Clearing roof mess: DIY or hire a pro?

if you skip the brushing, the moss seems to come back way faster

Yeah, skipping the brushing is like skipping leg day - looks fine for a minute, but you pay for it later. I’ve tried those copper strips up near the ridge, and they actually slowed down the moss a bit. Not a miracle, but better than nothing. The eco sprays are hit or miss for me too... Pacific Northwest weather just laughs at them. It really does feel endless sometimes, but hey, at least you’re not blasting your shingles into orbit like your neighbor.

the eco sprays are hit or miss for me too... Pacific Northwest weather just laughs at them.

That’s been my experience as well. The moss just shrugs off most of those treatments, especially with all the rain we get. I’d add that if you’re doing it yourself, be careful with pressure washers - seen more than a few folks strip granules right off their shingles. Brushing’s tedious, but it’s the least damaging. Copper strips help, but only where the runoff actually hits. If you’ve got a steep roof or any storm damage, sometimes it’s safer (and cheaper in the long run) to call in a pro.

Brushing’s tedious, but it’s the least damaging. Copper strips help, but only where the runoff actually hits.

Yeah, I’ve noticed the same thing with copper - works great in a narrow streak, then the rest of the roof just keeps going green. Tried zinc strips once too, but honestly didn’t see much difference. Maybe it’s just our endless drizzle up here.

Pressure washing is tempting, but I learned the hard way that it can do more harm than good. Lost a bunch of shingle grit on my old place and ended up with patchy spots that aged way faster. Now I just stick to a stiff brush and a harness if I have to get up there.

Curious if anyone’s had luck with those enzyme-based moss removers? I keep seeing them at the hardware store, but haven’t pulled the trigger yet. Wondering if they’re any better than the “eco” sprays or just another thing that gets washed away by the next rain.

I’ve tried those enzyme moss removers on asphalt shingles, and honestly, they’re hit or miss. Worked okay during a dry spell, but after a week of rain, most of it washed off before it did much. I just stick with brushing too - less mess, less risk.

I just stick with brushing too - less mess, less risk.

That’s been my go-to as well. Tried one of those “miracle” enzyme sprays last spring, and I swear the moss just looked at me and laughed. Maybe it works better in places that don’t get sideways rain every other day, but here? Not so much. I ended up on the roof with a stiff brush and a podcast, which honestly wasn’t the worst way to spend a Saturday.

I get the appeal of the sprays - no ladders, no elbow grease - but like you said, half the time it’s just a slippery mess. Plus, I’ve seen what happens when folks get too enthusiastic with pressure washers... let’s just say shingle bits in the gutters aren’t a good sign.

Brushing’s not glamorous, but it gets the job done. And hey, at least you know exactly what’s coming off your roof (and what’s staying put).

Brushing’s not glamorous, but it gets the job done. And hey, at least you know exactly what’s coming off your roof (and what’s staying put).

I’m with you on the pressure washer - my neighbor tried that and ended up with more shingle grit in his gutters than moss on the ground. I’ve only ever used a stiff brush and a harness, but I keep wondering if there’s a safer way for steep roofs. Has anyone tried those long-handled brushes from the ground? Not sure if they actually reach or just make a mess.

Long-handled brushes are interesting in theory, but I’ve only seen them work well on single-story homes with a pretty gentle pitch. Once you get into anything steeper, especially with architectural shingles or older roofs, it seems like you’re just pushing debris around or risking breaking off granules. I tried one of those telescoping poles with a brush head last fall - couldn’t get enough pressure to actually dislodge the moss, and half the time I was just knocking it down into the gutters anyway.

I’m curious if anyone’s tried those roof cleaning “rakes” that claim to be safe for shingles? I’ve seen mixed reviews. My main concern is always about damaging the shingle surface or voiding warranties. Also, I wonder if there’s a difference in approach for composite vs. metal roofs when it comes to ground-based cleaning tools... Metal seems more forgiving, but maybe that’s just my bias.

Has anyone found a tool or method that actually works from the ground on a steep roof without making things worse?

You’re spot on about the risks with long-handled brushes and steep roofs - especially with older shingles. I’ve seen more granule loss than actual cleaning in those cases. Those so-called “shingle-safe” rakes are a mixed bag; some are gentler, but even then, you’re still risking shingle damage or warranty headaches if you’re not careful. Metal roofs do tend to be more forgiving, but even then, you can scratch the finish if you’re not paying attention. Honestly, for anything steeper than a 6/12 pitch, ground-based tools just don’t cut it in my experience. Sometimes it’s safer (and cheaper in the long run) to call in a pro rather than risk damaging the roof or hurting yourself.

That’s my worry too - those rakes claim to be gentle, but I’ve seen the granules come off way too easily on older shingles. I tried using a roof rake from the ground last winter (asphalt, 7/12 pitch), and honestly, it was more stressful than helpful. Do you think there’s any safe method for clearing debris without risking the shingles or voiding the warranty? Or is it just not worth the gamble?

I tried using a roof rake from the ground last winter (asphalt, 7/12 pitch), and honestly, it was more stressful than helpful.

Yeah, I hear you on that. I’ve managed a handful of properties with older asphalt roofs, and those “gentle” rakes always make me nervous. One winter, I watched a tenant go at it with a plastic rake - by spring, the gutters were full of granules and we had to patch up some bare spots. Not fun.

Honestly, if your shingles are already showing their age, even the so-called safe tools can do more harm than good. And warranties… they love any excuse to deny coverage. I’ve seen claims get tossed just because someone used the wrong broom.

If it’s just leaves or light debris, sometimes a leaf blower (on low) from a ladder can work - if you’re steady and not dealing with ice. But for anything heavier or if you’re worried about voiding the warranty, I usually bite the bullet and call in a pro. Costs more upfront but cheaper than replacing half your roof because of an overzealous cleaning session.

Bottom line: if you’re stressing about it, probably not worth the risk unless you’re really confident in your method - or your balance!

I get the concern about damaging old shingles, but I’m not sure calling a pro every time is always necessary. My roof’s pushing 18 years (asphalt, similar pitch), and I’ve been using a rake for snow and leaves for a while. Yeah, I’ve lost some granules here and there, but honestly, between squirrels, hail, and the neighbor’s kid’s frisbee, the roof’s seen worse.

Maybe it depends on how rough you are with the rake? I use one with wheels so it barely touches the shingles - just kind of scoots over them. Not saying it’s foolproof, but it seems gentler than some of the “pro” jobs I’ve watched where they’re up there stomping around like they’re auditioning for Riverdance.

I do hear you on warranties being picky though. Mine was already expired by the time I started worrying about it, so maybe that’s why I’m less stressed. If you’re still covered, probably worth double-checking what they’ll actually allow before doing anything.

Anyone else just accept a little mess up there until spring? Sometimes I feel like the only one who lets Mother Nature handle most of it...

- I’m with you on not calling in a pro every time. My place is 1970s, roof’s about 15 years old, and I’ve been clearing leaves and pine needles myself for ages.
- I use one of those cheap plastic rakes - no wheels, but I’m careful not to dig in. Lost some granules here and there, but honestly, the wind does more damage than my rake ever has.
- Warranties are a joke once you’re past year ten anyway (at least in my experience). Mine was voided after a tree limb hit the roof, so now I just do what I can to keep it tidy.
- I’ll admit, sometimes I just leave the mess until spring unless it’s a crazy amount. Not worth risking a fall for a few sticks or leaves.
- Only time I’d call someone is if there’s ice damming or something major. Otherwise, DIY all the way - just gotta be gentle and know when to leave well enough alone.
- For what it’s worth, my neighbor paid for a “pro” last year and they left more scuff marks than my old rake ever did...

Interesting point about the wind doing more damage than the rake. Have you noticed any issues with moss or algae buildup when you leave the debris until spring? I see a lot of older roofs where that stuff creeps in if leaves sit too long, especially on shaded sides. Also, any trouble with gutters backing up, or do you just clear those out separately? Just curious how folks balance safety with keeping things maintained.

Waiting until spring to clear the roof always makes me a bit nervous, especially in wetter climates. Even if wind does some of the work for you, isn’t there still a risk that debris just gets caught in valleys or behind chimneys where it stays damp? I’ve seen moss get started that way, and once it’s in, it’s a pain to control. Also, do you trust wind not to just dump all that stuff straight into the gutters? I get wanting to avoid ladders in winter, but sometimes it seems like waiting just trades one problem for another.

I get what you’re saying about moss and damp spots, but honestly, I’m not convinced waiting until spring is always a bad call. I just bought my place last year (asphalt shingles, pretty average pitch), and I was all set to get up there in December when the leaves finished falling. Then we got hit with a bunch of rain and ice, and there was no way I was risking it on a slippery roof.

I figured the wind would at least clear off the worst of it, and yeah, some stuff ended up in the gutters, but cleaning those out in March wasn’t that big of a deal. The valleys were a little messy, but nothing had started growing yet. Maybe it’s different if your roof is shaded or you’ve got a ton of trees overhead? For me, the risk of slipping seemed worse than maybe having to scrub off some moss later.

Not saying it’s perfect, but sometimes you just have to pick your battles... I’d rather deal with a bit of extra cleanup than end up in the ER because I tried to play hero on an icy roof.

For me, the risk of slipping seemed worse than maybe having to scrub off some moss later.

That’s a fair point - safety’s got to come first. I’ve seen a few folks try to clear their roofs in winter and end up with more than just a bruised ego. Out of curiosity, did you notice any shingle damage or granule loss after waiting through the winter? Sometimes debris sitting too long can trap moisture, but maybe that’s more of an issue with older roofs or heavy shade. Just wondering if you saw any signs of wear after your first spring cleanup.

Waiting until spring to clear off moss and debris is honestly what I’ve done a few times, especially after some icy winters. I totally get the worry about moisture and shingle wear, but in my experience (asphalt shingles, Pacific Northwest), one winter of leaves or moss didn’t seem to do much harm. The first year I moved in, I was nervous about it, but when I finally got up there in March, most of the debris brushed off pretty easily. Didn’t notice any extra granule loss compared to other years.

I do think age and shade play a big role, though. My neighbor’s place is surrounded by fir trees and their roof is older - moss seems to dig in deeper for them, and they’ve had to replace a few shingles after a rough winter. For newer roofs or if you only get light debris, waiting it out seems reasonable. Just gotta be ready for a bit more elbow grease come spring.

Honestly, slipping isn’t worth it - moss can be dealt with, broken bones are a whole different story.

I hear you on the “wait until spring” approach - done that myself more than once, especially after a couple of those icy PNW winters where just walking to the mailbox feels risky. I’ll admit, I used to be all gung-ho about getting up there right after every storm, but after nearly sliding off my own roof (twice), I started rethinking my priorities. Moss and leaves are annoying, but a trip to urgent care is worse.

That said, I’m a little more cautious now because my place is pushing 30 years old and the shingles are definitely showing their age. Last year, I let things go until March and ended up with a patch of moss that was basically its own ecosystem - took me half a Saturday to scrape it off. Didn’t see any leaks or major damage, but I did notice some extra granules in the gutters.

If your roof’s newer and you’re not under a forest canopy, waiting seems fine. But for older roofs or spots that stay damp all winter... I’d at least keep an eye out for trouble spots. And yeah, no shame in hiring someone if you’re not feeling steady on a ladder anymore - gravity’s undefeated.

- Just bought my first place last fall, so this is all new for me.
- My roof’s only about 8 years old (asphalt shingles), but I’m already seeing some moss on the north side.
- Kinda nervous about climbing up there, especially after hearing stories like yours... ladders freak me out.
- Is it overkill to hire someone for a small patch? Or do people just use those long-handled brushes from the ground?
- Wondering if I should be worried about the granules in the gutters too, or if that’s just normal wear.

Kinda nervous about climbing up there, especially after hearing stories like yours... ladders freak me out.

Honestly, if you’re not comfortable with heights, hiring someone isn’t overkill at all. Safety first. Moss on the north side is super common - shade and moisture just do that. As for the granules in the gutters, a little bit is normal as shingles age, but if you’re seeing piles, it’s worth keeping an eye on.