Algae development might create staining on roofings causing black or brownish stains on a roof. This can alter the curb appeal of your home. Many of our customers here at M&Y Pittsburgh Roofing often misinterprets algae for mold, dust, residue, or tree droppings.
According to our partners over at CertainTeed, an industry leader for building products, algae is common throughout North America. Although the majority of roofs with a streaky appearance is algae-related, it is important to check with us so we can confirm whether your issues are due to algae or mold.
Mold Vs. Algae
Remember: Mold is very dangerous, and it’s better to be safe and call a professional than to assume your health wouldn’t be at risk. Our Roof Maintenance Checklist highlights the difference between mold and algae.
Dark streaks, brought on by algae, occur in differing levels throughout the United States, particularly in locations prone to dampness and humidity. It is most extensive in the eastern USA and frequently discovered on rooftops facing north.
Will I Need My Roof Replaced
Due to the Dark Streaks
Algae Causes?
No indication proves that asphalt shingles should be replaced due to algae. Dark streaking is most likely due to an aesthetic problem and typically impacts how your home looks to others.
How Do I Lighten Dark Spots on My Roof?
Your safety is at risk when cleaning or repairing a roof on your own. Wetting it with any cleaning solution can cause slippery conditions. It is imperative to wear slip-resistant shoes when cleaning or repairing your roof.
As always, when cleaning or repairing a roof of any kind, please consult a certified and/or licensed professional to determine whether your streaks are coming from algae or mold.
The Secret to a Roof Without Black Streaks &
Lightening Tips for Roof Algae
#1 – Lightening Mixture
Algae staining can be challenging to get rid of. However, lightening the algae by splashing watered-down chlorine bleach might be helpful.
#2 – Lightening Ratio
One-gallon of bleach to one-gallon water is the ratio we would suggest using to lighten the algae from your roof.
#3 – Never Power Wash
Power washing your roof can cause roof damage by loosening and removing the shingle granules.
#4 – Water it Down
After applying the bleach mixture and leaving it on for about 10 to 20 minutes, the roof must sprayed off with water.
#5 – Don’t Forget Your Shrubbery
Shrubs, grass, and bushes can die of the bleach wash. Spraying them off after treatment can prevent this.
#6 – Algae that Won’t Come Off
The stubborn and extensive build-up of Algae may need repeat bleach treatments.
The next time you replace your roof, the real solution to “the secret to a roof without black streaks” is to apply algae-resistant asphalt shingles.
Contact M&Y Pittsburgh Roofing for asphalt shingles that resist algae. We offer roofing products that inhibit algae to help minimize it’s growth.
