Best Caulk for Bathrooms (2026)
By Nate Sawyer, Editor · Updated July 2026
DIYPicks is reader-supported. As an Amazon Associate and affiliate of home-improvement retailers, we may earn a commission when you buy through links on our site — at no extra cost to you. This never affects our recommendations.
Bathrooms are the hardest test for any sealant because joints sit in constant moisture. For showers, tubs, and sinks, 100% silicone like GE Advanced Silicone 2 or Gorilla 100% Silicone gives true waterproofing and lifetime mold resistance, but silicone cannot be painted and smells strong while curing. A paintable acrylic-latex-plus-silicone such as DAP Alex Plus is easier to apply and paint but is only water-resistant, so it belongs on trim and less-wet gaps rather than a shower surround. Match the chemistry to how wet the joint really gets.
A 100% silicone kitchen-and-bath sealant that is permanently flexible and fully waterproof, with strong mold resistance for showers, tubs, and sinks. It is water-ready in about 30 minutes. Trade-offs: it cannot be painted, gives off a strong vinegar-like odor while curing, and tools less easily than latex caulk, cleaning up only with solvent.
- Shower
- Bathroom
- Kitchen
- Tub
- Sink
- Outdoor
Pros
- 100% waterproof and permanently flexible, making it ideal for showers, tubs, and sinks
- Strong mold and mildew resistance for a long service life in wet areas
- Ready for water exposure in about 30 minutes, so a shower can be used the same day
Cons
- Cannot be painted, so the caulk color you choose is the color you keep
- Strong vinegar-like acetoxy odor while curing that needs good ventilation
- Harder to tool and smooth than latex caulk, and mistakes clean up only with solvent
An acrylic-latex-plus-silicone caulk for interior trim, baseboard, windows, and drywall gaps. It paints in about 30 minutes, tools smoothly, and cleans up with soap and water, making it cheap and beginner-friendly. The limits: it is only water-resistant, not waterproof, so it is poor for wet shower joints, and it shrinks slightly on wide gaps.
- Trim
- Baseboard
- Windows
- Drywall
- Interior
- Paintable gaps
Pros
- Fully paintable within about 30 minutes with latex or oil-based paint, perfect for trim and molding
- Easy water cleanup and smooth tooling make it very beginner-friendly
- Inexpensive and widely available, so it is economical for whole-house sealing jobs
Cons
- Only water-resistant, not fully waterproof, so it is a poor choice for constantly wet shower joints
- Latex caulk shrinks slightly as it dries and may need a second bead on wide gaps
- Less durable and shorter-lived than 100% silicone in high-moisture or exterior exposure
A 100% silicone sealant built for the wettest bathroom joints - showers, tubs, and sinks. It is water-ready in about 30 minutes, carries lifetime mold and mildew resistance, and stays flexible without yellowing or cracking. Like all silicone it cannot be painted, so pick clear or a matching color, but for pure waterproofing it is a top choice.
- Showers
- Tubs
- Sinks
- Waterproofing
Pros
- 100% silicone is fully waterproof and water-ready in about 30 minutes
- Lifetime mold and mildew resistance for constant-moisture shower and tub joints
- Will not yellow, shrink, or crack and stays flexible on moving joints
Cons
- Silicone cannot be painted, so match the color to the fixture up front
- Strong acetic (vinegar) odor while curing; ventilate the bathroom
- Uncured silicone is messy and hard to tool cleanly for beginners
Still deciding? Compare them
Frequently Asked Questions
- Should I use silicone or latex caulk in a shower?
- Use 100% silicone like GE Advanced Silicone 2 or Gorilla 100% Silicone in a shower or tub. It is fully waterproof and stays flexible in constant moisture. Acrylic latex caulk is only water-resistant and can break down or grow mildew in a wet shower joint, so save it for painted trim and drier areas.
- How long before I can shower after caulking?
- It depends on the product. GE Advanced Silicone 2 and Gorilla 100% Silicone are water-ready in about 30 minutes, though full cure takes around 24 hours. To be safe, most manufacturers recommend waiting the full cure time before heavy water exposure whenever you can.
- Can you paint over silicone caulk?
- No. Paint will not stick to cured 100% silicone like GE Advanced or Gorilla Silicone, so choose clear or a color that matches the fixture up front. If you need a paintable joint, use a siliconized acrylic latex such as DAP Alex Plus, and save the pure silicone for wet shower and tub lines.