I doubt that you can find such a specific roof but fortunately it's easy to create in Sweet Home 3D.

Look at the side of the roof as if it was the top of a wall.
Draw a wall in the 2D pane that matches the side of the roof. Set the height of the walls to the width of the roof. You can curve a wallpart by dragging the little arrow in the center of that wallpart or by modifying the wallpart and manually set the curve on the bottom right of the Modify Wall dialog.

When you have the walls exactly like the "roof turned on its side" set a texture on it. Any texture will do for now. Setting the texture before export results in a much better alignment of the texture than setting it after export/import.

Export the walls (select the walls, menu "3D view", "Export to OBJ format"). Give it a sensible name like "Roof".

Import the Roof object by dragging the .obj file into the 2D pane or import through the menu.

You can now tilt the roof in the Modify Object dialog to its correct position and export/import again.

The roof will have strange material names for a roof. Go to dodecagon.nl and in the Manuals section you will find a PDF manual and example project about how to change the material names.

Good luck!