Moss and algae growth on asphalt roofs is a serious problem in the Lower Mainland, drastically reducing the lifespan of your roof. Our region’s moist climate provides the perfect environment for moss and algae to thrive on your asphalt shingles.
At Absolute Roof Solutions, we’ve witnessed the damage firsthand and know that such intrusion will invalidate your shingle manufacturer’s warranty.
It is that serious.
Why are moss and algae a problem?
Moss and algae love your roof.
Our damp climate, frequent rainfall, and shaded areas create ideal conditions for the growth of moss and algae. Asphalt shingles provide the perfect rough surface for these organisms to cling to, especially in shaded, moisture-rich areas. While the initial appearance of moss or algae may seem harmless, ignoring their presence can have severe consequences.
How moss and algae damage your shingles
Moss growth can physically lift and separate shingles, breaking the adhesive seals and exposing underlying materials to moisture. Over time, this can cause shingles to become loose and brittle and more susceptible to wind damage and leaks.
Moisture Retention and Wood Rot – Moss retains water against your shingles, drastically increasing moisture levels. This trapped moisture can penetrate beneath shingles, saturating roof decks and support structures, which can cause wood rot and structural damage.
Rust and Corrosion – Moisture trapped by moss accelerates rust and corrosion of roofing nails and metal flashing. Rusted nails lose strength and grip, allowing shingles to loosen and increasing the potential for leaks and roof failure.
Algae and Shingle Decay – Though algae doesn’t physically lift shingles, it creates unsightly dark stains and degrades the protective granules on the shingle surface. This accelerates wear and tear, making your roof more vulnerable to sun damage and reducing its lifespan.
Preventing moss and algae damage
Prevention is key when protecting your asphalt roof from moss and algae. Periodic roof inspections and professional cleaning will control and remove early moss and algae growth before serious damage occurs.
Absolute Roof Solutions provides these services. With the right conditions, non-toxic professional cleaning solutions can remove moss and algae. Our process is explained in this article and is best done in the summer months.
Protect Your Roof Investment
Don’t underestimate the damage that moss and algae can do.
Absolute Roof Solutions provides comprehensive roof inspections and preventive maintenance plans to keep your roof free from moss and algae, extending its life and protecting your home.
