The choice is yours:
Classi Seal
This is the original product that has been a favourite among installers since 2006. It is specifically designed for waterproofing the critical junction between the wall surface and the bath or shower tray, ensuring a watertight seal.
Classi Plus
An upgraded version of Classi Seal, Classi Plus offers enhanced features, including a taller upstand which is particularly beneficial for small format tiles like mosaic or subway tiles. Its fleeced outer layer is compatible with tile adhesive and liquid sealing membranes, making it a versatile option for various bathroom designs.