Windows — fiberglass double-pane Lifespan: 35 yr avg (2026)

Windows — fiberglass double-pane typically lasts 35 years (range 25–50). 2026 HomeScore lifespan dataset — cite for planning, replacement, or inspection decisio

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HomeScore forecasts repairs, replacement timing, and total ownership cost across 40+ home systems. Used by 8,200+ buyers, sellers, and long-term homeowners in 2026.