19 Dry mortar, namely, mortar for masonry, for concrete, for flooring, for plastering, for rendering, for tiling, for waterproofing; pasty building materials, namely, tile mortars and grouts for fixing tiles, cements and plasters; expanded clay granules for use in building and construction, namely, for use in clay slabs, bricks, blocks, wall and ceiling elements, and as a lightweight filler for concrete, masonry mortars, floor screeds, renders, plasters, tile fixes and waterproofing products; building materials and components of building materials, namely, plaster, limestone and clay for slabs, bricks, blocks, wall and ceiling elements; expanded volcanic rock for use in building and construction, namely, for use in concrete, masonry mortars, floor screeds, renders, plaster, tile fixes, waterproofing products; bituminous products consisting of one or two components, namely, bituminous wall, floor, ceiling and roof coatings; non-agricultural lime for use in construction, namely, lime or lime cement based waterproofing materials