These mediterraneans tiles are quite hard to simulate IMO...while a texure can do the trick and fool the eyes for a distant house...polygons give the best result for closer range view, specially if you have the roof receive shadows(from a tree)...you'll prolly have to spend a lot of time aligning and cuting them so they cover the roof perfectly...you'll need accessories too for the top and the side to look right...I use to group all of them when they are conform to what i expect and make the group appear like a box, or else it slows the displays... The texture is just made with photoshop air brush and a lil use of the texure filter. Hope it helps, Ediolon