# Grout and caulk

> Grout that cracks, caulk that peels, and mold in the corners. Ask with your Sheet attached: homeowners who’ve done it and verified pros answer, and anyone can read it.

## Before you ask

Where it fails, how old it is, and a close photo.

- **Attach your Sheet** so people see your sizes and the math.
- **Your town is enough.** Never your address; check photos for house numbers and plates.
- **Is it safe?** A safety question here goes to pros verified in tile, unless you pick another trade. Only they can call it safe or unsafe.

## Re-caulk a tub, shower or sink

Tub, 22 ft of caulk: 1 tube of silicone for a 1/4″ bead, and 24 h before water touches it.

What people get wrong:

- **New silicone over old.** It won’t stick.
- **Caulking a wet joint.** Water trapped under the bead grows mildew.
- **Acrylic in a wet joint.** It shrinks and lets go.

[The worked example, every line's math and the code notes](https://studsheet.com/sheets/caulk) · [Your own sizes in the app](https://app.studsheet.com/p/caulk)

## More in Tile

- [Floor tile](https://studsheet.com/forum/floor-tile): Tiling floors: layout, underlayment, setting and grout
- [Tile showers and tub surrounds](https://studsheet.com/forum/shower-tile): Waterproofing, layout and tiling wet walls
- [Backsplashes](https://studsheet.com/forum/backsplash): Kitchen and bath backsplash tile
- [Stone and large tile](https://app.studsheet.com/community?tab=talk&room=tile-stone): Marble, slate and big-format porcelain
- [Every group](https://studsheet.com/forum#every-group)

## How the community works

- **Open to read** from anywhere, no account needed.
- **Sign in with your email** to ask, answer and vote. No password.
- **The best answers rise:** votes, “worked for me” and a solved mark. Verified pros carry a badge.

Questions? Write to [support@studsheet.com](mailto:support@studsheet.com).