Impact windows are built to last a long time, but they are not maintenance-free forever. The honest answer is that the glass itself tends to outlast several other parts of the window.
What Actually Wears Out First
The impact-rated glass and the laminate layer inside it are built to last for decades under normal conditions. What tends to wear out sooner is the hardware, the seals, and the frame components, especially after years of exposure to Florida sun and salt air near the coast. Seals can lose their seal over time, which shows up as fogging between panes or drafts around the frame long before the glass itself fails.
Signs It’s Time to Replace Rather Than Repair
Fogging between the glass layers that does not clear, visible cracking or delamination in the laminate layer, or a frame that has warped enough that the window no longer closes and locks properly are all signs that repair will not solve the underlying problem. A window that is still sealing and locking correctly, with only minor hardware issues, can often be repaired instead of fully replaced. The mistake most homeowners make is waiting until multiple windows fail at once instead of addressing hardware issues early, which is usually the cheaper fix. Learn more about Can You Replace Just the Exterior Doors Without Redoing All the Windows at Once?
What This Means for Planning a Replacement
Most well-installed impact windows in this climate hold up for fifteen to twenty-five years before full replacement becomes necessary, though hardware and seal maintenance along the way can extend that. Knowing which signs point to a real replacement versus a simple repair saves homeowners from replacing windows earlier than they actually need to.
For questions about doors specifically, the companion page on this pair covers whether you can replace just the exterior doors without redoing all the windows. Visit our window and door replacement page for full details, or check our Google Business Profile.