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Bathroom Re-Caulking

Bathroom re-caulking is the service that strips every failed bead at the tub, shower, vanity, and toilet base back to clean substrate, treats any visible substrate mildew, and lays a fresh 100% mildew-resistant silicone bead with a 24 to 48-hour water cure — starting at $180 per area. The dark line of mildew along the tub-to-tile seam, the bead that pulled away from the wall at one corner of the alcove, the gap behind the vanity that smells faintly damp every morning — bathroom caulk is the first thing in a bathroom to fail and the last thing most homeowners get around to fixing. Handis strips every old bead to clean substrate (silicone does not bond to silicone), treats visible mildew on the surface with a real disinfectant on the full dwell time, dries everything down, and lays a fresh bead of 100% mildew-resistant silicone. Most master baths finish in 90 minutes.

Bathroom re-caulking image — close-up of a freshly tooled white silicone bead running clean along a tub-to-tile seam in a master bathroom, no mildew, the substrate dry and uniformly white.

Service

Photo of a bathroom re-caulking job mid-tool — fresh white silicone bead being shaped concave along the tub-to-wall seam with a plastic caulk-shaping tool, caulk gun and utility blades visible on a folded towel on the floor.
Process

How Bathroom Re-Caulking Works

Six sequential steps from full strip of the old bead to the printed cure-time notice on the bathroom door — the actual sequence we follow on every bathroom re-caulk.

Step 1/6

Strip Every Old Bead to Clean Substrate

Silicone does not bond to silicone — manufacturer technical data sheets are explicit. Strip every joint with a utility blade plus a silicone-specific solvent (3M Caulk Remover or McKanica), then wipe with denatured alcohol. The strip-and-prep step takes longer than the application.

Step 2/6

Treat Visible Mildew with Quaternary Ammonium

Visible mildew on the substrate under a failed bead does not disappear when you cover it — it grows back through. Treat with a hospital-grade quaternary ammonium cleaner on the full ten-minute label dwell. Bleach alone fades the stain but does not kill the organism in the porous substrate.

Step 3/6

Dry the Substrate Down

Rinse the disinfectant residue, then dry with a heat gun on low or a microfiber towel until the surface reads dry to a moisture meter. Fresh silicone laid on a damp substrate fails inside weeks because the moisture under the bead prevents full adhesion.

Step 4/6

Lay 100% Mildew-Resistant Silicone

Tub, shower, vanity, and toilet base get 100% silicone (GE Supreme Kitchen & Bath or DAP Kwik Seal Ultra) — mildew-resistant by design, rated for permanent immersion. Standard latex caulk molds and shrinks inside a year in any wet location.

Step 5/6

Dry-Tool with a Caulk-Shaping Tool

Pull a Cramer profile tool or Hyde plastic shaper once across each bead in a single motion. The cured surface ends concave, fully adhered, and crack-free. Wet-finger-and-dish-soap tooling leaves a hairline crack down the centerline as the bead cures.

Step 6/6

Leave the Cure-Time Notice on the Door

100% silicone needs 24 to 48 hours before water exposure depending on humidity. A yellow sticky note on the bathroom door records the finish time and the earliest safe-shower time so no houseguest or teenager runs the shower at hour 12 and ruins the bead.

Pricing

Bathroom Re-Caulking Pricing

Final pricing depends on linear footage, how aggressive the old-bead removal needs to be, and whether mildew on the substrate has to be killed and dried before fresh sealant goes on. Request a free estimate for an accurate quote.

Send us the bathroom — tub, shower, vanity — and we will quote the full re-caulk.

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Why Handis for Bathroom Re-Caulking
Trust

Why Handis for Bathroom Re-Caulking

Most bathroom caulking failures we redo are six to twelve months old — a DIY job, a contractor on the last day of a remodel who ran out of time, or a previous service tech who skipped the strip-and-prep step. The fresh bead looked perfect the day it was laid. Then water got behind it because the old residue was still there, or the mildew on the substrate grew through, or the latex caulk in the box was the wrong chemistry for a tub. The strip is 70% of the job and the part everyone wants to skip. We do not skip it.

Estimate

Tell us which seams (tub, shower walls, vanity, toilet), whether there is visible mildew, and roughly how old the existing bead is — we will quote it.

Service cost estimate illustration
Reviews

Customer Reviews

Bathroom re-caulking reviews from real Handis customers.

Master bath alcove tub. The original caulk had gone black in two corners and was lifting at one edge. The tech stripped the whole perimeter with a utility blade and a solvent, treated the mildew, waited the full dwell time, then ran a clean white silicone bead. Showed me the cure-time sticky note on the door. 90 minutes start to finish.

Patricia G., Master Bath Re-Caulk

We had tried this ourselves a year ago — the new bead came right off six months later. The Handis tech showed me a small jar of the residue he scraped out and explained that silicone will not stick to silicone. Did the strip properly, treated the mildew. Six months in, nothing has moved.

Edwin and Jessica L., Re-Do of Failed DIY Caulk

Walk-in shower, the wall-to-pan seam had cracked at the corner and we were getting a damp spot in the closet behind it. The tech stripped the entire vertical and horizontal seams, killed the mildew, ran the new bead. The damp spot stopped that week. He also pointed out that the grout in two spots needed touch-up later.

Frank B., Walk-In Shower Re-Seal

Two bathrooms in one visit. Master tub plus hall bath tub plus vanity seams in both. The tech worked through them in order so the cure timing did not stack up. Painted note left on each bathroom door. Two bathrooms, two and a half hours, one cleanup.

Joanne T., Two-Bathroom Combo

1950s tile bath. The grout was original and the caulk between the tile and the cast-iron tub had been redone at least twice without the old stuff being removed. Tech got every layer out, treated some mildew at one corner, ran a fresh bead. Looked like it did the day the bathroom was built.

Marcus T., Vintage Tile Bath
FAQ

Frequently Asked Questions

Common questions about bathroom re-caulking.

How much does bathroom re-caulking cost?
A tub-to-tile perimeter alone starts at $180. A walk-in shower perimeter (walls plus the wall-to-pan seam) starts at $220. A vanity and backsplash seam starts at $180. A toilet base seal is $180. Tub plus vanity in the same bathroom is $300. A whole-master-bath re-caulk (tub or shower plus vanity plus toilet base) is $400. Two bathrooms in one visit is $500. Mildew remediation on the substrate adds $60. You get a clear estimate before any stripping starts.
Why does new caulk fail when I do it myself?
Three failure modes account for almost every DIY bathroom caulking job that fails inside twelve months. First, the old bead was not fully stripped — silicone does not bond to silicone, so the fresh bead lifts inside two months. Second, the wrong product was used (standard latex caulk in a wet area molds and cracks within months). Third, the bead was tooled with a wet finger and dish soap that left a hairline crack down the centerline as it cured. Strip the old bead completely, use 100% silicone, tool dry.
Do you really need to wait 48 hours before showering?
100% silicone needs 24 to 48 hours before water exposure depending on humidity. Master baths in Seattle in winter — where the room never drops below 50% humidity overnight — need the full 48. Smaller half-baths with good ventilation can be safe at 24. We tell you the specific cure window on the call and leave a printed note on the bathroom door so no one in the house runs the shower at hour 12 and ruins the bead.
Why does the toilet base get caulked on three sides instead of four?
The International Plumbing Code (IPC §405.5) calls for a watertight seal between the toilet base and the floor, but the rear quarter is intentionally left open so that any leak from the wax ring underneath is visible at the floor instead of trapped inside a sealed perimeter. A trapped leak rots the subfloor invisibly for years. We follow code — front and both sides sealed, rear small section left open.
Can you match the caulk color to my tile or counter?
Yes. The truck carries silicone in white, almond, clear, biscuit, bronze, and black. For unusual tile colors we pick the closest stock match. Default for white tile is pure white; for off-white tile (alabaster, cream, ivory) we use almond or clear because pure white against off-white reads as a band of mismatched color. Tell us the tile or fixture color on the booking call.
What if the substrate behind the caulk is damaged?
We tell you on arrival. If the drywall behind a tub is soft, the MDF baseboard is swollen, the tile backer board has delaminated, or there is visible water staining on the wall outside the bathroom, that crosses into drywall, tile, or carpentry work. Fresh caulk over a damaged substrate is a temporary cover — the joint fails again inside months because the wall behind it is moving. We are honest about this on the call before we start.
Do you remove just the mildewed sections or the whole bead?
The whole bead. Caulking is a continuous joint — stripping only the visible-mildew section leaves an old/new seam at the transition that fails inside weeks. The mildew also extends in the substrate past where it is visible on the surface. The strip is 70% of the job time; doing it halfway costs twice as much in twelve months when the new section pulls.
Will the smell of the caulk linger?
100% silicone has a sharp acetic-acid (vinegar) smell as it cures — strong for the first 4 to 6 hours, mostly gone by 24. We ventilate the bathroom with the exhaust fan during application and open a window if weather allows. The smell is non-toxic; it just signals that the bead is curing. Low-VOC neutral-cure silicone is available on request for chemically sensitive households (a $30 add-on for the upgraded product).
How long does a bathroom re-caulking visit take?
A tub alcove perimeter alone takes 60 to 90 minutes — about 40 minutes for stripping and prep, 20 minutes for laying and tooling, 10 minutes for cleanup. A walk-in shower with the wall-to-pan seam runs 90 minutes to two hours. A whole master bath (tub or shower, vanity, toilet base) is two to three hours. Mildew remediation on the substrate adds 20 to 30 minutes for the dwell time and dry-down.
Is the work guaranteed?
Yes. 30-day workmanship guarantee — if the bead pulls, cracks, separates from the substrate, or molds within 30 days because of our workmanship or prep, we come back and redo it at no extra charge. The guarantee covers our installation. It does not cover damage from a leak behind the wall that wets the new bead from inside, a tile that came loose later, or scrubbing the bead with an abrasive pad and a bleach gel. We will tell you on arrival if we see anything that looks like a future problem.
Can I add kitchen or exterior caulking to the same visit?
Yes — and this is the cheapest way to book it. Bath plus kitchen counter plus two exterior windows is one truck, one trip charge, one cleanup. Tell us every area on the booking call. The whole-visit estimate is cheaper than booking each area separately, and the truck shows up loaded with the right chemistry for each joint — silicone for the wet seams, polyurethane for the exterior weather joints, paintable acrylic if any trim work is in scope.

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