IP44 is not outdoor-rated. It is splash-proof only — suitable for bathrooms and covered areas, not for exposed outdoor installation. IP44 wall packs pulled after 18 months in a humid climate showed corroded PCBs, dead LED arrays, and rusted steel housings.
Rating Definitions (IEC 60529)
IP65: Dust-tight (6) + water jet resistant (5). Suitable for most outdoor installations including parking lots, building facades, and covered walkways. IP66: Dust-tight (6) + powerful water jet resistant (6). Required for coastal installations, uncovered areas, and locations with pressure washing. IP67: Dust-tight (6) + temporary submersion (7). Required for in-ground fixtures and flood-prone areas.
Coastal Installation Requirements
For installations within 5km of saltwater, specify IP66 minimum with 316 stainless steel hardware. Standard 304 stainless or galvanized steel corrodes within 24-36 months in salt spray environments. Verify the manufacturer explicitly tests to IEC 60068-2-52 (cyclic salt mist).
IK Impact Rating
IK rating (IEC 62262) measures mechanical impact resistance. IK08 withstands a 5-joule impact — equivalent to a 1.7kg mass dropped from 40cm. Parking garage and warehouse fixtures require IK08 minimum due to vehicle and equipment contact. IK07 or below in these environments results in replacements within 2 years.
Gasket Material
The sealing gasket material determines outdoor longevity more than the IP rating number. Silicone gaskets maintain elasticity for 10+ years under UV exposure. EPDM rubber gaskets harden and develop cracks within 3-5 years. A $0.30 gasket failure can destroy a $200 fixture. Verify gasket material in the specification sheet.
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