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Old November 6th, 2013, 04:02 PM   #1
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Default School me on moss removal on a roof

So the neighbors around the corner have moss on their roof and need to have it removed in order to pass for their home owners insurance.

I looked up some of this yesterday. Best thing I have found is using Sodium Hypoclorite (also called "Shock" in pool stores?), mixed with water and some dish soap. Spray on, let dry, brush off, rinse off.

Anyone had the fun in doing this?
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Old November 6th, 2013, 04:18 PM   #2
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do they have a lot of trees overhanging the house? I assume it doesn't get sun?
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Old November 6th, 2013, 04:24 PM   #3
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A few, that's another thing to look into doing some maintenance on. It's on the North side of the house which I gather is the more common side.
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Old November 6th, 2013, 04:25 PM   #4
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This is my only suggestion if your 1st plan doesn't succeed.
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Old November 6th, 2013, 04:37 PM   #5
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I have a bit of moss on my roof as well. I searched quite a bit on the internet. A few pointers that I found during my search....
1. If possible, find out the shingle manufacture, they have a procedure they recommend
2. Do not use a power washer
3. Seems like a lot of people use a bleach solution
4. Depending on how much the moss has embedded into the shingle, be careful using a brush.

I haven't done mine yet, so I would be curious to other suggestions
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Old November 6th, 2013, 04:42 PM   #6
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If the moss has been there for any length of time, it will have grown into the actual material the shingle is manufactured from. If this is the case the only way is to remove and replace with new... You might make it look good to pass inspection, but is likely to come back.
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Old November 6th, 2013, 04:45 PM   #7
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Just mix up some bleach and ammonia. Moss won't even bother you anymore.
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Old November 6th, 2013, 04:48 PM   #8
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Quote:
Originally Posted by scare-crow View Post
Just mix up some bleach and ammonia. Moss won't even bother you anymore.
Come on now, some people may not know this is a joke. I mean if you tell someone to drink bleach that is one thing but not everyone knows not to mix these two.
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Old November 6th, 2013, 05:47 PM   #9
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50/50 12.5% sodium hypochlorite and water. 1oz of liquid gain ultra laundry soap per gallon of mix.

SH is simply liquid pool shock. The gain is a surfactant so it will Cling.

Spray on as heavy as you can without it pouring off the roof. Don't rinse, let it sit. If it's heavy it's going to take a few applications. The rain and wind and I'll take it off.

Don't let the mix hit any Windows, deck, etc. Have somebody ready with a hose to rinse whatever hits the house, vegetation, etc
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Old November 6th, 2013, 05:52 PM   #10
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Straight bleach kills it, works good.
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Old November 6th, 2013, 06:13 PM   #11
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Quote:
Originally Posted by BigBird View Post
If the moss has been there for any length of time, it will have grown into the actual material the shingle is manufactured from. If this is the case the only way is to remove and replace with new... You might make it look good to pass inspection, but is likely to come back.
At this moment in time they're only aiming to get the moss off for inspection. They can worry about it themselves when that time comes. If it were my house, I would get to the root instead of quick-fixing it.

On top of bleach solution I saw a little bit about installing Zinc (?) strips at the peak, so when rain comes it will wash the zinc down the roof killing other bits of moss.
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Old November 6th, 2013, 06:39 PM   #12
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Quote:
Originally Posted by NSmist View Post
At this moment in time they're only aiming to get the moss off for inspection. They can worry about it themselves when that time comes. If it were my house, I would get to the root instead of quick-fixing it.

On top of bleach solution I saw a little bit about installing Zinc (?) strips at the peak, so when rain comes it will wash the zinc down the roof killing other bits of moss.
Yes zinc works great but not immediately. My neighbor across the street still has an antenna on their roof and where the water runs down the roof off of it the shingles look new. The others are darker and some moss. My roof was the same before i removed the antenna and reshingled.
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Old November 6th, 2013, 06:42 PM   #13
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Ive got this problem too. What about bushes, flowers, plants under neath the drip edge, I dont have gutters....
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Old November 6th, 2013, 06:44 PM   #14
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I have it on the front of my house under the windows on second story. no trees overhang it. but its the last spot of the day to get any sunshine. I was just talking the other day about how I needed to try and get rid of it.
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Old November 6th, 2013, 06:47 PM   #15
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Old November 6th, 2013, 07:23 PM   #16
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if you don't want problem solved yesterday, go to local home depot, etc., get zinc strips to nail on peak of roof. also, google it first. do some research and don't be lazy.
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Old November 6th, 2013, 10:10 PM   #17
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Y can't a power washer with the fan tip on it work? As long as u go with the shingles and not against them I don't see a problem?
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Old November 6th, 2013, 10:29 PM   #18
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You'll blow the gravel off of the shingle. Once that happens, the shingle will deteriorate quickly and your roof will leak.
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Old November 6th, 2013, 10:31 PM   #19
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Quote:
Originally Posted by muddinman56 View Post
Y can't a power washer with the fan tip on it work? As long as u go with the shingles and not against them I don't see a problem?
it also won't kill the moss. It will just grow back.
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Old November 7th, 2013, 12:15 PM   #20
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I knew it wouldn't kill the moss but I didn't think about the grit on the shingle
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