As the TCNA recommendation notes, it can be difficult to match the color of the caulk with the color of the grout used in the rest of the shower. Grout dries firm and strong, so it helps protect the edges and corners of tiles from cracking or breaking. The grout joint and the sides of the tile have to be very clean. It sure would be easier. Regrouting is a task that almost any homeowner can accomplish. Generally, the manufacturers recommend you apply the caulk removing solution and leave it overnight for it to properly bite into the old caulk and release its bond from the surface. Caulking Over Grout When making small connections, such as connecting the shower wall tile to the top of the bathtub, caulk is the perfect material. A tube of caulk costs $5, and you could probably cover those gaps in 15 minutes. Just noticed a small crack in the grout between the tub and tile of my bathroom (Redone professionally 2 years ago). With gaps that large what you can do it install a bead of silicone against one side about 1/8″ thick (leaving the rest of the gap open), then once cured grout between the tile and silicone. The easiest thing to do is buy a white grout colorant, which is an epoxy paint, and paint over the joints. What you could do to keep it looking nice is fill the cracks in with more grout so that it looks perfect and then put clear caulk over top or dig out all that grout and caulk it with white caulk. If you try adding new grout over your old grout, the new mixture will not properly adhere to the existing grout or tile edges, leaving your shower open to water damage. So can you caulk over grout? The grout in my kitchen where the tile floor meets the … The grout in my shower wall corners and where the tile meets the bathtub is cracking or completely missing in some areas. However, if you 're attempting to replace the grout connecting the bathtub to the floor, or filling the space between two tiles or stones, your best bet is to re- grout … Don't silicone over those weep holes, they're there by design to allow water that reaches behind the tiles or gets inside the door to drain. Theoretically its possible assuming that all tile is cemented with tile adhesive into permanent position. Although you don't have to remove all of the grout when attempting to repair or regrout a wall or floor entirely, there are a few key points to know when placing grout over grout. You don't. 1. If your bathroom is mostly done in white, but the accent pieces are in a metallic color, a dark-colored grout can help pull that darker metallic color around the room, uniting the space visually. Vacuum out the area to remove every bit of grout, then apply caulk and smooth it out with the caulk gun or the back of a spoon, or even your finger. So, you need to put the caulk over a new caulk so fast that the caulk applied in two different layers can mix between them and bind them like they're applied at a time. I've read that grout around a shower is meant to allow water to travel in both directions. You can apply the paste directly over existing caulk. Can I just caulk over this, The grout in my shower wall corners and where the tile meets the bathtub is cracking or completely missing in some areas. Can You Caulk Over Grout. It is a tedious process, but if you are careful it can give you the white grout joints that you want. Caulking Over Grout When making small connections, such as connecting the shower wall tile to the top of the bathtub, caulk is the perfect material. I generally use Impregnator 511 and if you buff the tiles lightly there will be zero sealer on them to cause spots or issues with sheen. Hi. However, if you're attempting to replace the grout connecting the bathtub to the floor, or filling the space between two tiles or stones, your best bet is to re-grout it. I had this problem the other day. As I was first trying to remove the old caulk, it seemed like either the caulk was super cheap and petrified or they caulked over grout. Placing caulk over grout in the corners will just lead to cracked grout in the corners that can not fall out – but it’ll still be cracked. Warning. 2. Can I caulk over cracking grout (for now)? Caulk can be color matched to match the existing grout so it can be difficult to distinguish it from the grout. However, if you're attempting to replace the grout connecting the bathtub to the floor, or filling the space between two tiles or stones, your best bet is to re-grout it. Caulk is silicone, acrylic, or latex based, which is flexible and can help absorb movement, whereas grout can crack. 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