Your roof is your home’s first line of defense against rainwater and the elements. Beyond the unsightliness of moss and algae growth on a new roof installation, these organisms could cause damage over time. If you’ve spotted greenery developing on your roofing, you may wonder how that happened and what to do about it. To help you care for your home, here’s all you need to know about moss and algae on asphalt shingle roofs.

The Negative Effects of Moss & Algae

Moss and algae are organisms that thrive in damp and undisturbed surfaces, making a roof prime real estate for them. While they look harmless, they may create issues for a new roof installation. Moss spores naturally occur everywhere in nature, and in the damper, cooler months, they develop into moss. As moss grows, it forms a spongy barrier on your roof that sucks up rainwater and traps it against the shingles. This moisture can eventually saturate the sheathing below, leading to mold growth and the deterioration of your roof‘s frame.

Unlike moss, which is thicker and capable of holding more moisture, alga is a thin, slimy layer that presents more of a cosmetic concern. When homeowners try to remove algae, they often inadvertently cause damage to shingles.

How to Prevent Moss & Algae on Your New Roof Installation

The best defense against moss and algae is prevention. As they both love shade and moisture, cut down or trim back trees that provide shady areas along the roof. Metal roofing systems are also resistant to these growths, so if you regularly spot them on your unit, consider switching to it. Since removal could cause issues, consult with a contractor to understand your options before trying to peel off these growths.

Turn to the skilled roofers at Ontario Exteriors for all your roofing needs. Servicing Rochester, NY, and the surrounding area, this crew of insured contractors upholds a firm commitment to quality craftsmanship. They provide new roof installation for pitched units, asphalt shingles, and metal roofing systems. They also work on home siding. Learn more about their services online or call (585) 421-0880 to schedule an appointment.