Chip it out clean and replace with a new mix.
The old grout can be cut out. The mist efficient way is with an oscillating tool with a grout blade. After the old grout is removed then new grout can be installed. This is a time consuming project.
form_title= Tile Grout form_header= Give your home a face lift with new tile grout! Do you want to install new grout?*= () Yes () No () Not Sure Do you want to clean out old grout?*= () Yes () No () Not Sure What color do you want the grout?*= _ [50] How old is the grout in your home? *= _ [50]
First you need to remove the damaged grout. Do this by using an old (or cheap!) flat head screwdriver to scrape and dig out the loose grout. Vacuum or brush away any dust. Mix grout mix and latex filler (to make it hard and more water proof) and fill in the spaces. Smooth the grout and then sponge off the excess that is on the tile. Allow to dry for a day and then wipe off again.
You pull out the old grout and re- grout the whole thing. If you do patches it never looks good.
form_title=Tile Grout Repair form_header=11833 What is the location of the tile? (Select all that apply)*= [] Kitchen [] Bathroom [] Countertop [] Backsplash [] Tub / shower or surrounding area [] Wall [] Floor [] Outdoors [] Other Please specify the type of tile that needs grout replacement or repair.*= () Ceramic tile () Porcelain tile () Natural stone () Marble () Travertine () Other () Don't know
After you have tiled, normally you will add the bonding liquid or sealant to the grout mixture. however there are liquids on the market that you can spray onto the tiles to seal the grout, however this is a temporary and not a recommended idea. It is better to scrap all the old grout out and re-grout with the proper mixture
Your local home store (Lowes. Home Depot, Ace Hardware) has grout in a tube. It's ready to use and has instructions. You can also use bleach and/or a Mr. Clean Magic Eraser if you prefer not to lay new grout.
form_title=Stone Tile Repair form_header=9993 What is the location of the tile? (Select all that apply)*= [] Countertop [] Backsplash [] Floor [] Wall [] Stairs [] Fireplace [] Swimming Pool [] Other Are there any spare tiles left over from the installation?*= () Yes () No How would you describe the nature of the damage? (select all that apply)*= [] Cracked [] Scratched [] Chipped [] Loose [] Worn [] Discolored/Stained [] Dull/Hazy [] Need cleaned [] Need polished/sealed [] Grout discoloration [] Grout damaged or gone [] Grout has mold/mildew [] Grout needs cleaned [] Grout needs sealed [] Want to change grout color [] Other
form_title=Ceramic & Porcelain Tile Repair form_header=11803 How would you best describe the damage? (Select all that apply)*= [] Cracked [] Scratched [] Chipped [] Loose [] Worn [] Tile discoloration [] Grout has mold/mildew [] Grout discoloration [] Grout damaged or gone [] Grout needs cleaning [] Grout needs sealing [] Want to change grout color [] Need caulking [] Don't Know [] Other What is the location of the tile? (Select all that apply)*= [] Countertop [] Backsplash [] Walls [] Floor [] Stairs [] Tub/shower stall [] Other [] Swimming Pool Are there any spare tiles left over from the installation?*= () Yes () No
form_title=tile and grout cleaning form_header=11813 Describe the kind of service you are looking for.*= () Clean / Seal grout or tile () Stone or marble polishing () Replace or repair grout Give the type of surface that is involved?*= [] Kitchen [] Bathroom [] Countertops [] Backsplash [] Tub / shower or surrounding area [] Walls [] Floors [] Outdoors
form_title=Grout Cleaning form_header=11823 Describe the kind of service you are looking for.*= () Clean / Seal grout or tile () Stone or marble polishing () Replace or repair grout Give the type of surface that is involved?*= [] Kitchen [] Bathroom [] Countertops [] Backsplash [] Tub / shower or surrounding area [] Walls [] Floors [] Outdoors
Yes - but you are always best off removing a large portion of the old grout before re-grouting. After letting the new grout dry for 48 hours, consider using a grout sealer to make it last longer.