Refresh tub and shower caulk
Annual · typically January
Why it matters
Grout is rigid and belongs on the flat planes of tile. Caulk is flexible and belongs at every joint that moves — where the tub meets tile, where planes change direction, around the shower door. A tub full of water and a person flexes measurably; the caulk joint is what absorbs that movement. When it cracks, pulls away, or peels, water gets behind the tile on every shower, and everything behind the tile — greenboard, subfloor, framing — is on the wrong side of the waterproofing from then on.
January is the slot on purpose — an indoor job for the deepest indoor month.
What skipping it costs
$800–$8,000
The bead where tub meets tile costs fifty cents of silicone. When it cracks, every shower sends a little water into the wall and down into the subfloor — invisible until the floor softens, the joists stain, or the ceiling below blooms. Subfloor and framing repair behind a tub runs $2,000–$8,000, and it all traces back to a hairline gap nobody looked at.
Two ways to get it done
Do it yourself
You'll need: Caulk removal tool or razor scraper, Caulk gun, Painter's tape, Rubbing alcohol and rags, 1 tube 100% silicone kitchen & bath caulk (~$8), Mildew-resistant, in white or clear.
- Inspect first: press the existing bead. Sound caulk is adhered, rubbery, continuous. Cracks, gaps, peeling edges, or dark staining UNDER the bead = redo time. If it all passes, wipe it down and you're done for the year in ten minutes.
- Removal is the job. Razor or caulk tool, get every trace — silicone residue rejects new caulk. Patience here decides whether this lasts five years or five months.
- Clean the joint with rubbing alcohol, then let it dry completely. Overnight if the joint was wet. Caulk on damp surfaces is caulk you'll be removing next year.
- Tape both sides of the joint, gun a steady bead, tool it with a caulk tool or a soaped finger in one smooth pass, pull the tape while it's wet. That tape trick is the difference between amateur and showroom.
- Pro detail: fill the tub with water BEFORE caulking the tub-to-tile joint, let it sit while the caulk cures. You're caulking the joint at its widest, so the bead is never stretched in use.
- Keep everyone out of the shower for 24 hours. Silicone cures on its schedule, not yours.
Hire it out
$150–$350National fair range — local labor moves this number.
A handyman recaulk of a full tub surround runs $150–$350 and is money well spent if detail work isn't your idea of a Saturday. Judge the quote by one question: how much of the price is removal and prep? The right answer is "most of it."
Where this goes wrong is escalation — a failed caulk joint that's been leaking a while can look like a tile problem, and suddenly the quote is a $6,000 surround tear-out. Sometimes that's real. But the sequence should always be: recaulk properly, watch it a season, then talk demolition — not the reverse.
Ask the tech
- Are you removing all the old caulk first, or going over it? (Over it is the wrong answer.)
- Silicone or acrylic? For wet joints, why?
- The corner joints where wall meets tub — caulk or grout there, and why?
Red flags you're being upsold
- Caulk-over-caulk. New caulk on old caulk fails in months; anyone skipping removal is selling you the same job again next year.
- A regrout or full 'shower restoration' pitch ($1,500+) when the grout is sound and only the flexible joints have failed.
- Mold panic over ordinary mildewed caulk. Mildew ON caulk is cosmetic and universal; mold BEHIND a failed joint is exactly what the recaulk fixes.
Second opinion time: Any tile tear-out quote over $3,000 that began as a caulk complaint — failed joints mimic worse problems.
The call
DIY if you have the two hours and a steady hand — it's the most satisfying beginner job in the house. Hire it happily if you don't; even at $250 it's cheap insurance. Just never let anyone caulk over old caulk.