Pets and kids aside, fiberglass screening should last 4- 8 years under most conditions. Less in full sun and longer in shaded areas. Fiberglass also will not permanently crease when scratched. Aluminum screen cloth will last substantially longer (20 - 30 years) and is quite a bit stronger. One disadvantage of aluminum is that it will permanently show creases when scratched or impacted. One other factor is that the strands on aluminum are thinner and thus provide better visibility.
