Tiling projects begin with a simple process of laying mortar and tile. Once the mortar and tiles have had adequate time to set completely, the last step is to grout and seal the tile. It's an easy do-it-yourself project that can be done in a matter of just one or two hours, if you have all the right materials on hand.

The materials needed to grout tile, first and foremost, includes the right type of grout. There are two basic types (both of which come in a variety of colors, which you can choose based on your aesthetic preference). The first type is "non-sanded grout", and is used for tile projects on walls, where the tiles are placed no more than 1/16" apart. "Sanded grout", on the other hand, is meant for floor and countertop tilling projects where the gaps between tiles are commonly more than 1/16" apart. The added sand helps prevent imminent shrinking and cracking in the grout once everything has dried and set.http://www.hometime.com/Howto/projects/ctile/tile_13.htm

In addition to the proper grout, you'll need a grout float tool, rubber gloves, a heavy-duty sponge, and a couple buckets of water. You'll also need a commercial tile sealer for the last steps of the project. Some people also find that knee pads make the job more comfortable.

With all your materials in place, just follow these steps to learn how to grout tile.

Once your grout is mixed exactly according to package directions (pre-mixed grouts are available and can save time and frustration, then it is time to apply it using your grout float. You may want to wear your gloves and knee pads for this step, and from here on out. Here is what to do:

1. Use your grout float to spread the grout out over the tile and seams in a diagonal movement (to keep the edge of your float from scraping the inside of the seam) that pushes the grout down into the gaps.
2. As you work your way across the tiles, if you're working on a floor project be sure not to stand on any of the freshly grouted tiles.
3. Once grout has filled all the seams, use the grout float to remove excess grout from the tile tops, again keeping the float moving diagonally so that the edge doesn't catch in the seams.http://www.hometime.com/Howto/projects/ctile/tile_13.htm

Now it's time to remove the excess grout residue that's sitting on top of the tile. This is where your sponge and buckets of water will come into play. Be sure to use a sponge that's rounded on all edges. No pointed edges. Here's what to do:

1. Wet your sponge and wring it out thoroughly. Overly wet sponges can commonly ruin a grouting job and cause it to crumble away later on.http://www.askthebuilder.com/701_Grouting_Tile.shtml
2. Now wipe away the excess grout by working the sponge in a circular motion over the tile.
3. Very gently with minimal pressure, use the sponge to smooth the grout seams.
4. Rinse out the sponge regularly in clean water to keep it clean. Again, be sure to wring out the sponge well. This is not a step you should skimp on--keep rinsing that sponge plenty!
5. When a haze forms on the tiles a while later, a soft, dry rag can wipe this away, but should be used gently since the grout will still be setting.http://www.hometime.com/Howto/projects/ctile/tile_13.htm

To see a demonstration of this tricky process (which can make or break your whole project), see the video near the top of the page.

The type of sealant you'll be using--and when to use it--will be based on what type of tile you have. Some tiles need only for the grout itself to be sealed, while other types need the tiles themselves to also be sealed at the same time. And some porous tiles need a pre-sealant treatment so as not to lose their shininess. When picking out your sealer, make sure to pick a product that is designed for your tiles, and follow product directions precisely for application. Pay close attention to how long to wait before application, and if other products are needed additionally.

Once your sealer is successfully applied and everything has had adequate time to set and dry, then you're ready to enjoy your brand new tile! Caulking may be required in areas like bathtubs where there is heavy water exposure.