The rated envelope
The LEDs we install are rated -40°F to 140°F operating. Aluminum track is rated higher-basically until paint starts to discolor at sustained 200°F+, which doesn't happen on a roof.
Fresno's worst recorded summer high in the last decade was 113°F at the airport. Surface temperature on a south-facing roofline in direct sun on that day was higher-but the under-eave track sits in shade and runs noticeably cooler than the surface above it.
What actually fails in heat
Cheap consumer kits use thermoplastics that go brittle around 120°F. We've replaced two Govee strips this summer for customers who switched after their DIY went soft.
The aluminum-and-anodized track in pro systems doesn't have that failure mode-it's the same alloy used in window frames that bake in the sun for 40 years.
What we recommend in the Valley
Order white or bronze track over black if you have a south-facing roofline in direct sun-black absorbs more solar gain and runs hotter. Performance difference is small but real over 15+ years.
