Calvana Urethane Windshield Adhesive 310ml - Fast-Curing Polyurethane Sealant Kit with Primer & Accessories, Weatherproof Bond

Calvana Urethane Windshield Adhesive is a 310ml fast-curing polyurethane sealant kit designed to bond and seal automotive glass reliably for windshield, window and trim repairs.

Engineered for automotive professionals and informed DIYers, this Calvana kit combines a high-strength urethane formula with essential accessories — a primer, nitrile gloves, applicator sticks, and tip — so you can prepare surfaces, apply a precise bead and achieve a durable weatherproof seal. The product is formulated to resist vibration, temperature changes and moisture curing, making it suitable for front and rear windshields, sunroofs, lights and window trims across cars, trucks and RVs.

How quickly does this adhesive cure and get a vehicle back on the road?

Calvana’s urethane is a rapid-curing formulation that begins tack-free quickly while continuing to develop full strength over time. Cure speed varies with temperature and humidity, but the product is optimized for efficient handling and faster service turnaround.

• Fast tack development for quicker tooling and repositioning.
• Continues to mature in strength after initial cure for long-term bond integrity.
• Works with standard manual or electric 310ml caulking guns.

Will this sealant hold up in changing weather and road conditions?

This polyurethane was designed to resist UV, heat, humidity and driving vibrations. It cures by reacting with atmospheric moisture, creating a flexible, weatherproof seal that maintains adhesion across a wide temperature range.

• Moisture-curing chemistry improves wet-weather reliability.
• UV-resistant formulation reduces yellowing and breakdown.
• Flexible bond absorbs impacts and vibration from highway speeds.

What surfaces and repairs is the Calvana kit suitable for?

The adhesive bonds well to uncoated glass edges, primed or painted metal, and many automotive substrates. It’s appropriate for primary sealing of windshields and for repair or replacement tasks on windows, lights, sunroofs, doors and trim pieces.

• Ideal for front and rear windshields, side windows and sunroofs.
• Works on headlights, taillights, window trims and other exterior joints.
• Compatible with painted or primed metal and many automotive plastics when prepped correctly.

What comes in the box and how do I prepare surfaces for best adhesion?

The 310ml package includes the urethane cartridge, a windshield primer, nitrile gloves, two applicator sticks and a dispensing tip to get you started. Proper surface prep — cleaning, degreasing and applying the primer where needed — is essential for a reliable bond.

• Contents: 310ml urethane cartridge, primer bottle, gloves, 2 applicator sticks, dispensing tip.
• Preparation: remove old sealant, clean with solvent, roughen mating surfaces if necessary, apply primer as directed.
• Tip: primer production date is printed; use primer within six months after opening for best results.

Who is this for: Calvana’s Urethane Windshield Adhesive suits professional auto glass technicians, collision repair shops and experienced DIYers who need a high-strength, fast-curing polyurethane sealant. Choose this kit if you require a weather-resistant, vibration-tolerant bond for windshield installation, window or light sealing, and appreciate having a complete starter set with primer and application tools included.