Mold and algae might look the same, but they have significant differences homeowners must be familiar with. Each one can cause possible damage to your roof, but they can also affect everyone’s health. Learn more about their differences in today’s post from renowned roofing company Howard Roofing & Home Improvements.
Algae on roofs is a common sight, primarily due to our humid summers. It often manifests as black or dark green streaks across the shingles. This discoloration is primarily caused by a type of algae known as Gloeocapsa magma. Unlike mold, algae is not directly harmful to your roof’s structural integrity, but it can drastically reduce its aesthetic appeal. Algae thrive in moist environments and are more likely to be found on the north-facing or shaded parts of your roof where sunlight is minimal, and moisture is retained.
Mold presents a more serious threat compared to algae. It not only detracts from your home’s exterior appeal but can also lead to structural damage and health issues for those living under the affected roof. Mold appears in a variety of colors, including black, green or even white, and can spread much more rapidly than algae. It tends to grow on roofs that have existing damage or areas that retain moisture longer than they should. Given the local weather, roofs often exposed to damp conditions without proper sunlight are at a higher risk of developing mold.
While both mold and algae can look similar from afar, especially given their propensity to create dark patches on roofs, expert roofers and mold remediation experts identify key differences exist in their appearance and the threat they pose. Algae are typically uniform in appearance and create streaks across the roof. In contrast, mold appears blotchy and can penetrate and damage the roofing material.
Moreover, algae do not pose a health risk to homeowners, whereas mold can be hazardous, especially for those with allergies or respiratory problems. If you’re unsure whether your roof is affected by mold or algae, it’s crucial to consult with a professional who can provide a definitive diagnosis and recommend the appropriate treatment.
Preventing and treating algae and mold on roofs is critical for maintaining their home’s aesthetic and structural integrity. Regular roof inspections can catch early signs of growth, allowing for easier and less costly treatment. For algae, solutions include installing copper or zinc strips to inhibit growth or applying specific algaecides designed for roofs. Meanwhile, mold removal often requires more intensive cleaning and sometimes even roof repair or replacement to address any underlying issues causing moisture retention.
For high-quality roofing solutions in St Louis, MO, you can always turn to Howard Roofing & Home Improvements, your number-one local roofing company. Call us at (636) 296-1057 or fill out this contact form to reach us.