I've seen copper strips used on a friend's roof, and honestly, they seemed to help at first but after a few years the algae came creeping back. Maybe the metal oxidized or something and lost effectiveness over time? I'm wondering if anyone's tried those algae-resistant shingles instead—do they actually hold up better long-term, or is it just marketing hype again...
"Maybe the metal oxidized or something and lost effectiveness over time?"
Copper strips do oxidize, but that's actually part of how they work—the runoff from oxidized copper is what kills algae. Problem is, after a few years, dirt and debris build up and block the runoff, making them less effective. I've heard mixed things about algae-resistant shingles too...some neighbors swear by them, others say they're overpriced. Personally, regular roof cleaning every couple years has worked best for me—simple, straightforward, and no gimmicks involved.
Yeah, regular cleaning definitely seems like the most reliable route. I've seen copper strips work well initially, but like you mentioned:
"after a few years, dirt and debris build up and block the runoff, making them less effective."
Exactly my experience too. Even with algae-resistant shingles, they're not foolproof. A friend installed them thinking he'd never have to clean again, but after about five years, he still had noticeable algae streaks. They're probably better than standard shingles, but definitely not maintenance-free.
Tile roofs aren't totally maintenance-free either, despite their reputation. Sure, they're durable and algae doesn't stick as easily, but debris still collects in valleys and gutters. Plus, cracked or slipped tiles happen occasionally, especially after storms. So, while tile roofs might need less frequent attention, I'd say "maintenance-free" is a bit of an exaggeration.
Yeah, tile roofs definitely aren't a "set it and forget it" deal. I manage a property with a Spanish tile roof, and while algae isn't much of an issue, we've had our share of cracked tiles after storms or even just from someone walking up there carelessly. Plus, leaves and pine needles love getting cozy in those valleys...so regular checks are still a must. Less hassle overall, sure, but maintenance-free? Nah, that's wishful thinking.
"Plus, leaves and pine needles love getting cozy in those valleys..."
Haha, tell me about it—I've seen roofs practically growing their own mini forests up there. Tile roofs are sturdy, sure, but I've lost count of how many cracked tiles I've spotted from satellite dish installers or chimney sweeps just strolling around like it's a sidewalk. Ever had critters nesting under loose tiles? Found a family of squirrels once...that was a fun inspection day.
