The lifespan of tile flooring can vary significantly based on the material and maintenance. Generally, tile flooring can last anywhere from 10 to 30 years, but high-quality, well-maintained ceramic tile can last 75 to 100 years. To achieve a longer lifespan, you should clean the tiles and grout regularly, reseal the grout annually, keep the floor dry, and avoid placing extremely heavy items on it to prevent cracking. Choosing a high-quality tile (Grade 1) will also contribute to its longevity.

Grouting hearth tiles is one of the most important steps. It seals the tiles so heat doesn’t transfer under the tiles so easily, which can be dangerous. For this reason, heat-resistant grout is a must. Grout also prevents dust, dirt, and any other material from gathering between your tiles. If this happens and those buildups are flammable, a fire could start between the tiles. 

Grout and caulk are commonly used together, especially in bathrooms. Grout goes between the tiles and keeps them sturdy and in place on the walls or floor. Caulk goes in corners or where two different materials meet (like where the bathtub meets the tile) to create a waterproof seal. However, they are not interchangeable—you shouldn't use caulk to adhere tile and shouldn’t use mortar if you need a waterproof seal.

Add a T-shaped spacer to each corner of a tile when placing it. You’ll want to nudge the tiles closer together so the spacers are touching each corner. When you’re done installing your tile, you can remove each spacer, wash them, and use them for your next project.