Most caulk we pull out in Irving was never meant to last where it was put. Builder-grade acrylic latex shows up all over Valley Ranch and Las Colinas homes from the 1980s and 1990s, usually at tub decks and shower pans. It shrinks, goes chalky and lets water track behind the bead. Caulking over old caulk is the most common shortcut we find, and it fails fast because new sealant can't bond to the slick, contaminated surface underneath. Real replacement means cutting out every bit of the old bead and removing silicone residue with solvent. We also kill any mold in the joint and let it dry completely before a new bead goes on. Skip any of those steps and the black spots come back within months.
Choosing the material matters as much as the technique. For wet change-of-plane joints, where tile meets a tub, a shower floor meets a wall, or a countertop meets a backsplash, we use 100% silicone or a high-quality hybrid sealant rated for continuous moisture. Those joints move, and grout or rigid caulk there will crack. Sanded caulk color-matched to your grout works well where appearance matters and movement is minimal. Silicone can't be painted, and it has to be fully removed before anything else will stick to that spot. If a previous owner used silicone and you want a different product, removal takes longer. We'll tell you that up front.
Irving's humid summers make the job harder in ways people don't expect. Showers rarely dry out fully between uses, so mildew gets into the caulk itself, not just onto the surface. Moisture in the joint also slows curing. That's why we ask you to keep the shower out of service for the full cure window, usually about 24 hours, depending on the product and how humid the room is. North Texas clay soil adds another problem. Foundations in Dallas County shift with wet and dry seasons, and that movement opens corner and tub joints. A bead that keeps splitting in the same corner can mean the joint needs a backer rod or a more flexible sealant, not just another tube of caulk.
Caulking vs. Grout: What Goes Where
Grout belongs in the flat joints between tiles on the same plane. Caulk belongs at inside corners, at changes of plane, and where tile meets a different material such as a tub, a pan, a countertop or a window frame. Many cracked shower corners we see in Downtown Irving and Grand Prairie are grouted corners that should have been caulked. They crack every year because the building moves. When we replace caulking, we check for this, and we'll recommend raking grout out of corners if it's the wrong material for the joint.
Making New Caulk Last
After showering, run a squeegee over the walls and leave the bathroom fan on for 20 to 30 minutes, especially from May through September. Skip bleach-heavy and abrasive cleaners on the bead. Mild pH-neutral cleaners keep silicone intact longer. Check corners twice a year. A small gap caught early can be spot-repaired before water reaches the substrate.
Technician insight
In Irving, the thing that catches most people out with caulking replacement is the corner that keeps cracking no matter how many times they recaulk it. With the clay soil around here, homes move between the wet spring and the dry late summer, and a thin bead of cheap acrylic, or grout packed into a corner, can't flex with that. Once I switch those joints to a proper silicone, with backer rod where the gap has opened up, the repeat cracking usually stops.
Recurring Black Mold on a Valley Ranch Tub
A homeowner in Valley Ranch had recaulked their tub surround several times, and the black spots kept coming back within a season. When we cut the bead out, we found three layers of caulk over the original builder acrylic, with mold growing between the layers and damp grout behind them. We removed every layer, treated and dried the joint, and resealed with mildew-resistant silicone. The bead has stayed clean, and the homeowner now runs the fan after showers.
Caulking Replacement Services We Offer
✓Shower Caulking Replacement
Full removal and reseal of corners, pan joints and door or curb edges, so water stays out of the wall cavity.
✓Bathtub Caulk Removal and Reseal
We strip the tub-to-tile line down to clean surfaces and reseal with mildew-resistant silicone that flexes as the tub loads and unloads.
✓Moldy Caulk Remediation
We treat black mold in and behind the joint before resealing, so the stains don't bleed back through new caulk.
✓Kitchen Backsplash and Countertop Caulking
We reseal the counter-to-backsplash seam and the sink perimeter with a color-matched bead that keeps spills from wicking under the counter.
✓Sink and Vanity Perimeter Caulking
Clean, tight beads around undermount and drop-in sinks and vanity tops to stop water damage to cabinets below.
✓Color-Matched Sanded Caulk
Sealant matched to your existing or newly colored grout, so movement joints blend in instead of standing out.
✓Rental and Turnover Caulking
Quick, tidy caulk replacement for rental units and apartments between tenants, so bathrooms look fresh and pass walkthroughs.
Caulking Replacement Cost in Texas
| Service | Typical Range | What Affects It |
|---|---|---|
| Single bathtub perimeter recaulk | $120–$250 | Higher if old silicone is layered or mold has gone deep into the joint |
| Walk-in shower full recaulk | $175–$400 | Depends on shower size, number of corners, glass curb edges and the amount of mold |
| Kitchen backsplash and sink seal | $100–$225 | Moves with seam length and whether there's an undermount sink |
| Bundled shower recaulk with grout cleaning | $300–$650 | Depends on square footage and the condition of the grout |
| Multi-bathroom or rental turnover | $250–$800 | Priced by the number of fixtures; bundling lowers the cost per room |
Ranges are typical for Texas and confirmed with an exact written quote before any work starts.
How it works
- 1
Inspect the Joints
We check every caulked joint for gaps, mold and adhesion, and look for signs of water behind the tile, such as soft spots or loose tiles, before we quote.
- 2
Cut Out and Strip
We remove the old caulk completely with blades and removal tools, then use solvent to clear silicone residue so the new bead bonds.
- 3
Clean, Treat and Dry
We clean the joints, treat any mold, and let them dry thoroughly, which takes extra attention in humid bathrooms.
- 4
Seal With the Right Product
We apply a continuous, properly sized bead of the right sealant for each joint, using backer rod where gaps are wide, then tool it smooth.
- 5
Cure Guidance
We tell you how long to keep water off the area and how to care for the new caulk so it lasts.
Pricing
Caulking replacement is usually priced by the area or fixture rather than by the hour. A single tub or shower is the most common job. Price goes up with heavy mold, stubborn old silicone, wide gaps that need backer rod, or several bathrooms. We give an upfront quote after we see the joints.