Roof Washing

Click to enlarge before and after photos


Next time you are out driving, pay attention to the roofs of houses and businesses.
Notice any discoloration? Black spots, Streaking?
Now look at your own roof. Do you notice those unsightly stain/streaks covering your
shingles? Have you ever wondered how this can be happening and what is causing it?
This problem is commonly found in the South. With it’s hot and humid climate, the south
can create a breeding ground for fungus growth. Fungi spread thru microscopic spores
that float through air. Once they find a surface, this is when the germination process can
begin, creating the black streaks/spots on the shingles.
The spores that settle on the north facing side of the roof typically stand a better chance
of survival because it is normally the last part of the roof to dry after rain or morning
dew. Once the sun heats the roof, the moisture trapped around the base of the granules
begins evaporating. This raises the humidity on the surface of the shingles, thus
creating a perfect breeding environment for fungi. The tar used in the manufacture of
asphalt shingles is fossilized, dead organic matter. This is the specific food source
needed to support the fungus.
The roof area generally represents 40-50 percent of the total front elevation. If fungus is
covering this much area, it will certainly create a major impact on the overall
appearance of the home. Fungus covered roofs are unsightly and make your home look
prematurely old.
Replacing your roof is not always an option. Environmental Studies show that if you
replace your roof, you could see the black stuff back on your roof as early as six (6)
months – even with fungus resistant shingles.


First, think about your health: A roof covered in fungus and algae is not only an eyesore,
but it is also unhealthy. The fungus can be tracked into the home affecting people with
allergies and respiratory problems.
Now let’s breakdown what happens when algae and fungus cover the material
protecting your roof: The shingles. When the algae and fungus grow on your roof, they
eat away the base of the shingle. The algae and fungus can also expand and contract
with the outside temperature. This growth and movement can loosen the granules,
creating premature granule loss, dramatically shortening the life of your roof. In
addition, the fungus covering the roof keeps the temperature under the roof a lot higher
by preventing the reflective capabilities of the granules from doing their job. These high
under-roof temps can make the AC unit work harder. This could lead to an increase in
your electric bills, or possibly even over working the unit itself.

Cleaning your roof adds value to your home, can reduce energy costs, and extend the
life of your roof. And with 3S Pressure Washing, we help you accomplish this easily and