Perth’s unique climate brings plenty of sunshine, salty coastal air, and the occasional heavy downpour—conditions that can take a real toll on your roof. Over time, dirt, algae, lichen, and moss begin to accumulate on roof tiles and metal sheets, accelerating wear and tear if left untreated. Regular roof cleaning can help extend the lifespan of your roofing materials and save you from costly repairs down the track.
Why Roof Cleaning Matters in Perth
Living near the coast means Perth homes are regularly exposed to salt carried by ocean winds. For metal roofs, especially Colorbond, salt buildup can trigger corrosion and rust if not cleaned regularly. Lichen, in particular, causes damage to the Colorbond coating—and even after cleaning, it can leave permanent shadows and spots where the roots had attached.
On tiled roofs, organic matter like moss and lichen thrives in shaded or damp areas. These growths can lift or crack tiles, disrupt water flow, and eventually lead to leaks or structural issues.
Roof cleaning also ensures proper drainage. Clogged valleys and blocked gutters from rooftop debris can cause water pooling and overflow during Perth’s heavy winter rains. Keeping your roof clean allows rainwater to flow safely away from your home.
Tiled vs. Metal Roofs – Different Needs, Same Care
Tiled roofs require care during cleaning to prevent damage. High-pressure water can crack or dislodge tiles if used incorrectly. For this reason, soft washing—using low pressure combined with professional-grade treatments—is often preferred.
Metal roofs, such as Colorbond, benefit from the removal of contaminants like dirt, mould, and oxidisation. However, it’s important to note that a residual treatment may be used over time to clean the roof and prevent any future growth of moss or lichen. This type of treatment helps keep the surface clean without allowing regrowth.
Why Choose Exterior Cleaning WA?
At Exterior Cleaning WA, we specialise in professional roof cleaning tailored for Perth’s unique conditions. Our experienced team uses safe and effective techniques based on your roof type—whether it’s concrete tiles, terracotta, or Colorbond steel. We remove built-up debris, eliminate organic growth, and restore your roof’s appearance—while protecting the materials underneath.
We no longer use environmentally friendly detergents, as they don’t deliver the long-term protection needed for Perth’s harsh conditions. Instead, we focus on treatments that offer lasting cleanliness and defence against regrowth.
As a locally owned and operated business, we understand the specific maintenance needs of Perth homes. We’re committed to delivering outstanding results and long-term protection for your roof.
Want your roof to last longer and look better?
Trust the team at Exterior Cleaning WA – Perth’s roof cleaning specialists.
Get a free quote today!