Sealing fibre-cement · Perth
Fibre-cement is cement. So we seal it like it.
JUMBOGUARD is the one and only next-generation sol-gel surface coating in Australia, and nothing else works like it. On cladding, eaves and fencing it anchors into the mineral surface, stays breathable, and keeps the sheet shedding grime and mould instead of holding it. Sealed once, under a 10-year registered guarantee.
What goes wrong
Fibre-cement does not fail loudly. It just goes grey and green.
Modern cladding, weatherboard-look sheet, eaves linings and fibre-cement fencing are everywhere in Perth because they are tough and stable. But the raw sheet is a porous cement composite, and left bare it drinks in water, grime and spore. The south wall and the shaded eaves go green. The reticulation overspray leaves a white bloom on the fence. It creeps, so most people do not notice until the whole elevation looks tired.
Damp and shade
It goes green and black
Mould and algae feed on the moisture and grime a porous sheet holds. Shaded eaves, south-facing cladding and the low run of a fence line are where it takes first, and a bare surface gives it everything it needs to grip.
Reticulation and salt
White blooms and staining
Bore water and reticulation overspray carry minerals and salt onto fencing and lower cladding. As water moves through a cement sheet it can carry salts to the face, leaving efflorescence, and near the coast the salt load is relentless.
The wrong fix
A film that traps the damp
The usual answer is a paint or acrylic film laid over the top. It looks good for a season, then it caps the moisture the sheet needs to release, and it blisters, chalks and peels under the sun. Once a film fails on cladding it has to come off before anything else can go on.
How our coating protects it
It does not sit on the sheet. It bonds into it.
Fibre-cement is bound by the same Portland cement that binds concrete, and that is the whole reason it seals so well. Our sol-gel coating grafts to the cement chemistry at the surface exactly as it does on a concrete driveway, then cures into a dense inorganic network right where the weather hits.
Anchors into the mineral surface
Because the sheet is cement-bound, the coating forms a genuine bond into the surface and pore structure, not a film balanced on top. There is nothing sitting on the face to chalk, blister or peel.
Protects where the weather lands
The protection lives at the surface, exactly where sun, rain, spore and grime act, as a nano-thin mineral network. Not hidden down a pore where the beading you can see fades long before the sealer has left.
And the cladding still breathes
This is the one that matters most on a wall. Because the coating works at the surface instead of plugging the pores, moisture can still escape. It will not trap the damp behind the sheet the way a film does, so it protects the face without setting up the blistering and efflorescence a film causes.
The edge that lasts
A wall is not tested by rain. It is tested by the years.
Cladding, eaves and fencing sit out in full Perth sun, get hosed down, and cop whatever the reticulation and the coast throw at them. Our protection sits at the surface, where all of that lands, so it holds up on the axes that actually age a cement sheet.
Sun
It does not yellow or chalk
Sun is what kills most coatings on a wall. Because ours is an inorganic mineral network, it does not carry the chemistry that makes an organic film chalk, blush and go patchy under UV. It is far more UV-resistant than a film, holding its look on the north and west elevations that punish everything else. Not UV-proof, but built for the sun that ages the rest.
Grime and spore
Green and grime lift instead of grip
Mould and algae feed on trapped moisture and dirt. A breathable, water-shedding surface gives them far less to grip, so growth is slower to take and what does appear washes off with a hose or a soft brush instead of a scrub. No coating stops mould outright, but this keeps a green wall a quick clean rather than a repaint.
Cleaning
Stable through the wash-down
Eaves and cladding get cleaned with alkaline house-wash and the odd pressure rinse. The bonded inorganic surface stays stable through routine cleaning, more resistant than a pore sealer that breaks down from inside the sheet. It is more resistant, not immune, and it renews with a top-up rather than a strip.
Fallout and marks
Atmospheric oil sits on top
Road film, exhaust haze and the oily grime that settles on a fence line near a driveway sit on the surface and lift in cleaning instead of soaking into the sheet and setting. So the marks that used to darken a bare fence over the years wipe away instead.
Proven, not promised
One price. One coating. On the record.
Fibre-cement seals as a cement-bound surface, so it is priced the same clean way as the rest: all-in by area, with the guarantee registered on completion. No itemised prep, no per-elevation surprise.
- Cement-bound, so it anchors like concrete. The same Portland-cement chemistry our coating grafts into on a driveway is what binds the sheet, which is why the fit is strong.
- Breathable and colourless. It protects the face without trapping the moisture behind the cladding, and it changes nothing you can see: same colour, same finish, same feel.
- Tested where it counts. The JUMBOGUARD chemistry is checked at independent houses including TÜV Rheinland, SGS, Intertek and REACH, and every job is registered under a 10-year guarantee.
Where we tell you straight
A strong fit, with two honest limits.
If it is already painted, it is not our job
Our coating bonds to the mineral surface, not to a paint film. Most cladding leaves the factory pre-coated or gets site-painted, and we cannot improve a paint layer by sealing over it. We are for raw or weathered mineral fibre-cement. If yours is painted, we will look at it and tell you plainly rather than sell you the wrong thing.
A coating protects the face, not the flashing
Sealing the surface slows staining, mould grip and mineral bloom, and makes the sheet far easier to keep clean. It does not fix water getting in behind poor flashing or a failed joint, and near reticulation and the coast the salt load is a substrate and water issue, not something a surface coating cures. Against a trapping film we hold up far better, but we will always name the limit.
The honest version: on sound, raw or weathered fibre-cement, this protects well and keeps the elevation easy to maintain for years. That is exactly what the strong grading means.
Common questions
Fibre-cement, answered.
Can you seal fibro and fibre-cement cladding?
Yes. Fibre-cement is a cement-bound sheet, so it takes our MineralProtect coating the same way concrete does. We seal cladding, weatherboard-look sheet, eaves linings and fibre-cement fencing across Perth metro. It is a strong fit because the cement chemistry is what our coating anchors into.
Will sealing stop my cladding going green or black?
No coating stops mould and algae outright, and we will not tell you it does. What it changes is grip: a breathable, water-shedding surface holds less of the trapped damp and grime they feed on, so growth is slower to take and washes off far more easily when you do clean. It turns a green wall into a quick wash-down rather than a repaint.
Can you seal fibre-cement that is already painted?
Our coating bonds to the mineral surface, not to a paint film, so painted or pre-coated sheet is usually not the right job for us. We protect raw or weathered mineral fibre-cement. If yours is painted, we will assess it and tell you straight rather than seal over something we cannot improve.
Does it change the colour or finish?
No. MineralProtect is colourless and non-pigmenting. Same colour, same finish, same feel. It does not wet-look or darken the sheet the way many pore sealers do, which matters on a whole elevation where any shift would show.
Will it trap moisture behind the cladding?
No, and this is the point. Because the coating works at the surface instead of laying a film over the pores, the sheet still breathes and moisture can still escape. A film that traps moisture is what causes blistering and efflorescence on cladding. Our coating protects the face while leaving the material free to breathe.
How long does it last, and is there a guarantee?
Two things, kept separate on purpose. One coat of MineralProtect performs for a good while, then eases back slowly rather than failing all at once, and it renews with a top-up on a clean surface, no stripping. The guarantee is registered for 10 years and sits on top of your Australian Consumer Law rights.
Go deeper
Other cement-bound surfaces we seal.
Fibre-cement is one of a family. If it is bound by cement, our coating anchors into it the same way.
Get a quote
Seal the cladding once. Keep it that way.
We will prepare and seal your fibre-cement with the right MineralProtect coating for the surface, registered under a 10-year guarantee. Confirmed price before you book.