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Please note: Product availability and information are based on our research at time of writing and are subject to change. Always check Amazon for the latest details before purchasing. Our assessments are research-based. We compared manufacturer technical data sheets and official product pages, and we have not tested these products hands-on. Always follow the current instructions on your product’s label.

Introduction

Choosing bathroom caulk comes down to a handful of questions. What is the joint made of? How much does it move? How do you want to apply it? Do you need to paint it? And how soon will it get wet? The five products below answer those questions differently. Three are 100% silicone sealants, one is an acrylic latex caulk, and one is a non-silicone elastic sealant.

For each one we used the manufacturer’s own data sheet, so you can see what the maker documents and what it doesn’t. None of them is right for every joint or every material. This review is about choosing the product; for application steps, see our guide on how to caulk a bathtub.

✏️ Our Take

For most tub and shower joints, GE Advanced Silicone 2 is the easiest place to start: its data sheet documents a broad range of bathroom surfaces, and the squeeze tube needs no caulk gun. We label it Best Overall as our research-based editorial judgment, not as the result of hands-on testing. Step up to GE Supreme if the joint flexes more. Choose DAP Kwik Seal if you want to paint the bead or prefer soap-and-water cleanup, and Lexel if you want a clear, paintable sealant that the maker says bonds to damp surfaces. Gorilla is a solid alternative silicone with a large cartridge. Read the limits in each section before you buy, and keep in mind that no caulk fixes a tub that isn’t properly supported.

IN THIS GUIDE

Quick Comparison

Product Best for Type Water-ready (maker’s statement) Paintable
GE Advanced Silicone 2 (White, 2.8 fl oz tube) BEST OVERALL First-time tub or shower recaulk 100% silicone 30 minutes under stated conditions, otherwise 8 hours No
GE Supreme Silicone (Clear, 10.1 fl oz cartridge) Joints that see more movement 100% silicone 30 minutes under stated conditions, otherwise 8 hours No
Gorilla 100% Silicone (White, 10 oz cartridge) Alternative silicone, larger jobs 100% silicone 30 minutes under stated conditions, otherwise 24 hours No
DAP Kwik Seal Kitchen & Bath (White, six-pack of 5.5 oz tubes) Painting the bead, water cleanup Acrylic latex 24 hours Yes
Sashco Lexel (Clear, 5 oz squeeze tube) Clear finish, damp surfaces Non-silicone elastic sealant “Instantly waterproof” per Sashco; 1 week to full cure Yes

Full Reviews

1. GE Advanced Silicone 2 Kitchen & Bath Sealant (White, 2.8 fl oz Tube) — Best Overall

Best Overall

GE Advanced Silicone 2 is a 100% silicone, neutral-cure sealant, and its data sheet documents a broad range of bathroom surfaces, including fiberglass, cultured marble, natural stone, ceramic and porcelain tile, and metal finishes such as chrome and nickel. It carries an ASTM C920 Class 35 movement rating.

It comes as a squeeze tube that works without a caulk gun, which makes a first tub recaulk simpler, and as a cartridge for a gun. GE says it is water-ready in 30 minutes only if the bead is 3/16 inch or smaller, the room is at least 65°F and humidity is at least 50 percent. Otherwise allow 8 hours, and don’t touch or clean the bead for 24 hours or until it has cured. Full cure is 24 hours under GE’s test conditions. GE advertises 10-year mold-free protection for the cured sealant and notes that regular cleaning is still required, because soap residue can cause secondary growth. One tube covers roughly 13 feet at a 3/16-inch bead, per the data sheet.

★ Top Pick ★★★★★

GE

GE Advanced Silicone 2 Kitchen & Bath Sealant (White, 2.8 fl oz Tube)

Best for: First-time tub or shower recaulk

In Stock

A 100% silicone sealant in a squeeze tube that needs no caulk gun, documented for a broad range of bathroom surfaces.

Check Price

on Amazon · $

Pros and Cons ▾ tap to expand

Last updated: 2026-10-04

2. GE Supreme Silicone Kitchen & Bath Sealant (Clear, 10.1 fl oz Cartridge) — Higher Movement Rating

Higher Movement Rating

GE Supreme is the same brand and chemistry as GE Advanced, with one documented step up: a Class 50 movement rating. ASTM C920 classes describe how much joint movement a sealant is rated to accept. GE’s sheets rate Supreme Class 50 and Advanced Class 35, and describe Supreme as 100 percent more flexible than a Class 25 sealant, against 40 percent for Advanced. Supreme also carries a lifetime mold-free product protection claim, compared with 10 years for Advanced, with the same note that regular cleaning is required.

That can matter on a joint that flexes with temperature changes or light daily use. It is not a repair for a tub that moves because it isn’t properly supported; that is a structural problem, and sealant only covers the joint. The named surfaces match Advanced’s list with Formica added, and the water-ready conditions are the same: 30 minutes only under GE’s stated bead size, temperature and humidity, otherwise 8 hours. The version we reviewed is a clear cartridge, so you need a caulk gun. One cartridge covers roughly 51 feet at a 3/16-inch bead, per the data sheet.

★★★★★

GE

GE Supreme Silicone Kitchen & Bath Sealant (Clear, 10.1 fl oz Cartridge)

Best for: Joints that see more movement

In Stock

The same GE silicone chemistry as Advanced, in a clear cartridge with a documented Class 50 movement rating.

Check Price

on Amazon · $

Pros and Cons ▾ tap to expand

Last updated: 2026-10-04

3. Gorilla 100% Silicone Sealant (White, 10 oz Cartridge) — Alternative Silicone Option

Alternative Silicone Option

Gorilla 100% Silicone Sealant is a general-purpose silicone with a Class 35 movement rating, sold here as a 10 oz white cartridge. Gorilla’s page lists kitchen, bath, window, door, plumbing, gutter, auto and marine uses, but it doesn’t name specific bathroom surfaces, so check your material against the label. Gorilla says not to use it on wet, damp, frozen or contaminated surfaces, brick, masonry, cementitious materials, brass or galvanized metals.

Gorilla says the White version is water-ready in 30 minutes only for a 3/16-inch bead at 70°F and 50 percent humidity; otherwise wait 24 hours, which is longer than GE’s 8-hour fallback. A full-cure time and coverage are not stated on the page. The cured sealant is described as mold and mildew resistant, with no duration given. Gorilla recommends applying it above 40°F, using backer rod for joints wider than 1/2 inch, and wiping uncured sealant with a dry cloth, with isopropyl alcohol allowed.

★★★★★

GORILLA

Gorilla 100% Silicone Sealant (White, 10 oz Cartridge)

Best for: Alternative silicone, larger jobs

In Stock

A general-purpose 100% silicone in a 10 oz white cartridge, with documented water-ready conditions but no bathroom surfaces named.

Check Price

on Amazon · $

Pros and Cons ▾ tap to expand

Last updated: 2026-10-04

4. DAP Kwik Seal Kitchen & Bath Adhesive Caulk (White, Item 18001, Six-Pack of 5.5 oz Tubes) — Paintable, Water Cleanup

Paintable, Water Cleanup

DAP Kwik Seal Kitchen & Bath is an acrylic latex copolymer caulk, not a silicone, and it is the paintable, soap-and-water option here. DAP’s data sheet lists tubs, showers, sinks, backsplashes, vanities, countertops, fixtures, pipes and loose tiles among its uses, and names wood, ceramic, porcelain, glass, most metals, most plastics, drywall, plaster, brick and stone as surfaces. It does not name fiberglass or acrylic.

DAP states it is water-ready after 24 hours, paint-ready after 2 hours, and fully dry-through in 24 hours. It is tack-free in about 30 minutes, suited to joints no larger than 3/8 inch wide and deep, applied above 40°F, and rated for -20°F to 150°F in service. Cured caulk is described as mold and mildew resistant, and it is not for continuous underwater use. Each 5.5 oz tube covers roughly 30 feet at a 3/16-inch bead. A movement rating is not stated. The link here is for a six-pack of 5.5 oz tubes; DAP also sells single tubes. Follow the current instructions on your tube’s label.

★★★★★

DAP

DAP Kwik Seal Kitchen & Bath Adhesive Caulk (White, Item 18001, Six-Pack of 5.5 oz Tubes)

Best for: Painting the bead, water cleanup

In Stock

A paintable, soap-and-water acrylic latex caulk, linked here as a six-pack of 5.5 oz tubes.

Check Price

on Amazon (6-Pack of 5.5 oz Tubes) · $$

Pros and Cons ▾ tap to expand

Last updated: 2026-10-04

This link is for a pack of six 5.5 oz tubes.

5. Sashco Lexel Clear Sealant (5 oz Squeeze Tube) — Damp-Surface Bonding

Damp-Surface Bonding

Sashco Lexel is a clear, paintable, non-silicone elastic sealant. Sashco says it can be applied to wet or dry surfaces, and its data sheet lists fiberglass, acrylic sheet, tile, porcelain, PVC and ABS, with a test patch advised. That compatibility is documented for acrylic sheet; it does not cover every acrylic tub or shower finish, so check the fixture manufacturer’s requirements as well as Sashco’s. Lexel lists poor adhesion on cultured marble, silicone, polyethylene and polypropylene, so old silicone has to be removed first.

Sashco calls Lexel “instantly waterproof” but gives one week to full cure. It is paintable with latex paint after 24 to 48 hours, or oil-based paint after three to four weeks. Use a bead of at least 1/4 inch, apply between 0°F and 120°F, and ventilate the room, since cleanup of tools needs mineral spirits or paint thinner and the solvent odor is noticeable. Sashco’s data sheet makes no mold-resistance claim. It says not to use Lexel for prolonged immersion, and it can dissolve polystyrene foam insulation. A 5 oz tube covers roughly 15 feet at a 1/4-inch bead. Sashco’s test data covers the cartridge, so we haven’t cited movement figures for this tube. Sashco’s data sheet notes that this clear squeeze tube is not sold in California, so check availability for your state.

★★★★★

Sashco

Sashco Lexel Clear Sealant (5 oz Squeeze Tube)

Best for: Clear finish, damp surfaces

In Stock

A clear, paintable, non-silicone sealant that Sashco says bonds to wet or dry surfaces.

Check Price

on Amazon · $

Pros and Cons ▾ tap to expand

Last updated: 2026-10-04

How to Choose Bathroom Caulk

Start With the Surface

Compatibility is the first filter, and the makers don’t agree. GE names fiberglass, cultured marble and natural stone. Lexel names fiberglass and acrylic sheet but lists poor adhesion on cultured marble. DAP and Gorilla name neither fiberglass nor acrylic. Acrylic tubs and shower pans vary, so check the fixture manufacturer’s caulking and care requirements as well as the sealant’s label. Check what your product’s label says about your material, and don’t assume any caulk works everywhere.

Four questions that decide bathroom caulk: surface, joint movement, painting and timing.

Silicone, Acrylic Latex or Elastic Sealant

Three of these are silicone, and the GE and Gorilla sheets list them as not paintable. DAP is acrylic latex, with soap-and-water cleanup and a short wait before painting. Lexel is neither: a non-silicone elastic sealant that dries clear, takes paint, and needs solvent cleanup.

Joint Size and Movement

Check how wide and deep your joint is. DAP limits joints to 3/8 inch, Gorilla calls for backer rod beyond 1/2 inch, and Lexel specifies a minimum 1/4-inch bead. If your joint moves, GE Supreme’s Class 50 rating is the higher documented figure, but a joint that moves a lot may point to a support problem that caulk can’t solve.

Squeeze Tube or Cartridge

A squeeze tube, like GE Advanced’s, works without a caulk gun and suits a single tub. A cartridge needs a gun but covers more joints per unit. DAP and Lexel come as tubes, and Gorilla and GE Supreme are cartridges on the listings we reviewed.

Water-Ready Time and Full Cure

The makers’ water-ready times depend on conditions. GE gives 30 minutes only for a bead of 3/16 inch or less, at least 65°F and 50 percent humidity, otherwise 8 hours. Gorilla gives 30 minutes only at 3/16 inch, 70°F and 50 percent humidity, otherwise 24 hours. DAP says 24 hours. Water-ready time and full cure are separate specifications, and they may differ. Full cure is 24 hours for GE and DAP, one week for Lexel, and not stated for Gorilla. DAP’s stated water-ready and dry-through times are both 24 hours.

What Mold-Resistant Claims Mean

These are manufacturers’ claims about the cured sealant resisting stain-causing mold and mildew. GE’s sheets say regular cleaning is still required, since soap residue can cause secondary growth. Sashco makes no such claim on the Lexel data sheet. Treat mold claims as one factor, not a guarantee.

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Frequently Asked Questions

Q: Can I use these caulks under a shower door track or for constant water contact?

Read the limits. GE says its sealants are not for continuous water contact or underwater use, and not for under shower door tracks. DAP says not for continuous underwater use, Gorilla says not for underwater use, and Sashco says not for prolonged immersion.

Q: How long before I can shower?

It depends on the product and conditions. GE and Gorilla give 30 minutes only under their stated bead size, temperature and humidity, otherwise 8 and 24 hours. DAP says 24 hours. Sashco calls Lexel instantly waterproof but gives one week to full cure. Follow your product’s label.

Q: Can I paint over it?

Only DAP and Lexel are documented as paintable. DAP is paint-ready after 2 hours. Lexel takes latex paint after 24 to 48 hours and oil-based paint after three to four weeks. GE and Gorilla silicones are not paintable.

Q: Does mold-resistant mean mold can’t grow on it?

No. The claims describe the cured sealant resisting stain-causing mold and mildew, and GE says regular cleaning is still required. Cleaning the bead regularly matters whichever product you pick.

Conclusion

Pick by surface and joint first, then by application and timing. GE Advanced Silicone 2 is the simplest starting point for most tubs and showers, GE Supreme adds a higher documented movement rating, and Gorilla is a solid silicone alternative if you’ve checked your surface against its label. DAP Kwik Seal suits painted joints and water cleanup within its limits, and Lexel suits clear, paintable work on fiberglass, acrylic sheet or damp surfaces if you can handle solvent cleanup. For preparation and application, see our guide on how to caulk a bathtub.

Manufacturer Sources

The specifications in this review come from these manufacturer documents and pages:

✍️ About This Review

Reviewed by James Carter, Senior Tool Reviewer at PlumbingToolsReview — 15 years of hands-on experience in residential plumbing and tool testing. For this Review, the product specifications are sourced from manufacturer data sheets and official product pages, as noted above. Learn how we test →

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