How-To Videos

Do It! How to Install Ceramic Tile over an Existing Floor

By: Danny Lipford

Before you can install new ceramic tile over existing ceramic tile, you’ll need to do some surface preparation.

The first step is sanding the old tile with 100-grit paper to rough up the surface.

Next, you’ll need to apply a bonding primer to the surface.

To fill the grout joints in the old floor, we’re mixing up a floor-leveling compound. This material is a relatively thin liquid when it goes on, so it will flow into the low places and level itself.

We trowel it over the old tile to fill in the grout joints so that once it’s dry, we have a completely flat, level surface across the whole bathroom.

From this point, the process is much like any ceramic project. We chalk layout lines along the longest dimension of the room and begin applying thin-set mortar with a notched trowel. The thin-set acts as glue to secure the tiles to the floor.

The chalk lines and plastic spacers help us maintain straight lines and consistent spacing.

Once the tiles are in and dry, we can apply the grout with a rubber float before we clean off the excess material, revealing our new finished tile floor.


Danny Lipford

Danny Lipford is among the country’s most sought-after home improvement experts.
The seasoned remodeling contractor and media personality served as the home improvement expert for CBS’s “The Early Show” and The Weather Channel for over a decade and has made more than 180 national television appearances on “Fox & Friends,” “Inside Edition,” “Morning Express with Robin Meade,” Fox Business Channel, Rachael Ray and more.
He travels the country making appearances as a brand ambassador and spokesperson, and each year contributes expertise to hundreds of popular magazines and online media outlets.

Chelsea Lipford Wolf


Chelsea Lipford Wolf is a born-and-raised home enthusiast, adding her crafty skills and passion for DIY as co-host of the top-rated, nationally syndicated “Today’s Homeowner” TV show.
In addition, Chelsea maintains her own home lifestyle and décor blog and award-winning web-series, “Checking in with Chelsea.”

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Do It! How to Install Ceramic Tile over an Existing Floor