Keeping algae off Atlas shingles: My quick hack

That sideways rain leak thing isn’t just you - mine’s got a spot that only drips if the wind’s howling from the east. Drives me nuts trying to track it down. I’ve also given up on copper strips; algae just laughs at them here. Vinegar mix is underrated, honestly.

The sideways rain thing is the bane of my existence. I’ve got a patch over the garage that only leaks when we get those weird spring storms blowing straight off the lake. Spent a whole weekend with a hose and still couldn’t find the exact spot - just one of those mysteries, I guess.

Copper strips were a total bust for me too. They’re not cheap either, and after two seasons, all I had was streaky shingles and the same green fuzz creeping back. I’m not convinced they ever really worked unless you live somewhere bone dry.

Vinegar’s interesting though. I tried a diluted mix last fall - sprayed it on with a pump sprayer, let it sit, then rinsed it off. Didn’t expect much, but honestly, it knocked the algae back better than anything else I’ve used (and didn’t cost me much). Still, I wonder about long-term effects on the shingles themselves. Is there any chance the acid in vinegar could speed up shingle wear? Atlas claims their shingles are pretty tough, but warranties never seem to cover this kind of thing.

I’m also curious if anyone’s tried those zinc strips instead of copper. They’re supposed to work the same way, but I’m skeptical - especially since nothing seems to stop algae for more than a season around here. Or maybe there’s something else out there that actually works and doesn’t break the bank?

Just seems like every “solution” is either expensive or only lasts until the next rainy season. Has anyone found something that holds up longer term without costing an arm and a leg?

Yeah, I hear you on the copper strips - tried them myself and the only thing they did was leave ugly streaks. Zinc’s a little better, but honestly, nothing’s foolproof if you’ve got shade and humidity. I’m a big fan of letting moss and algae be, but that’s not everyone’s thing. Vinegar’s cheap, but I’d be careful about using it every year. Even mild acids can mess with shingle granules over time, especially if you’ve already got weathered spots. I’ve seen some folks swear by baking soda or even just a stiff broom after a dry spell. Not glamorous, but it’s cheap and easy.

Yeah, I’ve tried the stiff broom trick too - definitely low effort, but I feel like it only works if you catch the algae early. Ever had any luck with those “algae-resistant” shingles? I’m skeptical they actually do much, especially in humid spots.

I’m skeptical they actually do much, especially in humid spots.

Honestly, I get where you’re coming from. I’ve replaced a few roofs with those so-called algae-resistant shingles down here in the Gulf, and I’ll say this: they slow it down, but don’t expect miracles. If your place gets a lot of shade and stays damp, you’ll still see streaks after a couple years. The copper granules help some, but nothing’s truly maintenance-free in this climate. I’d rather budget for a good cleaning every few years than pay extra for “resistant” shingles and hope for the best.