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Roof plumbing & gutters

Roof leaks · Gutter replacement · Downpipes · Box gutters · Flashings · Valleys

If it only leaks when it rains, it is up here.

Water through a ceiling during a storm is almost never a burst pipe. It is a gutter that has rusted through, a box gutter backing up under the roof sheeting, a failed flashing, or a downpipe that stopped draining two winters ago.

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Three quick steps. Every enquiry answered within 12 hours. If it's urgent, call.

Thanks. We've got it, and we'll come back to you within 12 hours. If it's urgent, call Luke on 0423 213 079 or Zach on 0402 273 744.
How can we help?
24/7 Emergency
Water in the ceiling?
The short answer

Roof plumbing covers gutters, downpipes, box gutters, valleys, flashings and rainwater drainage on the roof itself. If water appears inside a building only during or shortly after rain, the cause is almost always roof plumbing rather than a plumbing leak. The most common causes are gutters blocked or rusted through, downpipes blocked or not connected to a drain, box gutters undersized or backed up so water rises above the roof sheeting, and failed flashings where the roof meets a wall, chimney or skylight. B&M Advanced Plumbing does roof plumbing across The Hills, the North Shore and the Northern Beaches.

Where roofs actually leak

The stain on your ceiling is rarely directly under the problem. Water travels along battens and beams before it drops.

If a ceiling is holding water and starting to bulge, keep people out from under it and call. Everything else can wait for a proper appointment.

How it works

How we find a roof leak

1

Ask when it leaks

Only in heavy rain, only with wind from a certain direction, or all the time. That distinction narrows the cause dramatically before anyone gets on a ladder.

2

Look inside first

The roof space tells the truth. Water tracks, staining on timber and rust marks show the path water has taken, and it usually leads somewhere quite different from the ceiling stain below.

3

Then inspect the roof properly

Gutters, downpipes, box gutters, valleys, flashings, penetrations and the condition of the sheeting or tiles. We are looking for the actual failure, not just the nearest suspicious thing.

4

Test it if we need to

Where a leak is intermittent, running water over a suspected area under controlled conditions is often the only way to be sure. Better than guessing and charging you for a repair that does not fix it.

5

Fix the cause and check the whole system

Repairing one section of gutter on a roof where the rest is at the end of its life is a short-term result. We will tell you honestly which you are looking at.

6

Make sure the water gets away

A perfect gutter feeding a blocked downpipe into a drain that goes nowhere has not solved anything. We follow it through to where the water actually ends up.

What roof plumbing costs

Roof work is priced on access, height and how much has to be replaced rather than repaired.

We will tell you when a repair is genuinely worthwhile and when you are better off replacing a run. Chasing rust holes along a gutter that has reached the end of its life is a poor use of your money and we would rather say so.

Where we work

Roof plumbing across Sydney's north

Questions

Roof plumbing questions

The test is timing. If it only happens during or just after rain, it is the roof. If it happens in dry weather, it is plumbing, and if there is a bathroom or laundry above the stain then start there. If it happens in both, you may have two problems, which is less unusual than it sounds.
A box gutter runs within the roof rather than along its edge, typically in a valley between two roof sections or behind a parapet wall. Because it sits inside the building envelope, when it blocks or cannot cope with the volume, the water level rises above the roof sheeting and goes straight into the building. Standard eave gutters overflow harmlessly onto the garden. Box gutters overflow into your ceiling. They need to be kept clear and they need to be sized correctly.
It depends far more on your trees than on the calendar. Under mature gums or in the heavily treed streets on the Upper North Shore, twice a year is realistic, and more if you have a leafy summer. On an open block with nothing overhanging, every couple of years may be fine. What matters is that they are clear before storm season, not that you did it in a particular month.
Yes, and sometimes that is the right call, for example where one run has been damaged. Where we will push back is if the rest of the guttering is the same age and in the same condition, because you will be back for the next section shortly and you will pay the access cost again each time. We will give you both prices.
Yes, with appropriate access and safety setup. That setup is a genuine part of the cost on a taller or steeper property and we would rather quote it properly than turn up underprepared.
Salt air is the usual answer near the coast, and it is a real factor across the Northern Beaches. The other big one is debris. Wet leaves sitting in a gutter hold moisture against the metal continuously, which is far harder on it than rain ever is. Overhanging trees shorten gutter life through the whole Upper North Shore.
It can reduce how often gutters need clearing under heavy tree cover, which is the main reason people fit it. It is not maintenance-free, because debris still collects on top of it and it can hold moisture against the gutter if it is the wrong type or badly fitted. It is also relevant in bushfire-prone areas, where there are requirements about ember protection. Worth a conversation about your specific roof rather than a blanket yes or no.
Yes. That is the entire roof area's water being delivered next to your footings, every time it rains. It is one of the most common causes of damp, movement and water under a house, and connecting downpipes into proper stormwater drainage is one of the better value jobs available.
Yes, and it is worth doing on an older property. We can tell you the condition of the guttering, downpipes, flashings and box gutters, and whether there is evidence of long-term water entry in the roof space, which is where the story usually is.

Roof plumbing in Sydney's north: trees, salt and box gutters

Roof plumbing gets neglected because it is out of sight and because for most of the year it is not doing anything. Then a heavy storm arrives and it becomes the most important part of the building.

Follow the water, not the stain

The single most useful thing to understand about roof leaks is that water does not fall straight down. It enters at the failure point, runs along a batten or a rafter, sometimes for metres, and drops at the first place it can. That is why the wet patch on your ceiling is frequently nowhere near the actual problem, and why anyone who quotes a roof leak repair from inside the house without going into the roof space is guessing.

Box gutters are the ones to take seriously

A normal gutter at the edge of a roof, when it overflows, spills water down the outside of the building. Annoying, and bad for the footings, but it is outside. A box gutter sits within the roof, and when it backs up the water level rises above the roof sheeting and goes inside. They are common on older homes with parapet walls, on additions where two roof sections meet, and on flat-roofed extensions. If your building has one, keeping it clear is not optional maintenance.

Trees on the North Shore

The streets through Wahroonga, Turramurra, Pymble, Killara, Gordon and St Ives are known for their tree canopy, and that canopy fills gutters. Wet leaf litter sitting in a gutter holds moisture against the metal continuously, which corrodes it from the inside far faster than weather alone would. It also blocks downpipe outlets, so the gutter fills and overflows in the exact storm where you need it working. If you are under mature trees, gutters are a maintenance item rather than a fit-and-forget one.

Salt on the Beaches

Across the Northern Beaches, and especially on the properties closest to the ocean at Manly, Freshwater, Curl Curl, Collaroy, Newport and Palm Beach, salt-laden air accelerates corrosion of external metalwork. Guttering, downpipes, flashings and fixings all have a harder life there than they do inland. It affects both how often things need looking at and what materials are worth specifying when you replace them.

Bushfire-prone blocks

On the bush-fringe blocks around Terrey Hills, Belrose, Duffys Forest, Kenthurst and Annangrove, gutters full of dry leaf litter are an ember risk as well as a drainage one. If your property is in a bushfire-prone area there are requirements that affect roof and gutter detailing, so it is worth raising when you are getting work done rather than treating it as a separate topic.

Call Luke on 0423 213 079 or Zach on 0402 273 744, or use the form for an answer within 12 hours.

Roof or gutter problem?

Tell us when it leaks: heavy rain only, wind from one direction, or all the time. That detail genuinely narrows it down. Every enquiry answered within 12 hours.

Luke 0423 213 079 Zach 0402 273 744 admin@bmadvanced.com.au
The Hills, North Shore & Northern Beaches, NSW

We'll call you back

Three quick steps. Every enquiry answered within 12 hours. If it's urgent, use the numbers.

Thanks. We've got it, and we'll come back to you within 12 hours. If it's urgent, call Luke on 0423 213 079 or Zach on 0402 273 744.
How can we help?
☎ Call Luke ☎ Call Zach