Grout mixes with sand to reduce shrinkage for joints over 1/8 inch wide between non-glass tiles. Part of installation requires smoothing the grout so no rough edges form while it cures. Rough edges trap dirt and can scratcj your feet when you walk on them.
Why does my grout look gritty?
The main cause of grout becoming crumbly or powdery is poor mixing and/or application. When mixing cement based grout with water a chemical reaction known as 'hydration' is put into action. It is this reaction that causes the grout to transform from a thick paste into a hard tile joint.
How do you smooth grout after it dries?
Sugar and Water Method
- Mix 1 cup of white granulated sugar into a gallon of hot water. ...
- Pour the solution over the grout, or apply it to vertical surfaces with a sponge. ...
- Scrape off large chunks of grout using a wooden paint stick. ...
- Keep the grout wet with the sugar and water solution as you work.
