10 Best Gravel Types for Drainage (Pros Cons) | House Grail
· The stone in this gravel is machine crushed, with medium to largesized pieces that are perfect for acting as the midlayer in a drainage system. It's not a particularly pretty gravel, so you won't want to use it on the top layer, and it's not big enough to fill the bottom layer for most situations. Pros Doesn't compact and stick together