A quality skylight should last decades, but the number depends on the glazing, the seals and, above all, the installation. Acrylic domes typically serve 15 to 20 years, while well-installed glass units can go longer. What shortens their life is almost always a failed seal or poor flashing, not the glass itself.
At Aluplex we design and install skylights engineered to outlast the roof around them, and we service aging units of any make. If yours is 10+ years old, a quick inspection tells you whether it is time to reseal, re-glaze or replace.
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