If you’re shopping for new windows, understanding the warranty is just as important as comparing styles and prices. But what does a “normal” window warranty include?

 

Typical Length of a Window Warranty

Most reputable window manufacturers offer warranties ranging from **10 years to lifetime coverage**. Here’s what you can usually expect:

🪟 **Vinyl windows**: 20–30 years or lifetime on the frame
🔳 **Glass units**: 10–20 years against seal failure
🧰 **Hardware**: 5–10 years for locks, latches, and cranks

A “lifetime” warranty often refers to the original homeowner only—be sure to check if it transfers to new owners if you sell your home.

What Does a Window Warranty Cover?

Standard warranties typically cover:

✅ Defects in materials or workmanship
✅ Premature seal failure (leading to foggy glass)
✅ Warping, cracking, or peeling of frames

They generally do **not** cover:

🚫 Normal wear and tear
🚫 Accidental breakage (unless stated)
🚫 Improper installation by unapproved contractors

Pro-Rated vs. Full Coverage Warranties

Some window warranties start with full coverage but switch to **pro-rated** after a few years, meaning coverage decreases over time. Be sure to read the fine print—lifetime coverage doesn’t always mean 100% replacement costs after 20+ years.

Why Installation Matters for Warranty Validity

Most manufacturers require installation by a certified professional to keep the warranty valid. DIY or uncertified installation can void coverage for defects or seal failures. Always confirm your installer meets the manufacturer’s requirements.

Final Thoughts

A normal window warranty lasts 10–20 years, with lifetime coverage available from some brands. Understanding what’s covered—and what’s not—helps you choose windows with confidence.

Ask us about window warranties in your quote

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