[DangeloInspections]

I often to my clients to always use a product called "Shark Grip" when they add any coating on their driveways and garage floors. A bottle costs less than $10.
Adding a cup per gallon of coating works well as an anti-slip additive. You can buy it at any of the "Big Box" home improvement stores.
I know this does not help the original poster, but hopefully it will help someone in the future.

Frank