How To Regrout a Shower Floor

Even with regular cleaning, the grout on your shower floor tiles will get old, moldy, dirty-looking and cracked in some places. This can make your shower stall look dingy. Rather than pay a professional to regrout the floor of your shower stall, why not do this yourself? There are materials and tools available that will help you to regrout your shower floor in no time. Below are the steps on how to accomplish this project.

  • Clean the tiles in your shower stall. Soap scum builds up through constant use of the shower. Use a tile scrub brush and your cleaning solution to clean the shower floor. If there has been caulking that has been applied over the grout you have to remove this first. Scrape it off with a knife with a thin blade. Remove those over the shower floor as well as on the bottom sides of the shower walls.
  • Sweep off the caulking material that you have removed. Use a grout removal tool such as Super Cut or a Fein Multimaster to remove the discolored, cracked and moldy grout. Remove all the grout with the tool, cleaning and brushing between the tiles with a stiff brush to remove bits of grout embedded in the gaps. It is very important that the lines between the tiles on the shower floor are clean to ensure that the new grout will grip firmly.
  • Dry the shower floor completely. It may take a few days to have the shower floor completely dry. You can speed up the process with an electric fan or dehumidifier if you are lucky to own or rent one. The gaps between the tiles should be completely dry so that moisture will not be sealed between and under the tiles when the grout is applied.
  • Buy professional grout powder and latex additive. These products will be better for your shower floor rather than pre-mixed grout materials that are more easily available. Follow the directions on how to mix the grout and the additive and apply the mixture in all the lines. A grout float will help you to apply the grout faster.
  • Once you have applied the grout over all the lines get a bucket of clean water and a large sponge. Dip the sponge in the water and squeeze off the excess. Use this to wipe off the excess grout over the tiles and the lines. Rinse the foam after one or two swipes until the shower floor looks clean. Replace the water and sponge the surface several more times. Use a soft rag to dry the shower floor and allow the grout to cure for about forty-eight hours.
  • After the grout curing period has passed, apply caulking over the grout. You can use a brush or sponge to apply the caulk. Allow the caulk to dry for about five minutes and wipe off the excess with a clean white rag. Apply two more coats of caulking material, waiting five minutes and cleaning up before applying another coat. Use caulking material that is one hundred percent silicon-based as this will ensure that the grout will completely seal to avoid moisture from penetrating the caulk and cause the growth of mildew and mold. Top the caulk with a professional tile sealant to prevent stains and mildew. Allow for the grout, the caulk and the sealant to completely cure for seventy-two hours.

It will take at least five days to one week from start to finish to regrout your shower floor. Make sure that the shower is stall is not used during this time. Schedule your regrouting project during summer or when the weather is hot and dry to ensure the proper curing of the grout as well as the caulk and sealant.


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