i was just reading another post and a question was asked if poly sand was used. I know i'm a smaller company, and hardscapes are a smaller portion of our work, but i always use poly sand on my patios and walkways. I guess i thought i was losing my mind because none of my competitors are using it, none..... i was talking with the block dealer, and she couldn't believe this. For the price of it, and how great it works, i can't believe its not standard practice. i guess to cut costs they skip it, i would rather price it in, and have a higher quality job. My customers today we arguing about what i put on their patio because i never really explained to them what poly sand was, and she thought it was special sand, and he thought we sprayed a glue on it. Once i explained it they were thrilled. i would imagine most of you who install patios almost full time use it consistantly, i just couldn't see not using it. Are there any benefits of not using it, maybe in areas that require more drainage?