Thanks to the help on this forum for what tiles to use for a 20 degree pitch i have decided on the Redland MOCKBOND MINI STONEWOLD concrete tile.
These are 418 x 334mm each and have a maximum depth of 31mm.
On a 20 degree pitch these need to be spaced at 100mm battens.
I am just not sure which Velux Flashing Kit i need for these tiles. I already have the windows.
It seems that the EDZ is the one as this can have a profile of 15mm - 45mm.
Do you agree? They are expensive so i dont want to get it wrong :)