Sealing roof tiles · Perth
Protect the tile, not just the look.
Concrete and clay roof tiles are porous. In Perth's sun and coastal air they soak up water, go green with moss and lichen, and slowly lose their surface. We seal them with JUMBOGUARD, the one and only next-generation sol-gel surface coating in Australia: a breathable, colourless layer that anchors into the tile itself so water rolls off and growth finds it harder to grip. It is not a roof repaint, and we will tell you plainly where its limits are.
What goes wrong up there
Your roof is porous, and it's drinking.
A roof tile leaves the factory with a thin surface coat. Twenty summers of Perth sun, wind-driven rain and salt air wear that coat off, and once it's gone the raw tile underneath is open and thirsty. That's when the trouble starts, and it feeds on itself.
It soaks up water
A sponge on your house
An open, weathered tile holds water instead of shedding it. A damp tile stays heavier, dries slower and gives everything that wants to grow a place to live. It also puts more work on the tile and the bedding than a tile that sheds cleanly.
It goes green, then black
Moss, lichen and algae
Moss, lichen and black algae only take hold where a surface stays damp. A thirsty roof is exactly that. Once it's established it holds even more moisture, lifts under tile laps, and the green turns to black streaks down the whole southern face.
The usual fix traps it in
The paint problem
The common answer is a thick acrylic roof coating that repaints the lot. It looks new for a while, then it caps the tile and seals vapour in. Moisture that gets behind it has nowhere to go, and when the film starts to fail it flakes and has to be stripped and redone.
The honest read: most roofs don't need repainting. They need the tile itself protected so it stops drinking, without wrapping the roof in a film that can't breathe.
How our coating works
It bonds into the tile, and still breathes.
The old category had two ways to seal a roof: a film painted on top, or nothing at all. We're a third way. JUMBOGUARD is a water-based mineral sol-gel that cures into the surface of the tile as a dense, colourless network, so it protects right where the weather hits and doesn't sit on top waiting to peel.
Anchors into the tile
Concrete tiles are cement-bound and clay tiles are fired mineral, both porous. The coating wicks in and cures into a mineral network keyed into the pore structure and bonded to the surface, so it's part of the tile, not a layer stuck on the face of it.
Sheds water at the surface
It lowers the surface energy of the tile, so rain beads and rolls off instead of soaking in. A tile that sheds water dries faster, and a roof that dries faster is a harder place for moss, lichen and algae to establish.
And it lets the tile breathe
Because it works at the surface instead of capping it with a film, water vapour can still move out of the tile. That's the difference that matters on a roof: you protect the surface without trapping moisture behind a membrane the way a thick roof paint does.
Where it earns its keep
A roof takes everything. It has to hold up.
Nothing on your property is worked harder than the roof. It bakes all summer, gets sandblasted by wind-driven rain, breathes salt off the coast and grows green in winter. Protection that lives at the surface, bonded to the tile, is built for exactly that. Here's where it wins.
Weathering & rain
Sheds the rain that wears tiles open
Wind-driven rain is what strips a tile's surface open over the years. A bonded coating sheds that water instead of letting it soak and scour, so the tile stays sound longer. And because it's built into the surface rather than sitting on top, the weather can't peel it off.
UV & heat
Doesn't yellow or chalk in the sun
This is where an organic roof paint gives up: months of Perth UV chalk it, fade it and start it flaking. Our coating is an inorganic mineral network, so it's far more UV-resistant than an organic film. It's not UV-proof and it's not permanent, but the sun doesn't break it down the same way.
Salt & coastal air
Stable in the salt air off the coast
Perth roofs breathe salt. A tile that sheds water keeps salt-laden moisture from dwelling in the surface, and the inorganic network stays stable through the routine wet and dry cycles a coastal roof lives with. More resistant, not immune, and we say so.
Moss, lichen & algae
Makes it harder for the green to grip
This is the roof-specific win. Growth needs a damp, water-holding surface. A sealed tile sheds water and dries faster, so moss, lichen and algae find it harder to take hold and slower to come back after a clean. It isn't a biocide and it won't keep a roof green-free forever, but it changes the odds.
What you actually get
Cleaned, sealed, and on the record.
We don't paint over a dirty roof. We clean the tiles back to a sound surface first, then seal them with the right coating for the material, and register the job under a 10-year guarantee. One price, measured off your roof, confirmed before you book.
- Cleaned first, then sealed. The coating bonds to a sound, open tile, not to the moss and grime that were sitting on it.
- Breathable and colourless. The roof looks like clean tile, not painted tile, and moisture can still escape the surface.
- Registered under a 10-year guarantee. Documented to your address and backed by the JUMBOGUARD Performance Guarantee on the water-repellency function.
Straight about the limits
What sealing a roof won't do.
A roof is a moderate fit for us: we protect the tile well, but a sealer is not everything a roof might need, and pretending otherwise would just cost you money. Here's the honest line.
It's not a recolour
If your tiles are badly faded and you want the colour back, that's a roof-restoration coating, a different product and a different job. Ours is colourless: it protects the tile you have, it doesn't repaint it.
It's not a moss killer
It makes it harder for growth to take hold, but it's not a biocide and it won't strip existing moss on its own. We clean the roof first; the seal then helps it stay cleaner for longer. Nothing keeps a Perth roof green-free forever.
It's not a repair
Cracked tiles, failed bedding and pointing, or a leak are a roofer's job, not a sealer's. We seal sound tiles. If the roof needs repair first, we'll tell you before we quote to seal it.
It's long-lasting, not permanent
It wears slowly and tops up over itself without stripping, but it's a treatment that renews over time, not a one-and-done. When the water stops beading, that's a prompt to have it re-tested, not proof it has failed.
The questions we get
Roof sealing, answered.
Can you seal both concrete and clay roof tiles?
Yes. Both are porous mineral surfaces, so the coating anchors into the tile and pore structure to form a breathable, colourless layer that sheds water. It works on concrete tiles and clay tiles alike. What it is not is a roof-restoration paint: it protects the tile you have, it doesn't recolour a faded roof.
Will sealing stop moss and lichen coming back?
It makes it harder for moss, lichen and algae to take hold, because they need a damp, water-holding surface, and a sealed tile sheds water and dries faster. It is not a biocide and it does not kill existing growth. We clean the roof back first, then seal, so it stays cleaner for longer.
Nothing keeps a Perth roof green-free forever, and we won't tell you otherwise. What sealing does is slow the return and make the next clean easier.
Does sealing trap moisture in the tiles?
No, and this is the key difference from a thick roof paint. A film caps the tile and seals vapour in, so moisture behind it has nowhere to go. Our coating works at the surface and leaves the tile breathable, so vapour can still move out. You protect the surface without wrapping the roof in a membrane that can't breathe.
Will it change the colour or add a shine to my roof?
No. It's colourless and doesn't add a sheen or a film, so a sealed roof reads as clean tile rather than painted tile. If your goal is to bring the colour back on a faded roof, that's a roof-restoration coating, which is a separate product and job to what we do.
How long does roof sealing last?
It's a long-lasting treatment, not a permanent one. Being an inorganic mineral coating, it doesn't chalk or yellow the way an acrylic film does, and it tops up over itself without stripping when it's eventually due. Every job is registered under a 10-year guarantee covering the water-repellency function. When the water stops beading, that's your cue to have us re-test it, not proof it has failed.
What does roof sealing cost in Perth?
Our sealing is $16 per square metre, all-in, with a $950 minimum, and we confirm the price before you book. A roof is a large area, so we measure it properly and give you a fixed number rather than a rough estimate.
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Get a quote
Stop your roof drinking.
We'll clean your concrete or clay tiles back to a sound surface and seal them with the right JUMBOGUARD coating, breathable and colourless, registered under a 10-year guarantee. Measured off your roof, priced before you book.