19 [ non-metallic minerals used for buildings and construction, namely, granite, marble, limestone, slate, sandstone and quartz; ceramic materials used exclusively for buildings, namely, tiles, pavement tiles, roofing tiles, floor tiles, wall tiles, ceiling tiles; bricks and refractory furnaces, refractory furnace linings, ceramic shapes for use in refractory furnaces, refractory bricks, blocks and mortar; synthetic materials used exclusively for building, namely, roofing felts, roofing membranes, vinyl siding, polyethylene board material used as a wood substitute ]