5 Common Roof Issues in Brisbane Homes (and How to Spot Them)

Queensland weather can be unforgiving — especially on your roof.


With scorching sun, seasonal storms, and high humidity, Brisbane roofs take a real beating. Over time, even the best-installed roof can develop issues that, if left unchecked, lead to costly repairs.


Let’s walk through the five most common roof problems we see in Brisbane homes — and how to spot the warning signs before they turn into expensive damage.


1. Cracked or Shifting Tiles

What to Look For:

  • Visible cracks or missing pieces
  • Water stains on ceilings
  • Debris in gutters from crumbling tiles


2. Mould, Moss, and Lichen Growth

What to Look For:

  • Dark streaks or green patches on the roof
  • Slippery tiles when wet
  • Mould smells inside the home


In Brisbane’s humid climate, organic growth thrives — especially on south-facing slopes or under tree cover. While it may look harmless, moss traps moisture and causes tile deterioration over time.


 3. Rust on Metal Roofs

What to Look For:

  • Discoloured or flaking patches
  • Orange-brown stains around screws or joins
  • Loose or lifted sheeting


Uncoated or ageing metal roofs can begin rusting, especially near coastal areas. If caught early, rust can be treated during restoration — but left too long, it can compromise roof strength.


4. Failing Ridge Capping and Pointing

What to Look For:

  • Loose or missing mortar
  • Gaps at tile joins along the ridgeline
  • Small debris falling into gutters


Bedding and pointing keeps ridge tiles secure and watertight. In older roofs, this mortar breaks down and becomes brittle — creating gaps for water to enter.


5. Leaks and Hidden Moisture Damage

What to Look For:

  • Brown ceiling spots
  • Peeling paint on internal walls
  • Bubbling plaster or warped skirting boards


Sometimes, the leak is nowhere near the visible damage. Water can travel across beams or down insulation before becoming obvious — which is why roof inspections are so important.


“We often find that what looks like a small issue outside has caused hidden damage inside the roof cavity.”


What Should You Do If You Spot These Signs?

Don’t ignore them. Most roof issues start small — and stay manageable if caught early. At JMZ, we offer free roof inspections across Brisbane, so you can get clear answers without commitment.


We’ll check the entire surface, take photos, and explain any issues in plain language — no jargon, no pressure.


Why Choose JMZ for Roof Repairs in Brisbane?

  • Over 30 years of roofing experience in SEQ
  • In-house, licensed team (not subcontractors)
  • Repairs, restoration, and repainting in one place
  • Trusted by thousands of local homeowners.

Spotted signs of roof damage? Book a free inspection with JMZ Roof Restorations and get peace of mind before storm season hits.


November 14, 2025
Have you noticed your metal roof looking faded, flaky, or even patchy? Peeling roof paint isn’t just an eyesore — it’s a warning sign that your home’s biggest shield is vulnerable. In Queensland’s extreme climate, metal roof coatings break down faster than many people realise. Let’s look at why metal roof paint peels, what it means for your home, and most importantly, how to fix it properly so it lasts. The Real Reason Metal Roof Paint Peels in Queensland Most people assume peeling is just about age. But in reality, it’s a combination of: UV exposure : Queensland’s sun is brutal. Over time, UV rays break down the chemical bonds in roof paint, causing it to fade and flake. Poor preparation : If a roof wasn’t cleaned or primed properly before painting, the coating won’t bond — leading to early peeling. Inferior products : Some paints simply aren’t made for metal surfaces or don’t have UV protection. Moisture or rust under the surface : If rust wasn’t treated before painting, it keeps spreading beneath the coating. Signs Your Roof Paint Is More Than Cosmetic Patchy or streaky roof surfaces Rust spots beginning to show through paint Flakes in your gutters Water pooling around screws or seams These aren’t just visual issues. Left untreated, peeling paint leads to rust, weakened structural integrity, and eventually leaks. The Right Way to Fix a Peeling Metal Roof Quick fix paint jobs don’t last. Repainting a peeling roof without fixing the root causes is like putting new wallpaper on a crumbling wall. At JMZ Roof Restorations, we follow a professional, step-by-step process: Inspection : We identify all problem areas, including rust, water entry points, and coating failures. High-pressure cleaning : We remove dirt, chalk, mould and loose paint thoroughly. Rust treatment : We apply inhibitors where rust is active. Priming : Using purpose-designed primers for metal adhesion. Application of Roofcote : A flexible, UV-resistant membrane engineered for Queensland conditions. This isn’t just repainting — it’s metal roof restoration done right. How Long Will It Last? With the right prep and product, a restored metal roof can last 10–12 years before needing another coat. Cheaper options may start peeling again in 2–3 years — and cost you more long term. Why Roofcote Works Better Not all roof coatings are equal. JMZ is a certified Roofcote applicator — meaning we only use premium, proven membranes that are: Formulated for metal roofs Designed for heat and UV resistance Applied under strict standards for longevity Combined with our 30+ years of experience and no-subcontractor policy, you get peace of mind your roof will stay protected. Don’t Ignore the Flakes Peeling paint is your roof telling you something’s wrong. The longer you wait, the higher the risk of: Structural corrosion Costly leak damage Full roof replacement instead of restoration I f you’re seeing signs of deterioration, the best move is a free inspection .
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Waiting for a leak to fix your roof? Learn why regular roof maintenance in Brisbane prevents costly damage and protects your home long-term — with expert help from JMZ.
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Wondering whether to repaint or restore your roof? Learn the real differences, costs, and what’s right for your Brisbane home with expert advice from JMZ.
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Have a cracked roof tile? Learn the risks of DIY tile roof repairs and when to call a professional. JMZ explains how to fix it properly and stay safe.
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Thinking about roof coating in Brisbane? Discover how it protects your home from UV, water, and moss — and why Roofcote is built for QLD conditions.