Since any deviation will be immediately visible.

Plastic is a rather popular and inexpensive option, although you can argue about the price. The plastic itself in the stripes is not expensive, like the rest of the components for work, but the preparation of the base will cost more than the rest of the options. Since any deviation will be immediately visible. It is worth noting that the plastic is quite fragile material and any overload will leave a trace that does not hide. If the price of the project for the binder of the cornice of the roof is in the first place plastic cornices should be considered as an option. If a plastic strip is broken in the middle of the cornice to replace it (if there is something), you need to disassemble the entire structure from the edge, to a problematic place and, after replacing, collect it back. This will take a lot of time even if there is experience and tools, otherwise it may be an overwhelming task. For comparison, the metal or high -quality lining is not damaged as simple as plastic. Although the work to replace the damaged part of the latter is very similar.