Storm Season Prep for Adelaide Homes

Adelaide's winter storms aren't like the summer thunderstorms people think of in Queensland or New South Wales. They're driven by cold Antarctic fronts that sweep up through the Southern Ocean and hit the Adelaide Plains and Hills with sustained wind and rain — sometimes for days at a stretch. The Bureau of Meteorology tracks these as Southern Ocean troughs, and when the seasonal outlook leans toward a wetter-than-average winter, gutters that are even half-blocked become a real liability.

Spring fronts (September through November) tend to bring less rain but higher peak wind speeds. It's a combination that rips leaves off eucalyptus trees and sends bark strips straight into your gutters — right after winter has already packed them with debris. Many homeowners focus only on the winter clean and skip the spring one, then wonder why their gutters overflow during a September storm.

If you're in the Adelaide Hills — suburbs like Stirling, Aldgate, Crafers or Bridgewater — you're also dealing with denser tree canopy, more leaf fall, and the added complexity of BAL bushfire zone compliance that runs from November through April. Getting your gutters sorted in September sits right at the intersection of storm prep and fire prep.

The core job before winter hits is making sure water can get in, move along, and get out. That means clearing the gutter channel, flushing the downpipes, and confirming nothing's restricting flow at the outlet.

Clearing the Gutter Channel

In Adelaide, eucalyptus is the main culprit. Unlike deciduous trees that drop leaves once a year, eucalyptus sheds leaves, bark and seed pods year-round. By April, gutters that haven't been cleaned since late summer can have a genuine layer of compacted debris sitting in them. A light rinse won't shift that — it needs to be physically scooped out before you flush.

1. Scoop out compacted leaf and bark debris by hand (with gloves) or with a gutter scoop tool. Work away from the downpipe outlet.
2. Bag the debris as you go — wet eucalyptus leaf mulch is slippery and heavy, and dropping it onto the lawn creates a slip hazard and kills grass.
3. Once the channel is clear, run water from a hose along the gutter length toward the downpipe outlet and watch for low spots where water pools. These indicate sagging — a separate problem but worth noting.
4. Check that gutter brackets are still holding the correct fall (roughly 1:500 toward the downpipe). If sections are visibly sagging, water will sit there no matter how clean the rest is.

Flushing Downpipes

Blocked downpipes are more common than most people realise. Debris settles at every elbow joint in the system. Run a hose at full pressure down the pipe from the top — you should hear the water running freely at the base. If it backs up, the pipe's blocked.

Downpipe clearing (when it's a genuine blockage rather than surface debris) is typically charged separately — expect $74 to $200 per downpipe depending on the severity and access. If a downpipe runs internally through a wall or under a slab, specialist jetting equipment may be needed.

Gutters and the roof are the main event, but a winter storm checklist for an Adelaide home goes a bit further than that.

Secure or Stow Outdoor Items

Eighty-kilometre-per-hour gusts are routine during Adelaide's Antarctic fronts. Anything that can become a projectile — trampolines, umbrellas, lightweight furniture, potted plants near fences, corrugated iron offcuts — needs to be either secured or stowed before a forecast front arrives.

• Fold and anchor or store patio umbrellas — they act as sails in wind.
• Anchor trampolines with a purpose-made kit or move them against the fence. They're one of the most common sources of neighbour fence damage in Adelaide storms.
• Stack outdoor furniture or move it under a pergola. Lightweight aluminium chairs are notorious for ending up in the pool or against a glass door.
• Check that bin lids are latched — council bins rolling down a street in wind is a hazard and an inconvenience.
• If you're in the Hills and have a rainwater tank with a mesh cover, check the mesh is intact and secured. Debris in the tank creates its own problems.

Check Drainage Around the House

While you're outside, walk around the perimeter and look at where downpipes discharge. They should direct water away from the foundation — either into stormwater pits, agricultural drains, or at least a splash plate that directs flow away from the house. If a downpipe is just dumping water against the wall, that's the source of a future moisture problem.

When a front's already hitting, the work is mostly done — or it isn't and you deal with the consequences. But there are a few things worth knowing for during and immediately after a storm.

During the Storm

• Don't go on the roof during or immediately after a storm. Wet tiles are treacherous, and wind gusts are unpredictable. Whatever's happening up there can wait.
• If you see water coming in at the ceiling or wall, put down towels and buckets and take photos for insurance. Don't try to trace the source yourself from the roof in rain.
• Check that downpipe discharge points aren't causing pooling against the foundation. If water is visibly building up against the house, it's worth diverting temporarily with sandbags if you have them.

After the Storm

Once it's safe to be outside, do a quick visual walk-around before getting on any ladder:

1. Look along the ridgeline and gutterline from the ground for anything obviously shifted or dislodged.
2. Check downpipes at ground level — if debris is spilling out, the system backed up during the storm.
3. Check the roof and garden for fallen branches, particularly eucalyptus which drops limbs without warning. Confirm none have landed on the roof.
4. If gutters are visibly overflowing with storm debris, that's a post-storm clean job. Running water through a packed gutter won't clear it — the debris needs to come out first.