Knowing what to ask before booking a mobile windshield appointment can save you money, time, and a second repair visit. Mobile service brings the technician to your home or workplace, but the quality of the job still depends on the glass, the adhesive, and the person doing the installation.
A few direct questions up front help you compare quotes fairly and confirm your windshield replacement will be done safely. The sections below cover what to ask, what a good answer sounds like, and how to get your vehicle ready.
Is the Technician Certified and Insured?
Your windshield is a structural part of the vehicle. It supports the roof in a rollover and helps the passenger-side airbag deploy correctly, so the installer’s training matters as much as the glass itself.
Ask whether the technician holds certification through a recognized program, such as the Auto Glass Safety Council and its installation standard. Certified shops follow documented procedures for surface prep, adhesive handling, and cure times.
Questions to ask about credentials
- Are your technicians certified, and by whom?
- Do you carry liability insurance that covers damage to my vehicle or property?
- Are installers company employees or subcontractors?
- How many windshields has this technician replaced on my vehicle type?
A reputable company answers these quickly and without hesitation. If the dispatcher cannot confirm certification or insurance, treat that as a warning sign.
What Glass and Parts Will Be Used?
Two quotes for the same vehicle can differ by hundreds of dollars because of the glass type. Ask exactly what is being installed and get it in writing.
OEM Glass
OEM glass is made by or for the automaker and matches the original in thickness, curvature, tint, and sensor mounting. It usually costs the most, and it is often the safest choice for vehicles with cameras or heads-up displays.
OEE and Aftermarket Glass
OEE (original equipment equivalent) and aftermarket glass is produced by other manufacturers to fit the same vehicle. Quality varies by brand, so ask who makes it and whether it meets federal safety standards.
Other Parts to Confirm
- New molding, clips, and trim, rather than reused pieces
- Rain sensor gel pads and mounting brackets
- Whether a new rearview mirror mount or camera bracket is included
- Whether the glass has the same features as your current one, such as acoustic layers, solar tint, or a heated wiper area
Will ADAS Recalibration Be Included?
Many newer vehicles carry a forward-facing camera mounted on the windshield. It supports lane departure warning, automatic emergency braking, and adaptive cruise control, all grouped under ADAS (advanced driver assistance systems).
When the windshield is replaced, that camera usually needs to be recalibrated. Research from AAA has shown that even a small misalignment can cause these systems to misjudge distance or lane position.
What to Ask
- Does my vehicle require ADAS calibration after a windshield replacement?
- Is the calibration done by your team, or sent to a dealer or partner shop?
- Is it static (in a shop with targets), dynamic (a road drive), or both?
- Is the cost included in the quote?
Some calibrations cannot be done in a driveway because they need level ground, controlled lighting, and measured targets. A good company will tell you this before the appointment, not after the glass is installed.
Adhesive and Safe Drive-Away Time
The urethane adhesive holds the windshield to the frame. Until it cures enough, the glass may not stay in place during a crash or support airbag deployment properly.
Ask which adhesive the company uses and what its safe drive-away time is. Many fast-curing urethanes allow driving after roughly one hour under normal conditions, but the exact time depends on the product, the temperature, and humidity. Always get the number from the technician for your specific job.
What a Good Answer Includes
- The brand or type of urethane, and whether it meets federal safety requirements
- A specific safe drive-away time, not a vague “soon”
- Instructions for the first 24 hours, such as leaving the retention tape in place and avoiding slamming doors
- Guidance on when you can use a car wash
How Do Weather and Location Affect the Appointment?
One advantage of mobile auto glass service is convenience, but the work still needs clean, dry conditions. Rain, snow, extreme cold, and high wind can interfere with adhesive bonding and let moisture or debris reach the bonding surface.
Ask what happens if the weather turns on the day of your appointment. Most professional companies will reschedule, use a covered area, or bring a canopy rather than risk a weak bond.
Choosing the Right Spot
- A flat driveway or parking space with room to open all doors
- Shade or a garage if possible, since direct sun and cold both change cure behavior
- Access to the vehicle for the full job, usually 60 to 90 minutes for a standard windshield
- A location that is not under trees, sprinklers, or active construction dust
If your vehicle needs a static ADAS calibration, ask whether that step requires a shop visit even though the glass is installed at your location.
Repair or Replacement, and What Does the Quote Include?
Not every damaged windshield needs to be replaced. Chips smaller than about a quarter and short cracks, often under 6 inches, can frequently be repaired if they are not in the driver’s direct line of sight or at the edge of the glass. Repair is faster, costs less, and keeps the factory seal intact.
Ask the company to assess the damage from photos before booking. Repair becomes less likely once dirt gets into the chip or a crack spreads, so schedule soon after the damage appears.
Items a Complete Quote Should List
- Glass type and brand
- Labor and mobile service fees
- Moldings, clips, and sensor parts
- ADAS calibration, if required
- Taxes and any disposal or environmental fees
Ask whether the price is firm or an estimate. A low quote that leaves out calibration or moldings can end up costing more than a complete one.
Insurance and Payment Questions
If you have comprehensive coverage, your policy may pay for part or all of a windshield claim. Some policies and some states waive the deductible for repairs, so check your coverage before you book.
Ask the company if they work directly with your insurer. Many shops handle the claim paperwork and bill the insurance company, which saves you from paying upfront and waiting for reimbursement.
Questions to Ask
- Do you bill my insurance company directly?
- What will I owe at the appointment, and what payment methods do you accept?
- Do you charge a deposit or a cancellation fee?
- Will a claim be filed under my glass coverage or my general comprehensive coverage?
You are generally free to choose your own auto glass shop, even if your insurer suggests a preferred provider.
What Warranty Comes With the Work?
A windshield can look fine on the day of installation and still develop problems later. Leaks, wind noise, and stress cracks often show up in the first days or weeks.
Ask for the warranty terms before you book. Many reputable companies offer a workmanship warranty that covers leaks and installation defects, and some extend it for as long as you own the vehicle.
Details to Confirm
- What the warranty covers: leaks, wind noise, molding defects, or glass defects
- How long coverage lasts, and whether it transfers if you sell the vehicle
- Whether a warranty claim requires a shop visit or a mobile return
- Whether the warranty is backed by the company or by a third party
Get the warranty in writing on your invoice so you have a record if you need to use it.
How to Prepare for the Appointment
A little preparation helps the technician work faster and keeps the schedule on track.
Before the Technician Arrives
- Have your VIN and vehicle details ready so the correct glass is ordered
- Take photos of the damage and any existing dings or scratches
- Remove toll tags, dash cams, or parking permits from the glass
- Clear the dashboard and front seats so the technician can reach the work area
- Confirm the arrival window and the best phone number to reach you
After the Installation
Keep the retention tape on for the time the technician recommends and leave a window cracked slightly if advised, to relieve pressure from closing doors. Avoid pressure washing for the first few days, and report any leak or whistling noise right away.
The right questions turn a routine booking into a confident decision. Credentials, glass type, ADAS calibration, cure time, warranty, and a complete quote all shape how safe and lasting your windshield replacement will be.
At SLP Autoglass, we are happy to answer every one of these questions before your appointment. We provide mobile windshield service in Lakewood and throughout the Denver metro area. Call (303) 936-6666 or visit SLPAutoglass.com to schedule your appointment and get a clear, itemized quote.
Content reviewed and published by SLP AutoGlass Editorial Team.