Re: roof moss

**t* <t*@gmail.com>**

Baking soda.

I haven't used it on a roof, but I helped a neighbor get rid of slippery
mossy growth on a shaded front brick sidewalk during a dry break in the
rainy season by sprinkling baking soda, distributing it gently with a broom
(to get it in the nooks and crannies in the bricks), and walking away. I
put down enough to reach all areas but not enough to make it look snowy.
The moss was gone in a few days, but iirc the debris did have to be swept
away. The runoff did not affect the adjacent lawn.

The baking soda changes the pH and makes it inhospitable for moss.

Of course, if the moss has been there long enough for a layer of soil to
build up, you will need to physically remove the soil after the moss is
gone.

On Thu, Mar 27, 2014 at 3:39 PM, Duane Campbell <dcamp911@gmail.com> wrote:

> A power wash, not too strong, maybe like the sidewalk sweeper nozzle on
> your hose, shouldn't damage your shingles if you do it from the top of the
> roof. I have done this with twigs and leaves from the gangster maple on the
> south side of the house.
>
>
> Duane Campbell
> Syndicated garden columnist
> Author: Best of Green Space; 30 Years of Composted Columns
>
> -----Original Message----- From: Rich Pomerantz
> Sent: Thursday, March 27, 2014 5:13 PM
> To: gardenwriters@lists.ibiblio.org
> Subject: [GWL] roof moss
>
>
> I've been wrestling with the question of my roof moss for a few years now.
> I
> know there are those who advocate leaving it alone, it looks rustic and
> charming, etc etc, and I agree, it does. It also shortens the life of my
> roof, and I am unfortunately not in a position to enjoy that kind of
> luxury,
> so I want to remove it. I know power washing is not the answer as it will
> certainly damage the asphalt shingles.  I have been told that bleach will
> not work. The solution seems to be to use some kind of herbicide to kill
> it,
> then remove it gently with a brush. I am fine with this approach, except I
> do not want to use something that will also run off the roof and poison
> everything it comes into contact with around the perimeter of my garage and
> my studio, the two roofs where I have moss growing.
>
> What does the collective wisdom here suggest?
>
> Rich Pomerantz
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