Most windshield replacements take about 60 to 90 minutes from start to finish, plus a short wait for the adhesive to cure before the car is safe to drive. If your car needs ADAS recalibration, add time for that as well.
The windshield replacement process, step by step
- Protect the vehicle. Covers go on the hood, dash and seats.
- Remove trim and the old glass. Wipers, cowl and moldings come off, and the old urethane bead is cut so the glass can be lifted out.
- Prep the frame. Old urethane is trimmed to a thin, even layer, and any bare metal is primed to prevent rust.
- Prep the new glass. The new windshield is cleaned and primed, and sensors, mirror mount and camera bracket are checked.
- Apply urethane and set the glass. A fresh bead of urethane goes on, and the glass is set in place using setting tools for a precise fit.
- Reinstall trim and test. Moldings, cowl and wipers go back on, and rain sensors and heating are tested.
- Calibrate cameras if needed. See ADAS recalibration.
Adhesive cure time and safe drive-away time
The urethane that holds your windshield needs time to cure before the glass can do its job in a crash. The safe drive-away time depends on the urethane, temperature and humidity:
- Typical fast-cure urethanes: about 30 minutes to 1 hour
- Cold or very dry weather: longer
- Full cure: up to 24 to 48 hours, which is why we ask you to go easy for a day or two
Your technician will tell you the exact time for your job. Don’t drive before then.
What can make it take longer
- ADAS calibration, especially dynamic calibration that needs a road drive
- Rust on the frame that has to be treated
- Rain or cold, which slow the cure
- Large windshields on trucks and RVs
FAQ
Can I drive right after windshield replacement?
Only after the safe drive-away time, usually about an hour. Driving sooner can let the glass shift.
How long does windshield replacement drying time last?
The urethane keeps curing for up to two days. See what not to do after windshield replacement.
