Keeping algae off Atlas shingles: My quick hack

- Totally agree about the copper/zinc granules - my neighbor calls them “shingle seasoning.” Not sure if they’re tasty, but they do seem to keep the green fuzz at bay.
- North side of my roof is basically a moss resort. I swear, if I don’t get up there every spring with a broom and a little elbow grease, it’s like a chia pet exploded.
- Gutters are the real troublemakers for me. If I let leaves pile up, it’s game over - algae city. I started putting those cheap mesh guards in and it’s helped, but now I just have to clean the guards instead of the gutters. Progress?
- The metal ridge strip idea is solid. My uncle did that on his place and swears by it. He says it’s like giving your roof a “copper mohawk.” Not sure if it’s stylish, but his shingles look cleaner than mine.
- Upfront cost for algae-resistant shingles made me wince, but after two years of not having to pressure wash every summer, I’m starting to see the light (and my wallet isn’t crying as much).
- Only thing I’m not sold on: some of those strips look kind of weird from the street. Maybe I’m picky, but I don’t want my house looking like it’s wearing a headband.
- Anyone else notice that after a big storm, all bets are off? Doesn’t matter what you’ve got up there - if enough branches land on your roof, you’re scrubbing green stuff for weeks.

Anyway, still beats climbing up there every month with a bottle of bleach and a prayer. If anyone figures out how to keep squirrels from using the ridge as their personal highway, let me know...

I hear you on the copper strips looking a bit odd - my partner called ours a “metallic headband” too, but honestly, I’ll take that over scrubbing moss every month. I tried the mesh gutter guards last fall and yeah, they’re not perfect, but at least I’m not scooping out sludge every time it rains. For storms, I started trimming back branches twice a year. It’s a pain, but less debris means less green gunk. As for squirrels, still no clue... they treat my roof like a racetrack.

my partner called ours a “metallic headband” too, but honestly, I’ll take that over scrubbing moss every month.

Couldn’t agree more - copper strips might look odd, but they’re way less hassle than constant cleaning. I’ve tried the gutter mesh too and yeah, it’s not perfect, but it beats climbing up there after every storm. Trimming back branches is a pain, but it really does help with the algae and debris. As for squirrels, I’m convinced they just see roofs as their personal highways... haven’t found a fix for that either. Your approach sounds solid to me.

I’ve tried the gutter mesh too and yeah, it’s not perfect, but it beats climbing up there after every storm.

Funny thing, I actually had more trouble with gutter mesh than it was worth - ended up with pine needles wedged everywhere. For me, regular cleaning (as annoying as it is) has been more reliable, especially under big old oaks. I get why folks like copper strips, but in humid climates, they don’t always keep up with the algae. Just my two cents... roofs never seem to be a one-size-fits-all deal.

Can relate to the pine needle problem - my last house had two giant longleaf pines, and that mesh just turned into a mat after every windstorm. I thought about copper strips too, but honestly, with the humidity here (Gulf Coast), I still had black streaks showing up on the north side of my roof after a year or two. Tried scrubbing and even those zinc strips at one point... not much luck.

Funny enough, what’s worked best for me was switching to a blower with an extension pole and just hitting the roof every month or so. Not glamorous, but it stops the algae before it gets a foothold. My neighbor swears by spraying diluted bleach once a season but I’m a little wary about runoff messing with the plants below.

Curious if anyone’s had luck with those newer “algae-resistant” shingles? Atlas claims theirs hold up better, but I haven’t seen much real-world feedback yet.