Calvana Urethane Windshield Adhesive 310ml Black — Polyurethane Sealant, Fast Moisture-Curing

Calvana Urethane Windshield Adhesive is a 310ml automotive-grade polyurethane sealant kit built for fast, weather-resistant bonding and chip or crack repair on windshields and vehicle glass.

This kit includes a 310ml cartridge of black urethane adhesive, a windshield primer, nitrile gloves, two applicator sticks, and applicator tips—everything needed to reseal glass to frame joints or perform professional-grade chip and crack repairs. The formula cures by moisture, resists sagging at angles, and bonds to uncoated, primed, or painted metal and glass, so it works for windshields, sunroofs, headlights, taillights, and windows across many vehicle types.

How quickly does Calvana urethane adhesive cure and when can I drive the vehicle?

The adhesive features a rapid-curing polyurethane that develops handling strength quickly while continuing to fully cure over time. Initial tack and gap filling are achieved within a short period, but full strength depends on ambient humidity and temperature.

• Develops handling strength faster than many solvent-based sealants
• Cures by moisture—warmer, more humid conditions accelerate cure
• Follow vehicle-specific wait times before driving as recommended for safety

Will this sealant hold in extreme weather and resist vibration?

Yes—Calvana’s urethane is formulated to withstand temperature swings, humidity, UV exposure, and the vibration and wind loads experienced during highway driving. The cured bead remains flexible to absorb impacts and prevent gap reopening.

• Moisture-curing chemistry resists heat, cold, and car wash exposure
• Flexible cured bond reduces stress on glass-to-frame joints
• Designed to perform on both interior and exterior vehicle surfaces

What surfaces and repairs is this adhesive suitable for?

This polyurethane sealant bonds well to uncoated glass and many vehicle metals whether primed or painted, making it a versatile choice for windshields, rear glass, sunroofs, lights, doors, and trim repairs. It’s compatible with both manual and electric caulking guns for professional or DIY use.

• Works on windshields, headlights, taillights, windows, sunroofs, and convertible fittings
• Adheres to uncoated glass and primed or painted metal surfaces
• Supplied in a 310ml cartridge compatible with standard caulking guns

What comes in the Calvana repair kit and how do I prepare surfaces?

The kit ships with the 310ml urethane cartridge, one windshield primer, an applicator tip, two 5.9" applicator sticks, and a pair of nitrile gloves for safe handling. Proper surface preparation—clean, dry, and primed where required—ensures the best bond and long-term performance.

• Kit contents: 310ml urethane cartridge, primer bottle, applicator tip, 2 sticks, nitrile gloves
• Clean and remove old sealant or contaminants before applying primer
• Use primer within six months of opening for optimal results

Who is this for: Calvana Urethane Windshield Adhesive is aimed at automotive glass technicians, body shop professionals, RV and marine repair specialists, and DIY vehicle owners who need a durable, weather-resistant polyurethane sealant. It suits anyone who needs a high-adhesion, non-sagging adhesive for glass-to-frame bonding, chip and crack stabilization, or sealing exterior glass components across a variety of vehicles.