Did you clean your roof with chlorine?
If so, your shingle life was shortened because it will dry out and crack the shingles and fungus will grow sooner. It is interesting to note that some manufacturers recommend that roofs actually be cleaned with bleach or chlorine—of course, they are in the business of selling shingles, therefore, the quicker your roof succumbs, the quicker they will be able to sell you a new roof.
There are also all of the uncontrollable variables that help hasten algae/fungus staining. First, fungus will
always appear initially on the north side of the house and roof. This is because moisture stays there longer
and, algae/fungus needs three things to grow: moisture, heat and a nutrient. Other variables besides the direction your house faces are the type, grade and manufacturer of your shingles, whether you have a pond or pool nearby creating abundant moisture and how hot and humid the weather is.
Continuous warm weather promotes fungus growth. Also, if you have trees near your house and they shade the roof, that promotes quicker fungus growth. If you haven’t cleaned the leaves and pine needles off, that keeps your roof ripe for fungus growth too.
Our products are SAFE…for you and your roof.
Clean roofs also protect property values.
The answer is clean it immediately! Here’s why: As the algae and fungus grow on your roof, they eat away
the base of the shingle and expand and contract with the outside temperature. This growth and movement
loosens the granules, creating premature granule loss, dramatically shortening the life of your roof. A 25-
year roof may not even last 15 years if nothing is done. A fungus-covered roof not only is an eyesore but it is unhealthy as well; do you want fungus spores all over, around and in your home? And what about those people with allergies?