The worst gutter I have cleared had a wattle growing in it. Not a seedling, an actual small tree, about knee height, roots into two seasons of compacted gum leaf. The owner had been in the house eleven years and had never been up there, because from the ground it looked fine. Gutters always look fine from the ground.
She asked the question everyone asks, which is how often this should be happening. The honest answer is that it depends on what is growing over your roof, and most people can work out their own number in about a minute.
Twice a year is the baseline, not the rule
Two clears a year suits a house with nothing much overhanging it. One in autumn after the worst of the leaf drop, one in spring before the storms. That is what we quote as a starting point on the exterior cleaning page and it is right for maybe half the houses we see.
The other half have gums. Eucalypts do not drop their leaves politely in one season, they shed year round, and the leaves are narrow enough to slip past most gutter guard and stiff enough to knit into a mat that holds water like a sponge. A house on the escarpment side with mature gums over it needs three or four clears a year, and I have a couple of places up behind Austinmer that are genuinely quarterly.
Then there is bark. Stringybark and ironbark shed strips that curl into the gutter and sit across the outlet like a plug. One strip in the wrong spot does more damage than a whole gutter of leaf, because the leaf still lets water through and the bark does not.
What the blockage actually wrecks
This is the part worth understanding, because it changes how urgent the job feels.
A blocked gutter fills, and then water backs up over the inside edge rather than the front lip. The inside edge is the one against the house. Water goes over it, straight onto the fascia, and from the fascia into the roof edge, the eave lining and the top of the wall cavity. It does not come out the front where you would see it running.
So the first sign is rarely water. It is paint lifting off the fascia board, or a soft patch in the eave lining, or a stain on the internal wall about a metre down from the ceiling. By the time you get that, the water has been going in for a season or two.
Rot in a fascia is not a disaster if you catch it. Rot in the roof framing behind it is a different conversation entirely, and the gap between those two situations is usually about eighteen months of ignoring it.
The bushfire angle
If you are anywhere with bush behind you, and a fair bit of the Illawarra and Shoalhaven qualifies, dry leaf sitting in a gutter is ember fuel on top of your house. The NSW RFS puts "clean your gutters of leaves and twigs" on its prepare your property list for exactly that reason.
That moves the timing rather than the frequency. If bushfire is a real risk where you are, you want the clear done heading into summer, not in March when it no longer matters.
How to check without getting on the roof
You do not need a ladder for the first look. Stand back from the house after decent rain and watch where the water comes off. Overflowing at a join, running down a wall, or a downpipe that stays dry while the gutter beside it is full — all of those mean a blockage, and the dry downpipe is the clearest signal of the three.
Gutter plants are the other giveaway. Anything green growing along the gutter line means there is enough soil up there to hold moisture between rains, and that is years of accumulation rather than months.
The one that catches people is a gutter that looks clean but is still slow. Sludge sits below the front lip where you cannot see it from the ground, and it is heavy, wet and about the consistency of potting mix. Plenty of gutters we clear look fine from the driveway and come out by the bucket.
What we do and where it stops
Clearing is maintenance. We take the debris out, flush the runs, check the outlets and tell you what we saw up there.
What we do not do is repair, replace or reseal any of it. Guttering, downpipes and flashings are roof plumbing in NSW, a separate trade with its own qualification, and it is not one we work in at any value. Rusted-through gutter bottoms, a downpipe that has come away, a leaking join: we will photograph it, show you and point you at a roof plumber. The licensing rules go through how NSW splits roof tiling from roof plumbing and where the $5,000 threshold sits for both.
Tiled roofs are a different matter, and if clearing turns up cracked ridge capping or a slipped tile while we are up there, that is work we can do. The roof warning signs post covers what those look like, and the roof repairs page covers the rest.
If you cannot remember the last time yours was done, it is due. Give us a call and we will have a look while we are in your street.
Want a hand with this at your place? Get a free quote or call 0450 959 936.