SUBSTRATE PREPARATION
The tiles edges and surface should be free from dirt. Start grouting only when the tile adhesive is sufficiently set and dried. For grouting tiles susceptible to colour change (natural stones) we recommend doing tests before to check that Vura SiGro does not leave permanent marks on the tile surface or edges.

APPLICATION
Vura SiGro should be poured into the measured amount of clean water and mixed until a homogenous mass without any lumps is reached. Wait 3 minutes (maturing time) before second mixing. Do not use rusty or dirty equipment or tools. Apply the grout with a grouting float, completely filling the joint. Allow sufficient time for the grout to set in the joint before starting to clean (finger test). This time can vary from 5 to more than 30 minutes and depends on the tile absorption properties, joint width and depth, as well as ambient and substrate temperature. After initial drying, the surplus of material should be removed with a clean, semi-dry sponge. When cleaning please do not use a dry cloth as this may cause a risk of discoloration by rubbing dried grout mortar into the damp grout. Washing the tiles, a second time with clean water on the next day supports a homogenous surface and mineral hydration (second rewetting). Tiles can be walked on after 24 hours from the application. Grout can be exposed to water after 24 hours. Within the first 5 days after the application, only clean water without any cleaning agents should be used. Grout reaches its complete properties 7 days after application.