Yes, grout should be sealed in most cases, especially in high-moisture areas like bathrooms. Here’s why sealing grout is important:
1. Protects Against Stains
Grout is porous, which means it can absorb water, dirt, and spills, leading to stains and discoloration over time. Sealing the grout helps create a protective barrier that makes it more resistant to staining.
2. Prevents Mold and Mildew
In bathrooms, where moisture is abundant, unsealed grout can absorb water and encourage the growth of mold and mildew. Sealing the grout helps reduce the amount of moisture it can absorb, minimizing the risk of mold growth.
3. Easier Maintenance
Sealed grout is easier to clean, as it resists dirt and grime buildup. It also allows you to wipe surfaces down more easily compared to unsealed grout.
4. Longevity
Sealing grout helps maintain the integrity of the grout lines by preventing cracks and breakdown caused by water infiltration, extending the life of your tile and grout.
When Should You Seal Grout?
- New Grout: Always seal grout after it has dried, typically 48 to 72 hours after installation.
- Re-sealing: Grout should be re-sealed every 1-2 years, depending on the amount of moisture and foot traffic it experiences.
However, not all grout needs to be sealed. For example, some epoxy grout and pre-sealed grout do not require sealing. It’s important to check the manufacturer’s instructions for the specific grout you’re using.