The Finest Minnesota Homes since 2007.
Why does your roof get dirty? And why wash it?
After about 5-10 years you may start seeing dark streaks, even moss, and lichen on your roof. (Especially on the NORTH side) This happens when the roof granules begin to wear away, exposing the asphalt layer to airborne spores. This alga called Gloeocapsa Magma will attach to your roof and spread.
Here are 4 reasons this should be taken care of right away.
1. It's an eyesore. This is usually the first thing that comes to homeowner's mind. While it is ugly having black streaks going up your shingles, it's probably the least important of the reasons.
2. Moss, lichens, even black algae can inhibit your shingles ability to reflect heat from the sun. This results in higher cooling costs during the summer.
3. Your shingle granules attach to a lime layer that holds the granules on. Algae on your roof speed up the aging process of your shingles. In some cases, insurance agencies have canceled homeowner policies due to this.
4. Your own health! Mildew and mold growth on and around your home is one of the leading causes of upper respiratory problems in children and older adults. Get rid of it and breath easier.
Why we "Soft Wash" your roof and never "Pressure Wash"
We often get asked, "what is the difference between pressure washing and soft washing?" A well equipped exterior cleaning service should be able to do either.
However, pressure washing should never be used to clean siding and especially not your roof! Plainly put, "soft washing" is a method used to remove organic growth from surfaces. Typically used in house washing, deck washing, and roof washing.
We lightly spray the shingles with a special mixture of soap and algicides made specifically for your particular roof. After this, we wait. Sometimes your roof will need multiple applications. After a few minutes, black streaks will slowly turn brown, then disappear. Green moss and lichen will slowly turn a light brown or white color, fall away, and die within a few weeks leaving your roof looking like new.