Dry ridge system , perfect for warm climate.OMG that last scene - backwards at the edge of the roof, feet in the gutter and no harness of scaffold. Sheesh.That nice pointing,and the reason ewhy he is going slow is so maybe he can have a nice finish,and yes you can add water for a nice smooth finish and it dorsnt change the color and it doesnt make it crack.Tje only reason it crack is the tile aint sitting probably or cracks in the bedding.