Why Are My Roof Tiles Turning Green?

If your roof tiles have started to develop a greenish hue, you’re likely dealing with moss or algae growth. At Storm Call Roofing Projects, we know how common this issue is for Brisbane homeowners, especially with the region’s humid climate. While it may start as a small problem, moss and algae can lead to significant damage if left untreated. Here’s why it happens and how to tackle it effectively.

What Causes Roof Tiles to Turn Green?

Green discolouration on roof tiles typically occurs when moss and algae thrive in damp and shaded conditions. Brisbane’s subtropical climate, combined with seasonal rains, creates the perfect environment for these organisms to grow.

Here are some key contributors:

  • High humidity levels, especially during wet months.
  • Excessive shade from overhanging trees or nearby structures.
  • North-facing roof slopes that receive less sunlight.
  • Debris build-up, like leaves and twigs, which trap moisture on the roof.

Why Is Moss Growth a Problem?

Moss and algae might seem harmless at first, but they can cause several issues for your roof and home:

  1. Structural Damage:
    Moss traps moisture against your tiles, which can lead to cracking, warping, or even water ingress. Over time, this can weaken your roof’s structure.
  2. Blocked Gutters:
    Moss can spread into your gutter system, causing blockages that lead to water overflow and potential damage to your home’s walls and foundation.
  3. Reduced Curb Appeal:
    A mossy roof can make your home appear neglected, detracting from its overall aesthetic appeal.
  4. Lower Property Value:
    If you’re planning to sell your home, a roof covered in moss can deter potential buyers, as it signals poor maintenance.
  5. Health Concerns:
    Moss and algae growth can contribute to mould and mildew inside your home, potentially affecting indoor air quality and causing respiratory issues.

How to Prevent Roof Tiles From Turning Green

At Storm Call Roofing Projects, we recommend these simple steps to keep moss and algae at bay:

  1. Regular Cleaning:
    Remove debris like leaves and twigs to reduce moisture build-up and shaded areas on your roof.
  2. Trim Overhanging Trees:
    Cut back branches to allow more sunlight to reach your roof and improve air circulation.
  3. Professional Roof Cleaning:
    Hire experts to safely remove moss and algae without damaging your roof tiles.
  4. Install Copper Strips:
    Copper naturally releases ions that prevent moss and algae growth. Installing a copper strip along the ridge of your roof can be a long-term solution.

Need Help With Your Roof? We’ve Got You Covered!

If your roof tiles are turning green, don’t let the problem worsen. Storm Call Roofing Projects offers professional roof inspections, cleaning, and repairs tailored to Brisbane’s unique conditions.

Contact us today for a free quote and let us help restore your roof to its best condition!

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Craig Glover

Storm Call Roofing Projects

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