seems like the best option available, so let's make this into a primer for newbies (like me) to polymeric sand.