Keeping algae off Atlas shingles: My quick hack

Zinc strips are definitely the way to go in our climate. I tried the chemical moss killers a couple times, but they just made a mess and didn’t last through the winter. The zinc takes a while, but it’s low effort and you don’t have to keep reapplying anything. I’ve got Atlas Pinnacle Pristine shingles and checked with their warranty folks before putting up the strips - turns out as long as you’re not prying up whole shingles or using weird adhesives, they’re fine with it.

One thing I’d add: if you’ve got a really steep roof, be careful up there. I nearly slid off trying to nail in the last section... not my brightest moment. Also, if you’re dealing with a ton of tree debris, those leaf blowers are a lifesaver, but I’ve found a soft broom works better for stuck-on stuff after a dry spell.

I still get some moss on the north side where it never dries out, but it’s way less than before. Haven’t found anything that totally stops it, but between zinc and keeping things clear, it’s manageable.

Zinc strips have definitely saved me a ton of headaches, but I swear, every time I’m up there, I start questioning my life choices. Last fall, I tried to sweep off a patch of moss on the north side and ended up with half a pinecone in my shoe and a bruised ego. Anyone else notice the moss just laughs at you if you don’t keep up with the debris? I’ve got Atlas shingles too, and while the zinc helps, I still get those stubborn green patches in the shadiest spots. Ever tried copper strips instead? I heard they work faster, but I’m not sure if it’s worth swapping out what’s already up there.

I’ve got Atlas shingles too, and while the zinc helps, I still get those stubborn green patches in the shadiest spots.

Honestly, I’m starting to think moss is just part of the package deal with these shingles. I tried copper strips on my shed roof (way smaller, way less scary to climb), and yeah, it cleared up faster, but the price tag was a bit much for a full house. Plus, copper turns green too, right? At this point, I’m just hoping my roof doesn’t start growing mushrooms next...

Does anyone else wonder if the algae is just inevitable with these Atlas shingles, especially on the north side? I’ve tried both zinc and copper strips - copper definitely worked faster, but like you said, it’s not exactly cheap. Plus, the green patina just makes me laugh... am I fighting algae or just trading it for a different shade of green? Has anyone actually seen mushrooms up there, or is that just an urban legend?

I’ve actually climbed up on a few roofs with Atlas shingles in shaded spots, and yeah, algae seems almost unavoidable on the north side here in Georgia. Copper strips worked better for me too, but like you said, the cost adds up fast and that patina is kind of its own eyesore. Never seen mushrooms myself - just a lot of black streaks and some lichen. I guess if you had a ton of organic debris up there, mushrooms aren’t impossible, but I’d be surprised. Sometimes it feels like you’re just picking your battles with roof stains...