- 1). Ensure the tile grout is completed in the areas where you'll be sealing it. This means all cracks must be filled, all joints connected and tile must be set cleanly and symmetrically. Ensure that the grout is dry and hardened before applying the seal.
- 2). Depending on the type of grout you are using--membrane-forming or penetrating--make sure you also read the instructions on the label to properly lay the seal. Most grout sealers will dry fairly rapidly, so while it's OK to get some of the sealant on the tile itself during the process, wipe up excess sealant within a few minutes so it doesn't dry on the tile.
- 3). The most popular form of sealant is the spray-on variety. This type allows you to stand and spray the sealant into the cracks and crevices where the grout holds the joints. Again, have a rag handy to wipe up excess sealant that misses the grout. Some sealants, once dried on ceramic tile, will show up visibly and look both uninviting and spotty.
- 4). Make sure that you've covered all areas and joints you wish to seal. A good tip is to start from one end and methodically work your way to the other end without skipping sections. Map off a course of action before starting to eliminate problems as the grout sealer is drying.
- 5). Wait for the sealer to set. Eliminate all excess sealant from areas that are not grout-covered. If you do happen to miss a spot and get dried sealant on tile, you should be able to buff it out with a rag or cheesecloth with vigorous strokes.
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