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No, you don’t need to remove the old grout before installing new tile over existing tile. In fact, the old grout helps fill in gaps between tiles, creating a more even surface for the new layer. However, it's important to ensure that the grout is clean, solid, and free of cracks or crumbling areas. Damaged grout should be repaired or replaced before proceeding. Cleaning the surface thoroughly and filling any low spots will help the new adhesive bond properly and ensure a smooth, stable installation.

Larger tiles can be difficult to install because they’re heavier and bulkier than their smaller counterparts, which makes them harder to haul around and put in place. Plus, if you don’t install the tiles correctly, they could crack or break. For these reasons, it’s best to hire a professional for large-format tile installation.

Thinset mortar is the best adhesive for ceramic tiles on concrete. It is easy to work with and has a slower dry time than mastic or epoxy mortars. This longer dry time gives the installer more time to adjust tiles, which is especially useful for DIYers who may not have tile installation experience. It can also be built up to help level any depressions or gaps in the concrete subfloor.

Porcelain tiles can last 60 years or longer. With high-quality tiles and proper installation, your porcelain tiles may even outlive you, making them well worth the initial investment.

To help your porcelain tiles last longer, you should clean and maintain them regularly. You don’t need any harsh chemicals to get the job done. Rather, use a cloth, hot water, and mild detergent. And don’t forget to learn how to clean floor tile grout, as that’s just as important as tile maintenance.