I have been modelling an old house with the very useful add-on roof accessories to create 3D modeled roof tiles.
I have now come to a standstill regarding a roundish roof. It goes as in the following image:
The problem is that the roof accessory only works on roofs. I have tried using a shell but the add-on doesn't respond. When it comes to the linear straight overhung part I usually to an airspace roof then cover it with the add-on tile. I was trying to operate the same trick with the round shell but I haven't been able to do so.
Sometimes you just have to model things the hard way if you want the best results. Model the tiles. It is not too difficult. Kind of fun too. To do that, I would recommend that you use a Tile Object with a simple .gdl script added for rotations. They can be placed/multiplied along curve, placed perpendicular to a surface along a morph line, all sorts of clever way to do it. And in the end you will be very pleased with yourself. 🙂
There's no need to do any GDL scripting to achieve this.
Just create a small roof segment with that 5% pitch and apply the accessory to it. and then convert the whole thing into a Morph object. (you might have to Boolean Union them to make them one combined single object). And then in 3D rotate it to line up to one side of the curve with the plane of the wall as the rotation axis, and then rotate and multiply to complete the process with the radius and center-point as that curved wall you've already modeled.