Rusty gutters: when cleaning stops being the answer
Rust means one of two things. Surface staining and flaking on a sound trough is cosmetic — clear the wet leaf litter holding moisture against the steel and it stops progressing. Pinholes, weeping joins or daylight through the back edge is a roof plumber's job, not a cleaner's. Schmick gutter cleaning starts at $180; we clean, photograph and tell you honestly which one you have.
Wet leaves are the corrosion, not just the blockage
A gutter does not rust because it rained. It rusts because it stayed wet. Leaf litter — jacaranda, eucalypt, pine needles, roof grit — packs down into a sodden mat that behaves like a poultice, holding water against the steel long after the sky clears. On the North Shore, under mature trees, that mat can sit there for months at a time. Steel copes with wetting and drying. It does not cope with permanent damp.
That is the part homeowners underrate. A blocked gutter overflows, which is annoying and visible, and it gets dealt with. A half-full gutter never overflows at all — it just carries a permanently damp bed of compost along the base of the trough, quietly working through the coating. The overflow is the symptom people act on. The slow corrosion underneath is the one that decides whether the gutter gets replaced in five years or twenty-five.
Rust starts at the back edge and the joins
Rust is predictable about where it begins. The back edge — the side tucked against the fascia — is the lowest, darkest, least ventilated part of the trough, and it is where wet litter settles hardest. Joins are next: every lap, rivet and silicone seam is a place where the coating is interrupted and two pieces of metal sit tight together with moisture wicked between them. Corners and downpipe outlets, where debris naturally collects, run a close third.
Which is why standing in the yard tells you nothing. From the ground you see the front lip, the one face that dries fastest and looks respectable for years after the back of the same gutter has gone lacy. The only honest inspection is from above, along the length of the run, with the litter cleared so the base of the trough is actually visible. Until it is clean, nobody — us included — can tell you what condition the steel is in.
Pinhole rust drips where nobody is looking
Once corrosion punches through, you rarely get a dramatic leak. You get pinholes — a scatter of tiny perforations along the back edge that weep rather than pour. And because they sit behind the fascia line, the water never falls clear of the house. It tracks down the back of the fascia board, into the eaves, along the top plate and sometimes into the wall cavity, doing its work out of sight for a season or two before anything shows.
The tells are mostly indoors or at the edges: a stained eaves lining, paint lifting on the fascia, a musty patch in a top-floor cornice, a strip of soil under the eaves that never dries. This is also where the insurance question bites. Suncorp is explicit that insurers can decline water-damage claims where the cause is poor maintenance, blocked gutters included — so a leak traced back to years of packed litter is a conversation worth avoiding.
Cleaning stops rust; it cannot reverse it
Here is the split we will be straight about. Clearing the litter removes the cause, so a trough with surface rust, staining or some flaking on otherwise sound steel will stop getting worse and can keep doing its job for years yet. That is a cleaning problem, and it is worth doing properly: every metre cleared by hand, the debris bagged and taken away, downpipes flushed and confirmed running rather than assumed.
What cleaning cannot do is put metal back. Pinholes, weeping joins, a soft crumbling back edge, or daylight visible through the base of the trough mean that section is finished. Patching compounds and gutter tape buy a wet season, not a decade. That job belongs to a roof plumber, who will replace the run and, ideally, work out why it failed — a fascia with no capping, a valley dumping onto one short run, or simply twenty years of leaves.
We would rather report it than sell you a clean
So the sequence is clean first, report second. You get photographs of every run, before and after, including the back edge you cannot see from the ground, and a plain read on what is there: sound, surface rust worth watching, or rusted through and needing a plumber. If it is the last one, we say so, and we will not put you on a recurring clean for a gutter that is on its way out. Losing that job is cheaper than pretending.
If the steel is sound, keeping it that way is a rhythm rather than a rescue: clear once the leaf drop finishes and again before storm season, so the litter never gets months to sit. Schmick gutter cleaning starts at $180, with most single-storey homes landing between $220 and $430 by gutter length, and a second storey adding about 50%. The instant quote turns your address into a firm, bookable price in about 60 seconds. The report comes with it.