Slate slabs texture background. Pattern of black slate wall. abstract, architecture, background, brick, brickwall, close up, construction, decor, decorate, design, detail, exterior, facade, fence, garden, granite, grey, horizontal, house, irregular, masonry, material, modern, natural, nature, outdoor, pattern, rock, rough, slab, slate, solid, stone, strong, structure, surface, texture, textured, tile, uneven, wall, wallpaper