Aqua-Grade Linear provides a quick and easy alternative way of creating the perfect linear tiled wetroom drainage gradient for new pour solid floors. Impey the best for your wetroom. There are many new companies out there that offer wetroom solutions, but Impey has been there from the beginning Impey are the leading wetroom specialist in the UK. Leading the way in shower floor former technology, Impey continue to offer the latest and greatest wetroom solutions.