If you are fortunate to be living here in the Portland Oregon Metro Area, we will be happy to assist you with your needs to clean off the moss build-up of your roof, doing it the right way. Go to our Moss Control web page to learn more, and even read how to do it yourself.

As to cost to have us do this work, it is calculated in 100 foot sections, or a 10' x 10' area called a square of roofing. These prices are based on a small 10 squares of low slope composite asphalt roofing:

(a) $300 to do a simple scrape and clean up; removing the bulk of the moss, which is around 70 to 80%including t a gutter cleaning.

(b) $800 to carefully scrape the moss off, removing around 95% of the moss build-up, along with clean up including the gutters.

(c) $1,350 to do a simple scrape and clean up; removing around 70 to 80% of the debris, and install an 18” wide custom 20oz copper roof ridge cap 30' long. Keep in mind that this should be the last time this needs to be done, and the copper ridge cap is removable to be reused after a new roofing is installed.

(d) $1,850 for a 95% scrape and install an 18” wide custom copper ridge cap 30' long.

Note: A small house may have around 10 squares of roofing surface, or 1,000 square feet. This is different than the floor space in a house. For a rough idea of the cost, if you happen to know the roofing surface size, you can calculate the cost by 1/10th X your roof squares. It also varies due to the complexities and safety issues to access all the areas of your roof.