If the caulk around your bathtub or shower is cracked, peeling, discolored, or just plain tired-looking, it may be time for a refresh. The good news? Re-caulking a bathtub or shower is one of those home maintenance projects that can make a surprisingly big difference without requiring a full bathroom remodel.
Fresh caulk gives your bathroom a cleaner appearance and, more importantly, helps keep water from getting behind walls, trim, and other areas where it can cause expensive damage.
Here’s how to tackle the job.
What You’ll Need
Before getting started, gather a few basic supplies:
- A utility knife or caulk removal tool
- A putty knife or plastic scraper
- Bathroom-grade, mold-resistant silicone caulk
- A caulk gun
- Rubbing alcohol or an appropriate surface cleaner
- Clean rags or paper towels
- Painter’s tape
- A small cup or spray bottle of water
Choose a caulk specifically designed for bathrooms. Silicone or silicone-based products generally provide good water resistance and flexibility, which are important around tubs and showers.
Step 1: Remove the Old Caulk
This is the part that takes a little patience. Don’t simply put new caulk over the old stuff.
Use a utility knife or caulk removal tool to carefully cut along both edges of the existing caulk. Work slowly so you don’t scratch the tub, shower surround, tile, or other finished surfaces.
Once you’ve loosened the old bead, pull it away and use a scraper to remove any remaining pieces.
If the old caulk is moldy or has stubborn residue, take your time getting the area as clean as possible. A clean surface gives your new caulk a much better chance of sticking properly.
Step 2: Clean and Dry the Area
After removing the old caulk, clean the joint thoroughly. Rubbing alcohol can help remove leftover residue, but always follow the recommendations on your caulk manufacturer’s packaging.
This step is especially important in a shower or bathtub because moisture is the enemy of a good caulk job.
Give the area plenty of time to dry completely. If you’ve recently used the shower, it may be worth waiting until the next day before applying the new caulk.
Step 3: Apply Painter’s Tape
If you want clean, professional-looking lines, painter’s tape can be your best friend.
Place strips of tape along both sides of the joint, leaving the width of your desired caulk bead exposed. This helps keep excess caulk off your tile and tub and makes cleanup much easier.
You don’t necessarily have to use tape if you’re comfortable applying caulk freehand, but it can make the project much less intimidating for beginners.
Step 4: Apply the New Caulk
Cut the tip of your caulk tube at approximately a 45-degree angle. Start with a relatively small opening – you can always make the bead larger if needed.
Load the tube into your caulk gun and apply a steady bead along the joint. Try to keep consistent pressure on the trigger and move at a steady pace.
Don’t worry if it isn’t perfect at first. You can smooth it out in the next step.
Step 5: Smooth the Caulk
Using a damp finger or a caulk-smoothing tool, gently smooth the bead in one continuous motion.
The goal is to create a smooth, slightly concave line that completely seals the joint. Wipe away excess caulk as you go.
If you used painter’s tape, remove it carefully while the caulk is still wet. Pull the tape away at an angle rather than straight up.
Step 6: Let It Cure
This is where a little patience pays off.
Follow the manufacturer’s instructions for curing time before getting the tub or shower wet. Depending on the product, this can take anywhere from several hours to a couple of days.
Avoid the temptation to take a shower “just this once.” Giving the caulk enough time to cure properly can make the difference between a repair that lasts and one that needs to be redone.
When Should You Re-Caulk Your Bathroom?
There’s no strict schedule for re-caulking. Instead, keep an eye out for warning signs such as cracking, peeling, gaps, mold that won’t clean away, or areas where the caulk has pulled away from the tub or tile.
If you notice soft drywall, staining, a persistent musty smell, or signs of water damage, don’t just cover the problem with new caulk. There could be a larger issue behind the surface that needs to be addressed first.
Need Help With a Bathroom Project?
Re-caulking is a manageable DIY project, but not every bathroom repair is quite so simple. If your bathtub or shower needs more extensive repairs, tile work, plumbing, or remodeling, a professional can help determine what needs to be done.
Damian’s helps homeowners throughout the West Valley, including Surprise, Sun City, El Mirage, Waddell, Avondale, Goodyear, Buckeye, Peoria, and Glendale. From small home repairs to bathroom remodeling, the goal is simple: quality work that helps you enjoy your home again.
A little fresh caulk can go a long way but when your bathroom needs more than a touch-up, it may be time to call in the pros.