See why Huntington Beach flat roofs need careful waterproofing

https://shanexaev239.zenbloomer.com/posts/why-coastal-salt-air-ruins-roof-flashing-in-huntington-beach-2

See why Huntington Beach flat roofs need careful waterproofing and why reroofed low-slope roofs may also need Title 24 cool-roof products, depending on California climate-zone requirements.