Understanding Your UPVC Window Warranty: What’s Covered and What’s Not

A strong warranty is a key sign of a quality UPVC window. But it’s not a blanket guarantee. Understanding the specifics—what is protected and, crucially, what is not—is essential for any homeowner. This guide breaks down the typical coverage you can expect.

What Your UPVC Warranty COVERS

Warranties are usually split by component, each with a different lifespan:

1.The Frames & Profiles (Long-Term Coverage): This is the core structural warranty. High-quality manufacturers often guarantee the UPVC profiles for 5-10 years against defects like warping, cracking, peeling, or excessive fading under normal conditions.

2.The Hardware & Moving Parts (Shorter-Term Coverage): Components that endure wear and tear—such as handles, locks, and hinges—typically have coverage for 1 to 5 years.

3.The Glass Units (Medium-Term Coverage): The insulated glass unit (e.g., double glazing) is commonly covered for around 5 years against manufacturing defects like seal failure (which causes internal misting) or stress cracks.

What Your UPVC Warranty DOES NOT COVER

The exclusions are just as important. Coverage is typically void if the problem stems from:

1.Improper Installation: This is a major exclusion. Always use the manufacturer’s certified installers.

2.Lack of Maintenance: Neglecting basic care, such as using abrasive cleaners or failing to lubricate moving parts.

3.Accidental Damage or Unauthorized Modifications: This includes broken glass from impact, DIY repairs, drilling, or painting the frames without approval.

4."Act of God" Events & Extreme Environments: Damage from floods, earthquakes, or exceptional conditions like severe coastal salt corrosion.

5.Normal Wear and Tear: Minor fading or weathering over a very long period is expected.

How to Keep Your Warranty Valid

Document Everything: Keep your original invoice, warranty certificate, and installation details safe.

Follow Care Instructions: Clean frames with mild soapy water and lubricate hardware annually as recommended.

Report Issues Promptly: Contact the manufacturer or installer as soon as a defect is noticed.

The Bottom Line: A good warranty provides valuable long-term peace of mind, but it is a contract with conditions. Your responsibility is to ensure professional installation and proper maintenance. Always read your specific warranty document carefully to understand your exact coverage.