The Quick Answer: 30-60 Minutes for Installation
The actual hands-on installation of a new windshield typically takes between 30 and 60 minutes for a standard vehicle. However, the total process — from pulling into the shop to safely driving away — is longer because the adhesive needs time to cure.
Complete Timeline Breakdown
| Step | Time | Details |
|---|---|---|
| Old glass removal | 10-15 min | Cut out old adhesive, remove windshield |
| Surface preparation | 10-15 min | Clean frame, apply primer, prep new glass |
| New glass installation | 10-15 min | Apply urethane adhesive, set windshield |
| Adhesive cure time | 1-2 hours | Minimum safe drive-away time (SDAT) |
| ADAS calibration | 30-60 min | If vehicle has driver-assist cameras |
Total realistic time: 2-4 hours from arrival to driving away safely. If your vehicle needs ADAS calibration, plan for the longer end.
What Affects the Timeline?
Vehicle Complexity
Not all windshield replacements are equal. Factors that extend the timeline include:
- Luxury vehicles: Often have rain sensors, heated windshields, or HUD displays embedded in the glass
- ADAS-equipped vehicles: Forward-facing cameras mounted behind the windshield must be recalibrated — this alone adds 30-60 minutes
- Older vehicles: Rusted frames or deteriorated moldings can complicate removal
- Full-size trucks and SUVs: Larger glass simply takes longer to handle safely
Weather and Temperature
Temperature significantly affects adhesive cure time. In cold weather (below 40°F), urethane adhesive takes much longer to cure — potentially 4-6 hours instead of 1-2. In extreme heat, cure times can be shorter, but the installer needs to work faster before the adhesive sets.
ADAS Calibration Requirements
If your vehicle was manufactured after 2015, there's a good chance it has ADAS features. Calibration is not optional — driving without it is dangerous because your safety systems won't function correctly. Read our complete guide on ADAS calibration after windshield replacement.
Mobile vs. In-Shop Service
In-shop: Controlled environment, all tools on hand, ADAS calibration equipment available — generally faster and more precise.
Mobile service: Convenient (they come to you), but weather-dependent and may not offer ADAS calibration on-site. Best for straightforward replacements on older vehicles.
The Safe Drive-Away Time (SDAT)
This is the most important concept in windshield replacement timing. SDAT is the minimum time the adhesive needs to cure before the vehicle can be safely driven. Driving too soon can cause:
- The windshield to shift or pop out
- Air and water leaks
- Compromised structural integrity in a crash
- Airbag malfunction (the windshield is the backstop for passenger airbag deployment)
Modern urethane adhesives have gotten much faster — many now offer 1-hour SDAT. But your installer should always specify the exact SDAT for the adhesive they use and the current conditions.
How to Plan Your Day
For a smooth windshield replacement experience:
- Schedule a morning appointment — gives maximum cure time during warm daylight hours
- Plan to be without your car for 2-4 hours minimum
- Remove valuable items and any accessories mounted to the windshield (dashcam, toll tag, etc.)
- Leave the windows cracked for 24 hours — don't slam doors (the air pressure can stress uncured adhesive)
- Avoid car washes and high-pressure water for 48 hours
For pricing details, see our complete windshield replacement cost guide.
