I'm going to be putting on a pitched roof (on a shed) using Redland Renown tiles, with cloaked verge tiles. I've decided to counter batten the roof to give a larger batten void (25 mm x2 so 50 mm ) and more air flow under the tiles. It seems like a good idea in terms of drainage over top of the roof underlay too. It will be a warm roof insulated up to the roofing underlay. In the Marley instructions, and according to a guy from Redland, an undercloak board should still be used with a cloaked verge tile to close the opening right under the edge of the claoked verge tiles. Which makes sense to me. The thing I'm wondering now is should I place the undercloak board over the counter batten, meaning the edge of the counter batten is basically visible if you look close (not a problem, just mentioning it for clarity to explain my thought process!), or under it meaning the under cloak board is as low as possible with respect to the verge tiles? There isn't much on cloaked verge tiles on the internet, and not too much on counter battens, so I couldn't find many relevant pictures etc.