Best Windshield Sealant - 7 Top Sealants Reviewed (2024)

Windshield sealant is a silicone glass sealer that flows into hidden cracks and areas that may be harder to reach. The sealant provides a tough, waterproof, durable, and clear seal that will prove to be resistant to different types of weather conditions, extreme temperatures, vibrations and shocks, and even most chemicals.

To test if you have a leak in your windshield you can do a water check with a spray bottle. Lightly spray the water and let it flow over the edge of the glass. If you have just replaced the windshield and the adhesive has not yet fully dried, then avoid getting water mixed into the adhesive. If you find an area where the water is leaking through, then apply more sealant to ensure that this no longer happens.

If you are looking for a window gasket rather than sealant, we have an article with some recommendations.

Permatex Flowable Silicone Windshield Glass and Sealer

Permatex can be used on windshields, sunroofs, windows, headlamp assemblies, marine glass, and other similar materials. It is designed to effortlessly flow in hidden and harder to reach areas. To provide a durable and waterproof seal that is resistant to weather and extreme temperatures. It dries clear and fills surface voids and irregularities.

Size: 1.5-ounce tube

Pros

Waterproof, durable, clear, easy to use

Cons

May require than one application, longer drying time, has a slight odor

Permatex 81730 Flowable Silicone Windshield and Glass Sealer, 1.5 oz.

Forms A Tough, Waterproof, Durable, Clear Seal
Resistant To Weather, Extreme Temperatures, Vibration, Shock And Most Shop Chemicals
Flows Into Hidden And Hard-To-Reach Areas To Seal Leaks

$8.25

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Last update on 2024-04-27 / Affiliate links / Images from Amazon Product Advertising API

Permatex Black Rubber Sealant

Black Rubber Sealant is a higher strength adhesive and may provide a stronger bond than silicone sealers. It is ready to use and insulates, seals, and caulks and can be used on almost every automotive sealing project. Including weather stripping and door and window glass.

Size: 1.5-ounce tube

Pros

Flexible, durable, waterproof, provides a good seal, dries fast, does not dry out or become brittle, ready to use

Cons

Does not dry clear, works better when applied in warmer temperatures

Permatex 80338 Black Rubber Sealant, 1.5 oz. Tube

High-strength, ready-to-use adhesive
Does not dry out or become brittle
Economical black sealant insulates, seals and caulks

$7.10

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Last update on 2024-04-27 / Affiliate links / Images from Amazon Product Advertising API

Eclectic Sealant-Seal All

Seal All Sealant is an all-purpose adhesive and sealant that dries quickly without sacrificing any durability or strength. It is safe to use for most every automobile repair project and is resistant to gas oil, water, and a lot of other solvents. You can go back and apply additional layers if needed and is the perfect sealant to use if you are on the go and need a quick fix. It only takes two to three minutes to dry, but a full cure will take between two and six hours.

Size: 2-ounce tubes, four pack

Pros

Fast drying, forms an immediate bond, can apply additional coats if needed, creates full contact, dries clear, waterproof

J-B Weld Clear All-Purpose Silicone Sealant and Adhesive

J-B Weld Sealant is a general all-purpose silicone sealant that can be used on windshields and windows to provide a tough, mold and mildew-resistant seal that sets in just one hour. After curing, the results will be a seal that will not shrink or crack, it resists weathering and is great for a variety of other automotive and even household applications. J-B Weld is a United States-based company and proudly backs their product. When they say it provides ‘the world’s strongest bond.

Size: 2-ounce tube

Pros

Dries clear works fast, mold and mildew-resistant, tough and durable, water resistant, will not crack or shrink

Cons

May be hard to apply, doesn’t flow even

J-B Weld 31310 All-Purpose RTV Silicone Sealant and Adhesive – 3 oz. – Clear

Clear Silicone Sealant & Adhesive: Is A General Purpose Sealant Adhesive, Rtv (Room Temperature Vulcanized)Silicone Designed For Use In Household…

$7.92

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Last update on 2024-04-27 / Affiliate links / Images from Amazon Product Advertising API

Devcon Premium Silicone Adhesive

Devcon Silicon Adhesive provides a clear seal that can be used on a variety of different materials including glass, metal, and plastic. It is great to use on windshields. And will form a tough, flexible, and waterproof seal that will resist aging and other forms of weathering. It takes around 10 to 15 minutes to apply, 30 minutes to set. And an additional 12 to 24-hour cure time to be sure that it has properly dried and set.

Size: 1.76-ounce tube

Pros

Weather and water resistant, tough, flexible, does not harden

Cons

Bad packaging with hard to open tube and easily-clogged nozzle

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Gorilla Silicone Sealant

Gorilla is a well-known brand and, most of the time is the first product someone can name while discussing adhesives. Gorilla Silicone Sealant is versatile and dries clear. It is ready for water exposure in just thirty minutes and is mold and mildew resistant. The sealant will not yellow or crack over time and is easy to use. Just be sure that the surface is clean and dry before application.

Size: 2.8-ounce tube

Pros

Easy to use, dries clear, does not become discolored, will not crack, versatile, and durable

Cons

Font on instructions is small, tube must remain tightly sealed to prevent continued curing, can be sticky

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Gorilla Waterproof Caulk & Seal100% Silicone Sealant, 2.8oz Squeeze Tube, Clear (Pack of 1)

SEALS OUT WATER, AIR & MOISTURE
30 MINUTE WATER READY
INDOOR/OUTDOOR: All Weather

$7.29

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Last update on 2024-04-27 / Affiliate links / Images from Amazon Product Advertising API

Titan P2G Auto Glass Sealant Windshield Urethane Glue-PrimelessAdhesive

Titan Auto Glass Sealant is a primeless and one-component sealer that is non-conductive, cold-applied, fast curing. And is made from high-velocity polyurethane that is designed for replacing automotive glass parts. It is best applied at room temperature. May require two tubes for most windshield installations.

Size: Unknown

Pros

Fast curing, non-conductive, dries quickly, high-velocity

Cons

Difficult to apply requires more than one tube

Titan P2G Auto Glass Sealant Windshield Urethane Glue Sika Primeless Adhesive

Primeless to glass
Cold-applied
Fast-curing

$16.95

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Last update on 2024-04-27 / Affiliate links / Images from Amazon Product Advertising API

No matter which sealant you choose, remember to weigh up the pros and cons of each. Sealants that dry clear are better suited for windshield applications. And Generally will not yellow or crack. Will provide a continuous seal and durable and versatile protection against water and leaks. Always store the sealant in a cool and dry place. Make sure that the lid is tightly closed. Avoid using sealants in enclosed areas because the fumes may be toxic. Finally, always allow the sealant to cure before driving the vehicle.