Not only does it help protect your grout from spills that make it susceptible to stains, grout sealing helps protect your grout from mold and mildew growth, strengthens your grout, and slows down wear-and–tear. ... Epoxy grout is often used on non-porous surfaces, such as glass, and helps protect against stains and water.

Is it really necessary to seal grout?

Usually, grout is made of the cement material, making it porous. This is why it can absorb liquids readily. Hence, grout sealing is necessary for your tile surfaces. In addition, grout sealing is useful because it stops mold and mildew from growing on your grout.

What happens if you don't use grout sealer?

Grout is basically a mixture of sand and cement. As a result, if you don't seal your grout, it will absorb water, bacteria and stains. Adding a grout sealer protects your grout so it's water resistant and will repel moisture and germs. ... Your grout will look better and last longer.