The spray on variety is the most common although some types can be applied with a sponge or brush.
How to apply grout sealer to wall tile.
If your tile is not glazed be extremely cautious when applying the sealant as it will absorb directly into the tile and will change the color and finish of the piece.
The best way to prevent this is to seal your new grout and repeat as needed every year or so for wall and floor tiles that don t get much moisture and more often for grout in the shower or on.
Then clean the tile before you seal it.
Whether you are repairing or replacing tile and grout new or old sealing them is the last and usually most overlooked step.
Apply your sealer to the lines and joints of the grout.
Choose a solvent based sealer for ceramic and porcelain tile or a water based sealer for natural stone tile.
Step 3 application.
In this quick episode i discuss how and why you should seal the grout and tile of your bathroom.