Sometimes you just have to accept a little “character” on your shingles... or get used to regular maintenance.
That line about “character” made me laugh—some roofs around here look like they should have their own zip code for moss. I’m with you on the shade issue. Even those algae-resistant shingles only buy you time if your roof stays damp. I’ve tried a couple of those spray-on treatments (the ones that promise 3+ years clear), but honestly, they slow things down rather than stop them. Best results I’ve seen combine regular gutter cleaning, trimming branches, and an occasional light wash—skip the pressure washer unless you want to age your roof ten years overnight.
- Seen a lot of “character” roofs in my time—some folks call it charm, but buyers usually call it a problem.
- I manage a few properties under heavy tree cover. Even with algae-resistant shingles, shade wins out after a couple seasons.
- Tried the copper strip trick along the ridge. It helps, but only up top—rest of the roof still gets streaky.
- Those spray-on treatments are hit or miss for me. They seem to work best right after a deep clean, but nothing’s permanent if you’ve got constant moisture.
- Pressure washing is a hard no. Lost granules and warranty headaches aren’t worth it.
- What’s made the biggest difference:
- Regular gutter cleaning (twice a year, minimum).
- Trimming branches back every spring.
- Light hose rinse if I see buildup starting.
- One place had to get a pro out for a soft wash every few years. Not cheap, but cheaper than a new roof.
Honestly, unless you’re in full sun, it’s just ongoing maintenance. I don’t love it, but it beats explaining to tenants why their roof looks like a chia pet...
You nailed it—shade is the real villain here. I’ve got one duplex that’s basically in a forest, and even with those “algae-resistant” shingles, it’s like a science experiment up there after a wet spring. Copper strips helped a bit, but only where the rain actually runs over them. I’m with you on pressure washing—tried it once, never again. Lost more granules in an hour than I’d like to admit. Gutter cleaning and branch trimming are my go-tos too, but honestly, sometimes you just have to accept a little green fuzz if you want trees.
