Just recently installed a patio at my new home and decided that I should do the screeding base on sand. Its been a couple of years since I've used sand but thought what the heck I will do it for my place. I should of paid more attention to the sand because it was mixed with more fines than I had recalled seeing when I used to use it. Well it rained huge before getting a chance to install the poly sand and compact. Too large an area to cover so tarps weren't really an option. Fast forward 4 days... brick pavers are saturated and bleeding moisture thru the stone. Yesterday I compact the brick, broke a few so lifted and replaced them, the sand base is still extremely wet. So, wait til base dries? We've had over 100 days of rain since end of March, so doubt this will happen any time soon. I'm thinking to use a silica sand so that it may eventually dry out. The poly sand with concrete additives I'm thinking would prevent this from happening. Thoughts???