What Is the Lifespan of a Velux Window?

A properly installed and reasonably maintained Velux window can comfortably last several decades, though the specific components have different working lives within that.

What Typically Lasts How Long

• The window frame itself: often 20–30 years or more with proper care
• Sealed glazing units: commonly 15–20 years before seal failure becomes likely
• Flashing kits: variable, but often needing attention within 15–25 years depending on exposure
• Seals and gaskets: the first component likely to need replacing, sometimes within 10–15 years

What Actually Shortens Lifespan

• Poor original installation, particularly around the flashing
• Lack of periodic maintenance or inspection
• Severe or prolonged weather exposure without any protective measures
• Using a non-manufacturer flashing kit not properly matched to the window

Getting the Most Out of Your Roof Window

1. Ensure correct installation from the outset. This has more impact on lifespan than almost any other factor.
2. Have it checked periodically. Particularly after severe weather, to catch small issues before they become bigger ones.
3. Address seal or flashing issues promptly. Rather than leaving a known problem to develop into a bigger repair.

Why Choose Atlas Roofing Cheshire

We're a domestic and commercial roofing team covering Cheshire and the Wirral, based near Chester, so we know the area and can get to you quickly. Every job comes with clear pricing before work starts and workmanship you can rely on.