The call that stuck with me came in at six in the morning from a place in Mount Albert, the day after a southerly had come through with gusts over 100 km/h. A section of corrugated iron had peeled back near the ridge like the lid of a tin, and water was already tracking down through the ceiling into a bedroom. The homeowner had climbed up in the dark with a torch to look at it before ringing anyone. That is close to the worst thing a person can do in the first hour after storm damage, and it is also the most common one, because the urge to see how bad it is always arrives before the thought that a wet iron roof can fail under someone’s weight without warning.
The first hour is about safety, not repair
Nobody should be on a roof in the dark, in the wet, or while wind gusts are still above about 30 km/h, full stop. Storm damage rarely announces itself as a single clean tear; a lifted ridge cap or a cracked sheet is often sitting on fixings that have already pulled halfway out, and a person’s weight is what finishes the job. If there are power lines down nearby, or a service cable running close to the damaged section, that is a job for the electricity network and the fire service before anyone touches anything, including turning off the mains yourself if water is tracking anywhere near the switchboard or downlights. On a clay Auckland section after heavy rain the ground itself can also be unstable near a retaining wall or a bank, so the safest move is usually to assess the roof from the ground with binoculars, or from an upstairs window, and leave the climbing to someone with the right harness and roof anchors.
Photograph everything before you touch anything
Insurers want to see the damage as the storm left it, not as it looked after someone had already started clearing debris or nailing down a temporary cover. Wide shots of the whole roof plane, close shots of each torn or lifted sheet, and photos of anything that fell onto the roof, such as a branch from next door, all matter more than most homeowners expect. If a tree came down and it is a protected specimen under the local plan, get photos of that too before any of it is cut up and moved, because removing a protected tree without council consent can turn a storm claim into a separate compliance headache. Keep receipts for anything bought for temporary protection as well; most policies cover reasonable costs to prevent further damage, but only with evidence of what was spent.
Temporary waterproofing that helps, and the kind that makes it worse
A tarp, weighted down properly and run over the ridge rather than stopped short of it, buys time without doing more harm. The mistake I see most often is someone screwing battens straight through a tarp and into good iron to hold it down, which punches a fresh set of holes into a roof that may only have one damaged sheet. Sandbags, or straps run right over the roof and anchored at both eaves, hold a tarp down without adding a single new penetration. Ply nailed over a hole is sometimes necessary for a large tear, but it should sit on top of the existing roofing, and any fixings need to land in rafters or purlins rather than in the iron alone, or the next gust takes the ply with it. Roofing tape over a small puncture is a reasonable stop-gap for 48 hours, not a repair, and painting over it before an assessor sees it costs a claim rather than saves one.
What the first 48 hours are actually buying you
The point of triage is to stop water getting further into the ceiling and framing without hiding the original damage or creating new damage that gets blamed on the storm. Once the roof is stable and dry enough to sit for a few days, the real decision is whether it is a patch or a re-cover, and that is a judgement call best made by whoever is going to be up there doing the permanent fix. For roofs in the wider Auckland area after weather like this, that is usually the point at which it is worth getting Auckland roof repairs booked in to assess the framing underneath, since a torn sheet often hides fixings and battens that took more strain than they show from below.
Frequently asked questions
Is it safe to walk on a roof after a storm to check the damage? Not until wind gusts have dropped well below 30 km/h and the surface has had a chance to dry; wet iron over storm-loosened fixings can give way without warning.
What should I photograph for an insurance claim after roof storm damage? Wide shots of the whole roof, close-ups of each damaged sheet or flashing, anything that fell onto the roof, and receipts for any temporary materials bought to stop further water getting in.
Is a tarp enough to protect a damaged roof for a few days? A tarp weighted or strapped down over the ridge works as a short-term measure, but screwing it directly into good iron creates new penetrations that need their own repair later.