Waterproof Silicone Sealant, Neutral Cure Flexible Caulk for Windows, Bathroom, Tile, Glass & Metal, Indoor Outdoor Weatherproof | Lonoma
A Flexible Seal That Keeps Water Out
Gaps around tubs, windows, and door frames let in water, drafts, and trouble. This waterproof silicone sealant fills those joints with a flexible seal that stays soft after curing, so it moves with your home instead of cracking. The neutral cure formula grips glass, metal, tile, concrete, brick, mortar, and aluminum, and it handles temperatures from -58°F to 302°F. Use it indoors or outdoors to lay down a clean, weather-resistant bead that holds up against moisture and sunlight, whether you're touching up a bathroom or sealing an exterior joint.
Why You Need This
- Multi-Surface Grip: Bonds to glass, metal, masonry, tile, and more, often without a primer.
- Stays Flexible: Absorbs expansion, contraction, and vibration so the seal doesn't crack or pull away.
- Weather Protection: Resists moisture and UV exposure through every season, inside and out.
- Fast Curing: Sets quickly so you can finish a project and get a smooth joint without a long wait.
- Low Odor: The neutral cure formula is gentle on sensitive metals and gives off fewer harsh fumes while you work.
- Four Color Choices: Pick black, clear, gray, or white to blend the bead in with your surfaces.
Made For Everyday Repairs
From sealing a shower enclosure to weatherproofing an exterior door frame or patching a cracked masonry joint, this silicone sealant makes the job straightforward. With a tested adhesive strength of 138 psi, it keeps joints secure under everyday stress. Once cured, it forms a flexible, watertight barrier that blocks leaks and drafts and leaves a neat, finished look. Each tube arrives ready to use, so you can start as soon as you're prepped. Your order ships free within the US and comes with easy 30-day returns, so you can take on your next sealing project with confidence.
Free shipping on every order, with no minimum purchase.
Every order is carefully packed and shipped with full tracking, so you always know where your package is.
Order today and we'll ship it out the next business day.
Not quite right? You have 30 days to send it back, no questions asked.
We also back every product with a 2-year warranty against manufacturing defects, because we stand behind what we sell.
Choose options
Votre colis est déjà en préparation
Il porte votre nom. Chaque pièce est contrôlée une à une, protégée et calée à la main, puis la boîte se referme sur ce qui vous appartient déjà. Il ne lui reste plus qu'un trajet à faire : celui qui le mène jusque chez vous.
- Contrôlé pièce par pièce Vérifié avant l'emballage
- Emballé à la main Protégé et calé pour le transport
- Expédié avec suivi Suivi jusqu'à votre porte