Tools and Materials
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Steps for Caulking a Shower
Here are the steps you’ll need to follow to apply caulk in a shower.
Step 1: Remove the Old Caulk
Start by cutting away any old cracked or moldy caulk using a utility knife or caulk removal tool. Be sure to clear it out completely so the new caulk can bond properly. Follow the manufacturer’s instructions on any caulk removal products exactly, including wearing the appropriate safety gear.
Step 2: Clean and Dry the Area
Clean between the shower wall joints with caulk removal solution to remove soap residue and mildew. Let the area dry fully before applying new caulk.
Step 3: Tape the Edges
Apply painter’s tape along both sides of the joint. This helps create straight clean lines and makes cleanup easier.
Step 4: Apply the Caulk
Cut the tip of the caulk tube at a 45-degree angle and load it into the caulk gun. Apply steady pressure and run a smooth continuous bead along the seam. For a demonstration, see our short DIY Basics video.
Step 5: Smooth the Lines
Use a caulk smoothing tool to press the caulk into the joint and smooth the surface. Remove the tape right away while the caulk is still wet.
Step 6: Allow the Caulk to Cure
Allow the caulk to cure according to the manufacturer’s instructions, which will vary based on the product. Avoid using the shower until the caulk is fully cured.
Ready to Start Your Project?
A properly caulked shower helps prevent water damage and keeps your bathroom looking its best. For a successful and rewarding DIY project, you’ll need the right tools and supplies. Here are the product categories Lowe’s customers depend on for their caulking projects.
Key Takeaways: How to Caulk a Shower
- Caulking a shower helps prevent water damage and gives the space a clean finished look.
- Essential tools include a caulk gun, utility knife and caulk removal tool.
- Key materials are silicone kitchen and bathroom caulk, painter’s tape, caulk remover solution and cleaning rags.
- Old cracked or moldy caulk should be fully removed so new caulk can bond properly.
- Shower joints must be thoroughly cleaned and completely dry before applying new caulk.
- Painter’s tape helps create straight lines and makes cleanup easier.
- Caulk should be applied in a smooth continuous bead using steady pressure.
- Smoothing the caulk while it’s wet ensures a clean professional-looking finish.
- Caulk must fully cure before using the shower to ensure long-lasting results.
FAQ: How to Caulk a Shower
Here are some questions customers frequently have when planning for a caulking project of their own.
Why Is It Important to Caulk a Shower?
Caulking a shower prevents water from seeping into wall joints which helps avoid mold growth, mildew and long-term water damage.
How Often Should You Caulk a Shower?
Most showers should be recaulked every one to two years or sooner if the caulk is cracking, peeling or showing signs of mold.
What Type of Caulk Is Best for a Shower?
Silicone kitchen and bathroom caulk is best because it’s waterproof, flexible and resistant to mold and mildew.
Do You Need to Remove Old Caulk Before Applying New Caulk?
Yes. Removing old caulk ensures the new caulk bonds properly and creates a watertight seal.
Can You Caulk a Shower While It’s Wet?
No. The area must be completely dry or the caulk may not adhere properly.