| http://www.w3.org/ns/prov#value | - Many of these materials are also sloped to aesthetically look like wood planks that are overlapped, one on top of the other giving each plank a slight incline instead of a substantially flat surface.One of the problems with conventional siding that is constructed with panels or planks from the wall bottom up, i.e. each horizontal plank being covered by one on top of it, is that high winds can lift
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