Every shower needs to be waterproofed
Within the Classi Range we have three options, depending on budget and wall finishing. If you are finishing with wall panels, we would recommend using Classi Seal. For completing the installation with tiles than you have two options. To waterproof the entire enclosure and walls then you should use the Classi Kit, or if you just want to make sure the ledge between the tray and wall is waterproofed then Classi Plus is the product to use.