Bricklaying with Leca, which drip edge under the first course?

[SwiftD]

I'm planning to lay leca on the concrete slab. I thought about using roofing felt as a slip layer but I'm wondering what type of drip edge to use under the leca blocks for the centimeters that the block will hang out from the slab?

Feel free to link to a product!

 

[Bemmin Byggare]

Stainless steel base