Jovag Home Inspection, LLC ​License #1820
  • Home
  • Services
  • Blog and DIY
  • Contact
  • Home
  • Services
  • Blog and DIY
  • Contact

Cleaning moss off the roof

4/14/2017

 
Roof with moss and organic debris
Roof with heavy moss growth and organic debris. Note the corner with heavy growth under the tree branches.
The picture above shows a common problem in the Northwest; moss growth and piles of pine needles on the roof. Our frequent rains and lack of sunny days lead to a lot of water on our roofs . If the roof is not kept clean of pine needles and other organic debris, water will stick around on top of the roof and eventually be a prime area for moss growth. 
Close up of excessive organic debris caught on roof around vent and skylight.
Pine needles caught around the skylight and roof vent. This will trap moisture and can lead to leaks.
Pine needles stuck between roof vent and skylight. This area will trap moisture on the roof.
Pine needles caught next to the skylight. This area is retaining moisture; leading to moss growth and possible shingle damage.
Moss loves these wet areas and likes to grow on top of and in between the roof shingles. The shingles are raised up by the moss which allows water to get underneath which will lead to damage of the roof sheathing. If you trap enough water next to the roof you will eventually get a leak. 
Corner of roof with heavy moss growth. Overlying tree branches providing shade and excess water, both conducive to moss growth.
Corner of roof with heavy moss growth. Lots of opportunity for moisture to sit and damage the underlying roof. The tree branches just above the roof aren't helping the situation. They provide shade and can drip water in the same area.
Clean roof after clearing of moss with a push broom.
Same corner of root after cleaning. 10 minutes of work with a push broom removed the moss. Now the gutter needs to be cleaned.
The pictures above are the same area before and after cleaning. This corner of the roof had heavy moss growth from a few years of neglect. The tree branches that hang above this corner aren't helping. They provide shade and an extra source of water from dripping branches. 

It just takes a few minutes of work with a push broom to get all the moss off the shingles. You do have to be a bit careful to avoid taking all the granules off the shingles. Moderate pressure with the broom is all that is needed. Too heavy of a push and you can damage the shingles. 

DON'T USE A PRESSURE WASHER. Seems like it would be a lot easier but if you use a pressure washer you are guaranteed to damage the shingles and shorten the life of your roof. 

You can't see it in the pictures but the last step is to sprinkle a moss preventer on the clean shingles. I like to use the shaker bottle of Moss Out. A 6 pound container will take care of most roofs. This should be repeated every year to maintain a moss free roof.
Roof after cleaning of moss and pine needles.
Left side of roof after cleaning. No more moss or piles of pine needles. This roof needs to be kept clean of debris and have a moss preventer applied every year.

Comments are closed.

    Author

    Brian Jovag, owner of Jovag Home Inspection.

    Archives

    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017

    Categories

    All
    Attic
    Brick
    Chimney
    Construction
    Corrosion
    Crawl Space
    Deck
    DIY
    Electrical
    Furnace
    Gutters
    Heating
    How To
    Information
    Insulation
    Jovag Home Inspection
    Maintenance
    Moss
    Needs To Be Fixed
    Plumbing
    Roof
    Rust
    Safety
    Smoke Alarms
    Tools
    Video
    Wall
    Water Damage
    Water Heater
    What Could Go Wrong?
    Yard

    RSS Feed

    Helpful Info

    Infographics
    CPSC Water Heater Temperature
    File Size: 49 kb
    File Type: pdf
    Download File

    CPSC Garage Door Safety
    File Size: 129 kb
    File Type: pdf
    Download File

    CPSC GFCI Info and Facts
    File Size: 263 kb
    File Type: pdf
    Download File

    FEMA Smoke Alarm Recommendations
    File Size: 1942 kb
    File Type: pdf
    Download File

Site powered by Weebly. Managed by MacHighway