Gutter cleaning on the North Shore

What's included in a gutter clean?

A proper gutter clean means every external gutter run is emptied by hand or with a gutter vacuum, the debris is bagged and taken away, and each downpipe is checked so water actually leaves the roof. Downpipes are part of the job: a spotless gutter that drains into a choked downpipe will still overflow in the first heavy shower, so the outlets matter as much as the troughs.

Here is what the visit covers as we quote it:

• Every run, front and back. That includes the garage, carport, porch and any lean-to gutters that are easy to forget because you never see them from the street.
• Downpipe outlets. Most blockages start where the gutter drops into the downpipe. The crew clears the outlet and any leaf trap or rain head, then runs a little clean water through to confirm it drains.
• Debris out, not down. Leaves, moss, sludge and roof grit go into bags and leave with the crew.
• A look at condition. Loose brackets, sagging sections, rust holes and leaking joints are noted, with photos where they help, so you can decide what to do next.

A few things sit outside a standard clean. Washing the outside face of the gutters (the grey “tiger stripes” that build up on the front) is part of a house wash. Treating moss on the roof itself is a separate job. Internal or box gutters on some modern houses take longer and are priced on their own. Spouting repairs, re-hanging and leaks are trade work: we can point you to a spouting specialist or licensed roofer rather than patch them.

How often do gutters need cleaning?

For most North Shore homes, gutters need clearing once or twice a year. Twice is common: once in late autumn after the leaf drop and again in late spring or early summer before the heavy storms. A house under pōhutukawa, pines, gums or native bush may need three or four visits a year, while a newer home with no trees nearby can often go twelve months or longer between cleans.

The trees around your section decide the timetable far more than the age of the house. What they drop, and when, matters:

• Pōhutukawa. Te Ara notes the trees flower around December. The spent red stamens fall as a fine mat that holds water and packs into corners, and the seed capsules follow.
• Pines. Needles knit together into a sieve that catches everything else, then rot down into a dense sludge.
• Gums. Eucalyptus leaves and strips of bark are long and tough, and they lodge across downpipe outlets.
• Deciduous street trees. Oaks, planes and liquidambars drop most of their leaves over a few weeks in autumn, which is why late autumn is the busiest time for gutter work.
• Native bush. Bush-edge streets in suburbs such as Birkenhead, Glenfield and Greenhithe get a steady fall of small leaves and twigs year round, plus moss and lichen from damp, shaded roofs.

A simple check helps you judge it. After the first heavy rain of autumn, walk around the outside of the house. If water is spilling over the gutter edge, splashing onto paths or leaving a downpipe dry while the roof is streaming, the gutters are overdue.

Signs your gutters are blocked

The clearest sign is water spilling over the gutter during rain, especially over the back edge where it runs down the fascia and into the wall rather than out onto the garden. Other signs are dark streaks on the fascia or cladding, grass or seedlings growing in the gutter, a downpipe that stays dry in a downpour, and gutters sagging under the weight of wet debris.

Some signs are easy to miss from the ground:

• Overflow at the back. Water that spills over the back edge runs behind the gutter and down the fascia. It is the overflow that does the damage, and from the ground you often can't see it happening.
• Tide marks and staining. Brown or green streaks under the gutter, on soffit linings or down weatherboards, show where water has been running.
• Plants. A gutter growing grass has enough soil in it to hold water for days.
• Gurgling or splashing. A downpipe that gurgles then goes quiet, or water hammering onto a path, points to a partly blocked outlet.
• Damp patches inside. A stain on a ceiling near an outside wall, or paint bubbling on a window frame below a gutter, is worth checking from outside after rain.

The diagram shows the difference. A clear gutter carries roof water along to the downpipe and into the stormwater system. A blocked one fills up and spills, often at the back edge, where water soaks the timber you can't see.

What happens if you don't clean your gutters?

Blocked gutters push roof water where the house was never designed to take it. Overflow at the back edge can soak the fascia, soffit linings and the top of the wall framing. Overflow at the front lands beside the foundations and can pond against the house. Wet, rotting leaves also hold moisture against steel gutters, which speeds up rust, and standing water gives mosquitoes somewhere to breed.

How much harm a blockage does depends on the house. A weatherboard bungalow with wide eaves may cope with a wet season of overflow with little more than staining. A house with narrow or no eaves has much less margin, because the water runs straight down the cladding and into any gap it finds. Either way, timber that stays damp for months is where rot starts.

Weight is the other problem. A full gutter of waterlogged leaves and sludge is heavy, and over time it pulls brackets loose and lets sections sag. A sagging gutter then holds even more water, so the problem feeds itself until someone re-hangs it.

Mosquitoes are a real nuisance in Auckland's warm, wet months. Health New Zealand's mosquito advice includes checking that gutters and drains are clear of leaves and blockages, because a few centimetres of still water in a sagging run is enough for them.

Where does the debris go?

Out of the gutter, into a bag and off the property with the crew, never flushed down the downpipe. Leaves, moss, sediment and roof grit washed into a downpipe go into the stormwater system, which in Auckland leads straight to streams, rivers and the sea. Auckland Council's guidance says contaminants must not enter stormwater through downpipes or drains, and it holds landowners responsible for work on their land.

The rule comes from the Resource Management Act 1991. Auckland Council's guide on preventing pollution from water blasting explains that discharging any substance into the stormwater system is illegal unless a consent or plan allows it, and that infringements run up to $2,000 for individuals and $4,000 for companies. It names moss, sediment, algae and paint chips among the contaminants that cause harm.

On a gutter job, that shapes how the work is done:

• Debris is scooped or vacuumed out and bagged, not hosed along the gutter towards the outlet.
• A blocked downpipe is cleared from the top or at an access point, with the plug pulled out rather than pushed down into the underground pipe.
• The flow check uses a small amount of clean water, only after the gutter has been emptied.
• Anything that drops onto paths or decks is swept up rather than washed into a drain.

If you'd like the leaf litter for your compost, say so when you book and the bags can be left by your bins instead.

Gutter fall and pooling

Gutters should slope steadily towards each downpipe so water never sits still. The Building Code's Acceptable Solution E1/AS1 keeps it simple: “Roof gutters shall fall to an outlet.” It doesn't set a minimum fall figure for ordinary external gutters. In practice, water that pools in the same spot after a clean usually means a bracket has dropped or the run was hung too flat.

You can read the current E1 documents on building.govt.nz. For homeowners, the practical point is that a gutter needs a continuous, even fall with no dips. A dip of a few millimetres holds a puddle that never drains, and a puddle collects silt every time it rains.

Pooling is easiest to spot straight after a clean, when the gutter is empty and a little water shows exactly where it sits. The crew notes any low spots and photographs them for you. Standing water in the same place shortens the life of steel gutters, attracts mosquitoes and makes the next blockage come sooner.

Fixing the fall means unclipping and re-hanging the affected section, which is spouting work rather than cleaning. We can point you to a spouting specialist for that, and a clean first makes their quote easier because they can see the problem.

What gutter cleaning costs

Clearing the gutters on a typical three-bedroom single-storey home costs around $220 to $350, going by published Auckland prices. Small, easy homes can come in under that, while large or two-storey homes with long runs can reach $450 to $700. Internal gutters, steep roofs, existing guards and badly blocked downpipes add time. We’ll confirm the figure once we’ve seen the house.

A guide only, built from figures Auckland gutter cleaners and cost guides publish (checked October 2026). Internal gutters, steep or high roofs, gutter guards that need lifting and long-neglected gutters push a job towards the top of its band. We confirm your price after seeing the house.

How a gutter clean runs

1. You tell us your suburb, how many storeys, and whether trees hang over the roof. We ring back, talk it through and arrange the quote.
2. The crew sets ladders on firm, level ground for each side of the house. Higher or steeper roofs need edge protection or fall restraint, which the contractor plans before work starts.
3. Every gutter run is emptied by hand or with a gutter vacuum, and the debris goes straight into bags.
4. Downpipe outlets, leaf traps and rain heads are cleared, then a little clean water confirms each one drains.
5. Paths and decks underneath are swept, the bags leave with the crew, and you get a note of anything worth repairing.