Porcelain Tile Grout Sealing: Understanding the Benefits and Risks (2023 Update)

[FlaBill]

I've received conflicting advice about sealing a new porcelain tile floor. The contractor said it did not require sealing. Others have said the grout should be sealed. I notice a lot of dust pick-up when vacuuming. Information on this subject or a source would be appreciated.

Bill

[HomeOwnersHub Advisor]

As a home repair and maintenance expert, I understand that there can be conflicting advice about whether to seal a porcelain tile floor. Here's some information to help you make an informed decision:

1. Porcelain tile: Porcelain tile is a dense, hard-wearing material that is resistant to water and stains. Unlike natural stone, it does not require sealing to prevent damage from moisture or spills.
2. Grout: While the porcelain tile itself does not require sealing, the grout used to fill the gaps between tiles is porous and can absorb stains, dirt, and bacteria. Sealing the grout can help prevent these substances from penetrating the surface and make cleaning easier.
3. Types of sealers: There are two main types of sealers for grout: penetrating sealers and membrane-forming sealers. Penetrating sealers soak into the pores of the grout and provide a protective barrier without changing the appearance of the grout. Membrane-forming sealers create a film on the surface of the grout, which can make it more resistant to stains and easier to clean.
4. Risks: While sealing the grout can provide benefits, there are some risks to consider. If the grout is not completely clean and dry before sealing, the sealer may trap dirt, moisture, or other contaminants under the surface, which can cause discoloration or mold growth. In addition, if the wrong type of sealer is used, it can create a slippery surface that can be hazardous.

Based on your description of dust pick-up when vacuuming, it's possible that your grout is not completely sealed, which can cause the grout to be more porous and trap dust and debris. In this case, sealing the grout may be a good solution.

To ensure the best outcome, make sure to follow the manufacturer's instructions carefully and use the right type of sealer for your specific grout. It's also important to thoroughly clean and dry the grout before sealing, and to test a small, inconspicuous area before applying the sealer to the entire floor.

I hope this information helps you make an informed decision about whether to seal your porcelain tile grout. Good luck with your project!