BALCONYseal® is a revolutionary product that provides a solution to waterproofing on a SPIG-LITEadvanced balcony installation. It comprises of drain blocks that sit underneath the SPIG-LITEadvanced spigots before the spigot is fixed into place. The drain blocks are subsequently filled with sealant to create a fully waterproofed balustrade installation. For further assistance please read the installation guide. These systems are designed to work only with Pure Vista products, variations of BALCONYseal exist for POSIglaze channel.