The short answer: most windshield replacements take about 60 to 90 minutes for the installation itself. But that's not the whole picture. There's an adhesive cure window before you can drive, and if your vehicle has cameras or sensors mounted behind the windshield, ADAS recalibration adds time on top of that. Depending on your vehicle, a complete windshield replacement appointment, from arrival to safe drive-away, can range from two hours to most of a morning.
Here's a clear breakdown of every stage so you know exactly what to expect before you book.
The Full Windshield Replacement Timeline at a Glance
Assessment: 10–15 min · Glass prep: 10–15 min · Removal: 15–20 min · Installation: 20–30 min · Cure time: 60–120 min · ADAS calibration (if required): 30–90 min · TOTAL: 2–4 hrs depending on vehicle
These are typical ranges for a standard passenger vehicle. Times vary based on vehicle make and model, the type of glass being installed, weather and temperature conditions, and whether ADAS recalibration is required. Your technician will confirm the expected total time at the start of your appointment.
Step 1: Assessment and Preparation (10–15 Minutes)
Before any glass comes out, the technician assesses the damage and confirms the replacement glass matches your vehicle's exact specification. This matters more than most people realize. Modern windshields are not universal, your vehicle may require acoustic glass with a noise-dampening interlayer, a heated windshield with embedded wires, UV or infrared blocking coatings, or a specific bracket position for ADAS cameras. Fitting the wrong glass type creates problems that only show up later: increased road noise, a defroster that doesn't work, or ADAS systems that can't be properly calibrated.
During this step the technician also confirms whether your vehicle requires ADAS recalibration after the replacement, a step that's now necessary for most vehicles manufactured after 2016 with forward-facing cameras. If calibration is needed, the equipment is set up in advance.
Step 2: Removing the Old Windshield (15–20 Minutes)
The technician removes the windshield wiper arms, the interior trim around the A-pillars, and any camera brackets or rain sensor modules attached to the glass. A cutting tool is then run around the perimeter to break the urethane adhesive bond holding the windshield to the frame. The old glass is lifted out carefully, particularly important if the ADAS camera bracket is bonded to the glass rather than the vehicle body, as some manufacturers mount it.
The frame is then cleaned and inspected. Any old adhesive residue, rust, or frame damage is addressed before the new glass goes in. This step is often skipped by low-cost competitors, old adhesive left on the frame reduces the bond strength of the new installation and can cause leaks.
Step 3: Installing the New Glass (20–30 Minutes)
New urethane adhesive is applied to the cleaned frame in a continuous bead. The replacement windshield is positioned and pressed into place. Camera brackets and sensor mounts are reattached according to the manufacturer's specification; the positioning here directly affects whether ADAS calibration will succeed. Interior trim is reinstalled and the technician does a visual check for correct seating, even gaps, and no distortion in the glass.
The installation itself is relatively quick. The waiting is what follows.
Step 4: Adhesive Cure Time (60–120 Minutes)
Urethane adhesives needs time to cure to full strength before the vehicle can be driven. Driving too soon, even a short distance, risks the windshield shifting on impact, compromising the seal, or failing to provide full structural support in a rollover. Most modern urethane adhesives reach safe drive-away strength within 60 minutes at standard temperatures. In cold weather (below 10°C / 50°F), cure time extends, some adhesives require up to two hours in cold conditions.
Your technician will give you an exact safe drive-away time based on the adhesive used, the ambient temperature, and the conditions on the day. Do not drive before this window has passed, regardless of how solid the glass looks.
Step 5: ADAS Calibration — The Step That Changed Everything (30–90 Minutes)
This is where modern windshield replacement gets more complex than it was five years ago. Most vehicles manufactured from approximately 2016 onward have one or more cameras mounted behind the windshield that power safety systems, lane keep assist, forward collision warning, automatic emergency braking, adaptive cruise control, and rain-sensing wipers. After replacement, these systems require
windshield recalibration to function correctly.
Static calibration, performed indoors with a target board placed at a precise distance in front of the vehicle, takes 30 to 60 minutes. Dynamic calibration requires a calibration drive at a set speed on a road with visible lane markings and takes 15 to 30 minutes. Some vehicles require both. Subaru EyeSight, Toyota Safety Sense, Honda Sensing, Tesla Autopilot, and most European ADAS systems fall into this category.
Skipping calibration is not a safe option. An uncalibrated system may appear to function normally while operating outside its designed parameters. Lane keep assist may steer toward lane lines instead of away from them. Automatic emergency braking may not respond correctly. There is usually no warning light to tell you something is wrong.
We confirm at booking whether your vehicle requires calibration and perform it at the time of replacement. For a full breakdown of which vehicles are affected, see our
ADAS windshield calibration guide.
