I live in one half of a "townhouse" like setup, with one wall of our home
shared with a neighbor. We are in Portland, OR, so roof moss on our 5 year
old composite roof is sometimes noticeable. It is not thick, but on the
north side it is noticeable at the edges of the shingles. I have been
treating it annually with a standard moss control powder, but am
increasingly concerned with dumping sulphates into the water system.
My neighbor is retired, has time galore, and is rather more fastidious about
his side of the property. Not that my side is neglected in any way, it
looks brand new and nary a paint chip to be seen - but I am pretty busy and
we don't always agree on the urgency (or sometimes necessity) of some
maintenance issues. Get the picture? I also want to ensure we keep the
peace, so being younger and in shape, I normally I tend to the tough tasks
(like keeping moss off the roof) for both of us.
My neighbor recently decided moss was an issue, and got a couple of quotes
to have the roof commercially treated. The quotes are coming in around 1K,
or $500+ each. Aside from the labor, the common benefit the commercial
places are offering is an environmentally safe product that is derived from
sodium, or salts. This is the info I get from my neighbor, who is getting
the marketing blurb. I see a few products out there that seem to follow
this pattern (ie. http://www.biconet.com/lawn/moss.html ), but this doesn't
seem to be a commercial grade product.
The quote my neighbor got refers only to a product designated as "RCC". Not
sure if that is a generic or brand name or some industry acronym. Anybody
know where I can find info on product? My intent is to see if I can do the
application myself and save both my quiet neighborhood and $500.