A leak that shows up in the middle of a Sydney downpour can quickly turn a quiet evening into a scramble for towels and buckets. It’s stressful, and the instinct to do something straight away is strong. If you’re wondering what to do when roof leaks, your job during the storm is to limit the damage safely and gather information, not to fix the roof. The fix comes later, in daylight, from someone who can work at height safely.
This guide covers what to do over the next hour: what to do inside your home, what not to do, and how to make the eventual repair easier.
First, stay off the roof
It’s worth saying plainly, because it’s the most dangerous mistake people make. A roof leaking during storm conditions can be extraordinarily dangerous. A wet roof is slippery, tiles can crack and give way under body weight, and wind makes ladders dangerous. No leak is worth a fall from a roof. Everything useful you can do right now, you can do from inside the house. Leave the roof itself to a professional once conditions are safe.
Step 1: Protect what’s below the leak
Move furniture, electronics, rugs, and anything valuable out from under the drip. Water and power don’t mix, so if the leak is anywhere near a light fitting, ceiling fan, or power point, treat it as a live hazard, keep clear, and switch off the power to that area at the switchboard if you can do so safely and dry-handed.
Put down a bucket or large container to catch drips, with an old towel inside to muffle the maddening splashing and reduce splashback. If water is spreading across the floor, towels and a mop keep it from reaching skirting boards and adjacent rooms.
Step 2: Relieve a bulging ceiling
If the ceiling starts to sag or bulge, there’s likely water sitting above the plasterboard. The more water that collects, the heavier it gets, and the ceiling can eventually give way, bringing down a large section. That’s obviously more serious than dealing with a small drip. If you can safely reach the bulge, place a bucket underneath and make a small hole at its lowest point with a screwdriver. This allows the water to drain out before it builds up further.
Step 3: Document everything
While the leak is active, take photos and short videos of where the water is coming in, how fast it’s coming in, which rooms are affected, and any damage to ceilings, walls or belongings. Make a note of when it started and what the weather was like at the time. This can help in a couple of ways: it gives the roofer a better idea of where to look, and if you need to make an insurance claim for storm damage, you’ll have photos showing what happened. We cover the claim process in our guide to storm damage insurance claims in NSW
Step 4: Contain, don’t seal
Resist the urge to climb up and slap sealant or a tarp on the roof while the storm is still going. Apart from the safety risk, a quick patch on a wet roof probably won’t hold and can make it harder to find the actual problem later. If you’re looking for ways to stop a roof leak temporarily, focus on containing the water inside, using buckets and towels and moving anything that could be damaged. If the roof needs temporary protection, such as professional tarping, a roofer can take care of it once the weather has eased. We cover this separately in our note on emergency make-safe measures
What to do once the rain stops
When the storm passes, a few things help:
- Keep the buckets and towels in place; leaks often continue dripping for a while as trapped water works its way through the roof cavity.
- Open windows or run a fan in the affected room to start drying it out and discourage mould, which can take hold within a day or two in damp plaster and insulation.
- Photograph the dried-out damage as well, so you have a full before-and-after record.
- Book a professional inspection promptly. The leak has shown you there’s a fault; finding and fixing the actual source is the only thing that stops it recurring next storm.
Why the leak appeared now (and will again)
Leaks that only show up in heavy rain almost always indicate a weak point that lighter rain doesn’t expose. Driving, wind-blown rain forces water sideways under tiles, over blocked gutters and through gaps that stay dry the rest of the year. The storm didn’t create the fault; it found it. That’s why sealing over the damp patch or waiting for dry weather doesn’t work: the underlying problem remains, ready for the next downpour. Understanding the common causes of roof leaks helps make sense of what the roofer eventually finds.
When a leak is genuinely urgent
Most leaks can wait until the storm passes before they need to be checked. An emergency roof leak is more likely when water is coming in near electrical fittings and you can’t safely isolate the power, if the ceiling has collapsed or looks like it might, or if there’s more water coming in than you can deal with using buckets. In these situations, keep everyone away from the area and get a professional out as soon as it’s safe to do so.
Getting it fixed properly
Once you’re past the immediate scramble, the priority is a proper repair rather than a patch. A thorough inspection traces the leak back to its true source, which is often well away from where the water appeared inside, and fixes the cause so it doesn’t return. Our team handles exactly this kind of roof leak repair, and if the storm has revealed that your roof is generally past its best, it may be worth discussing whether a full roof restoration is the more sensible long-term move.
Need Your Roof Checked After the Storm?
Don’t leave a roof leak to cause more damage. Once the weather has cleared and it’s safe to inspect, our team can assess the roof, identify where the water is entering, and recommend the appropriate repair.
Get a Free, No-Obligation Quote or call 0404 397 198 to arrange an inspection with Aabacus Roofing.
FAQs
Should I go up on the roof to stop the leak during a storm?
No. A wet, windy roof is dangerous, and stepping on tiles can cause new leaks or a serious fall. Stay inside, contain the water and leave the roof to a professional once it’s safe.
Is a leaking ceiling an emergency?
It becomes urgent if water is getting near electrical fittings, the ceiling is sagging or has already collapsed, or there’s more water than you can safely manage. A slow drip into a bucket usually isn’t an emergency, but it’s still worth getting the roof checked afterwards.
Why does my ceiling bulge when the roof leaks?
Water can build up above the plasterboard faster than it can drain away. A bulging ceiling can suddenly give way, so if it’s safe to reach, draining the water into a bucket is better than waiting for it to collapse.
Will my insurance cover a storm leak?
It depends on your insurance policy and what caused the leak. Storm damage is often covered, but damage from an old roof, wear and tear, or poor maintenance may not be. Take a few photos of the damage and check your policy before you lodge a claim.