Hints & Tips
Roof Algae Discoloration
pictures represent a worldwide problem that is common throughout most of the
United States and is very prevalent in the southeastern and northwestern
parts of the country. This particular problem was encountered approximately
35 miles outside of Kansas City, Kansas. The discoloration that you see is
the result of algae. The build-up of algae will expedite deterioration of
the roofing materials and can also raise energy costs. If the roof on a
building is white it will help reflect the sun's rays and keep the interior
of the building cooler. Roofs whose color is darkened by algae will absorb
the sun's rays which can heat the interior and raise energy costs.
|There are several
ways to alleviate this problem. One is to hose down the roof with diluted
bleach or chlorine. Bleach and chlorine are very effective but they can also
kill all the surrounding vegetation and cause a discomforting odor. Another
way is to install some algae-resistant shingles. But sometimes roofs that
look bad aren't necessarily ready for replacement.
There are two good ways
to solve the problem. Take a look at the following picture. Notice below
each penetration the roof is white like it’s supposed to be. This is because
when rain runs off of zinc,
it cleans the algae off of the shingles. Zinc strips installed along both
sides of the ridge will eventually clean the algae from the roof.
|Another good way
is to apply environmentally friendly chemical compounds for immediate
here for more information about removing algae from your roof.