You may have noticed dark streaks on the roof surface of your Seattle home. This may be a sign of algae or mold. If so, this presents a whole set of other questions. Are either of these hazardous? When does the situation warrant algae and roof mold removal near me?
Algae and Mold: The Difference
Algae is similar to moss and thrives in sunlight and moist environments. It spreads through airborne spores and is especially common on home roofs containing asphalt shingles. Algae is more common than mold, and this is actually positive. Algae may be visually unappealing, but it doesn’t lead to extensive damage.
On the other hand, mold is much more cause for alarm. What makes mold so toxic is that it emits toxins that cause respiratory problems like coughing, headaches, and watery eyes.
How to Tell the Difference
Algae and mold are similar in appearance, with their black to brownish streaks. Viewing the roof from ground level isn’t enough to recognize the difference. Mold proliferates in hot and humid environments with a lack of ventilation. This makes areas like the attic and crawl spaces vulnerable. If you don’t see mold in these areas and only on the roof shingles, then you’re more likely dealing with algae.
Treatment for Roof Algae and Mold
Treatments for mold and algae are more or less the same. Prevention is the top remedy. Our professional recommendation is regular pressure washing conducted by a licensed contractor. Incorrect use of a pressure washer, mainly from using too high a setting, can cause damage to the shingles and roof membrane. Using too little pressure only removes loose debris.
Need University Place Roof Mold Removal Near Me?
Residential and commercial roofs alike can be susceptible to algae and mold. Whether you’re a home or business owner, leave it to Urbizo Bros Roofing for roof mold removal near me. We maintain roofs and offset conditions that leave surfaces prone to unsightly blackish streaks. Contact us to set up an appointment for a roof evaluation.
Trusted Roof Mold Removal Near Me
Quality roof replacement & repair in Edmonds, Seattle, Lynnwood,
Mill Creek, Mercer Island, Mukilteo & South Everett
Posted on January 22, 2026 | Published by Ignite Local | Related Local Business