Jumbo Slabs / BBQ Slabs / Slabs can be simply used for outdoor kitchens. These slabs can be used for island kitchens in your backyard. Jumbo Slabs are stocked in a variety of colours & stones including granites, sandstone and limestones. It won’t etch, or discolour, or lose its shine. Sealing granite countertops is a good idea to prevent stains. However, this is not complicated… easily done.