Protecting and Maintaining Your Auto Glass
Windshield Warranty Coverage Explained: What Is and Is Not Covered
When you have a windshield replaced, the shop typically provides a warranty on the work. Understanding what that warranty actually covers prevents disappointment if you encounter an issue later and helps you evaluate the warranty terms offered by different providers before choosing where to have the work done. Windshield warranties are narrower in scope than many drivers assume.
What a Standard Windshield Installation Warranty Covers
A standard warranty from a reputable auto glass shop covers two things: defects in the materials installed and defects in the installation workmanship.
Materials defects include problems that originate from the glass itself: bubbles or inclusions in the glass, delamination of the PVB interlayer that was present at the time of installation, significant optical distortion attributable to glass manufacturing defects, and any failure of the glass under normal use conditions that can be traced to a manufacturing flaw rather than an impact or other external event.
Workmanship defects include problems attributable to how the installation was performed: water leaks through the windshield seal that develop after installation due to inadequate adhesive application or incorrect primer preparation, wind noise from an improperly sealed installation, trim that was not correctly reinstalled and falls free, and bond failures that result from improper adhesive application rather than external force.
A well-written warranty covers these defects for the lifetime of the vehicle or for a defined multi-year period. Lifetime workmanship warranties are common in the auto glass industry and indicate that the shop stands behind the quality of the installation without a time limit.
What a Warranty Does Not Cover
The most common source of warranty confusion is the assumption that a windshield warranty covers future damage to the windshield. It does not, and this distinction is important:
Future impact damage. A stone chip, crack from road debris, or any damage from an external impact after the installation is not a warranty claim. The warranty covers the installed condition of the glass, not events that occur after installation. A chip that appears two weeks after your replacement is not a defect in the installation; it is new damage requiring its own repair.
Cracks from prior unrepaired chips. If a chip that existed at the time of installation was not disclosed and develops into a crack, this is not typically a warranty matter. The warranty covers the glass that was installed, not pre-existing conditions in other glass components.
Damage from accidents or misuse. Collision damage, vandalism, break-in damage, or any form of damage from an identifiable external event is not a warranty issue.
Normal wear. Surface pitting from road debris over years of driving, wiper scratch marks, and other gradual wear are not warranty defects. These are conditions of use.
What Can Void a Warranty
Several actions can void or limit windshield installation warranty coverage:
Driving before safe drive-away time. If the vehicle is driven before the minimum adhesive cure time specified by the technician, any subsequent bond-related issue may not be covered under warranty because the cure condition was violated.
Pressure washing the seal area within 24 hours of installation. High-pressure water directed at the windshield perimeter before full adhesive cure can compromise the seal. Damage that results from this is typically excluded from warranty coverage.
Modification of the windshield or surrounding area. Any modification to the glass, the trim, or the adhesive area after installation that was not performed by the original installer may void the workmanship warranty for those components.
Use of the wrong cleaning products. Some warranties specify that only approved cleaning products be used on the glass. Using ammonia-based cleaners that degrade seals may limit warranty coverage for seal-related failures if the product use can be connected to the failure.
How to Read a Warranty Before Accepting Service
Before signing any service authorization or completing a windshield replacement, ask the shop for the specific terms of their warranty. Key questions to ask:
- Does the warranty cover leaks and wind noise resulting from the installation?
- What is the duration of the warranty for workmanship? For materials?
- Are there any conditions that void the warranty?
- How are warranty claims handled, and what is the process for getting warranty service?
A warranty that covers workmanship defects for the life of the vehicle is the best indicator of a shop that is confident in the quality of its work. A warranty limited to 30 or 90 days suggests limited commitment to standing behind the installation.
Keystone Auto Glass Warranty
At Keystone Auto Glass, we stand behind our installations with a warranty that covers workmanship and materials defects. If you experience a leak, wind noise, or any issue attributable to our installation, contact us and we will address it. We work in South Central Pennsylvania and back every job we do.
Questions about warranty coverage before scheduling? Call us: