I installed mine today and I think the answer is no.
If you look at the union picture here https://www.amazon.co.uk/EasyRidge-Dry-Fix-Ridge-Kit/dp/B00UNOOV4E
There's no channels. What's to stop water hitting the union part and splashing sideways a bit, in which case it will drip onto the mesh (which isn't waterproof at all) and then enter the secondary barrier, if there is one?
If you look at the union picture here https://www.amazon.co.uk/EasyRidge-Dry-Fix-Ridge-Kit/dp/B00UNOOV4E
There's no channels. What's to stop water hitting the union part and splashing sideways a bit, in which case it will drip onto the mesh (which isn't waterproof at all) and then enter the secondary barrier, if there is one?

