05/29/2026
Those streaks on your roof? Probably not stains.
When the pitch is too shallow for shingles, water doesn't shed the way it's supposed to. It runs slow. It lingers on the edges. When it evaporates, it leaves the dust and dirt behind, and you get those long pale streaks running down the slope.
So the streaks aren't a cosmetic issue. They're a tell. Something like "your roof isn't draining the way the manufacturer designed it to."
If you're seeing this on yours, it's worth a look before the next big rain.
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foothillroofingid.com
Roof! There it is.