Why Melbourne storms are hard on roofs
Melbourne's storms come in a few flavours. Summer brings short, violent thunderstorms with heavy rain and occasional hail. Through winter and spring, cold fronts sweep in from the south-west with strong gusts and squally showers. Now and then a deep low parks over Victoria and drops days of rain. Each type stresses a roof differently: hail impacts, wind lifts and rattles, and heavy rain finds every weak joint and blocked gutter.
Older roofs suffer most. A 1970s brick veneer in the eastern suburbs with original concrete tiles and tired ridge pointing, or a weatherboard bungalow with century-old terracotta, has had decades of expansion, contraction and weathering. One storm often exposes problems that were already brewing.
The most common issues after a storm
Cracked, broken or slipped tiles
Hail and falling branches crack tiles. Strong gusts can lift tiles that are only held by their own weight and nibs, letting them slide out of line. A single displaced tile opens a gap straight into the roof space. Concrete tiles that have lost their surface coating become more brittle and porous over time, so they crack more easily.
Loose or missing ridge capping
The ridge and hip caps along the peaks are bedded in mortar and finished with pointing. When bedding cracks or pointing perishes, caps start to rock, and a strong front can dislodge them. Look along the ridgelines for gaps, uneven lines or fragments in the gutters.
Lifted metal sheets and flashings
On Colorbond steel and Zincalume roofs, wind gets under loose sheets, especially at the edges and around penetrations. Screws that have backed out, rusted fixings or perished washers make this worse. Flashings around chimneys, skylights and wall junctions can peel away and start to flap.
Hail dents
Metal roofs may show dents after hail. Light dimpling is often cosmetic, but heavy impacts can damage coating and create spots for corrosion later. Gutters and downpipes usually dent first, which is a handy clue when you are checking from the ground.
Blocked and overflowing gutters
Storms strip leaves and bark from gums and other trees, and much of it lands in gutters. When gutters choke, water backs up under the roof edge, into eaves and sometimes into walls. Box gutters on inner-suburb terraces, which sit inside the roof line, are especially risky because overflow goes straight into the house.
Valley and box gutter failures
Valleys carry concentrated water where two roof planes meet. Rust holes, debris build-up or poorly sealed valley irons often only leak under heavy rain. Victorian and Edwardian terraces in Richmond and nearby suburbs often have box gutters between parapets that rely on outlets staying clear.
Water inside the house
Brown rings on ceilings, drips from light fittings, damp cornices and swollen plaster all mean water has got through. Do not ignore a small stain; ceiling plaster can sag and collapse once saturated.
What each sign usually means
| What you see | Likely cause | How urgent |
|---|---|---|
| Tile fragments in gutters | Cracked or broken tiles, perished pointing | Book an inspection soon |
| Ridge line looks wavy or gappy | Loose ridge caps | Soon, before the next front |
| Flapping metal or loud rattling | Lifted sheet or flashing | Urgent, risk of further lift |
| Ceiling stain or drip | Leak somewhere above | Urgent if growing |
| Sagging, bulging ceiling | Water pooling on plaster | Emergency, keep clear |
| Dented gutters, downpipes | Hail impact | Inspect roof surface too |
How to check your roof safely
Never go on a wet or storm-damaged roof. Instead:
- Walk around the house and scan the roof with binoculars from several angles.
- Look in gutters and around downpipe outlets for tile pieces, coating grit or debris.
- Check the eaves and fascias for sagging or water staining.
- If you can safely reach the manhole, shine a torch into the roof space for wet insulation, light coming through or dripping.
- Inside, check ceilings in every room, particularly near external walls and below valleys.
- Photograph everything with the date visible, including the wider view and close-ups.
If there is a hole, a sagging ceiling, or a tree branch through the roof, keep people out of that area and switch off power to affected circuits if water is near light fittings or switches. For dangerous storm damage, the Victoria State Emergency Service can help with temporary make-safe work on 132 500.
Temporary fixes versus proper repairs
A make-safe repair, such as a tarp, a replaced tile or a re-fixed sheet, buys time. It is not the end of the matter. After the dust settles, it is worth getting a full inspection to see whether the storm exposed one problem or a roof that is near the end of its life.
Our storm-damaged roof replacement guide walks through the insurance and make-safe process. If you are weighing up patching against replacing, see roof replacement versus roof repair.
When storm damage points to a bigger problem
One cracked tile is a repair. Signs that a storm has revealed something more serious include:
- Widespread brittle, crumbling or porous tiles across many roof faces.
- Rust right through metal sheets rather than just at a few fixings.
- Repeated leaks in different spots after every heavy rain.
- Battens or rafters that are wet, soft or visibly sagging.
- An asbestos cement roof that has been cracked by hail, which needs licensed handling rather than patching.
For tiled roofs that have reached this point, tiled roof replacement is often more economical than chasing leaks year after year. Metal roofs with widespread corrosion may suit a full metal roof replacement.
Reducing damage from the next storm
You cannot stop a storm, but you can make the roof less vulnerable:
- Clean gutters, valleys and box gutter outlets before summer and again in late autumn.
- Trim branches that overhang the roof, using an arborist for large trees.
- Have ridge capping re-bedded and re-pointed when the mortar starts cracking.
- Replace rusted screws and perished washers on metal roofs.
- Make sure downpipes are connected and draining freely to stormwater.
Keep a simple storm file
It sounds fussy, but a folder on your phone with dated photos, the roofer's written findings and any invoices for make-safe work saves headaches later. Insurers ask for this material, and if a leak reappears months on, the record shows when the damage first occurred and what was done. Note the date and time the storm hit, which rooms were affected, and anything you moved or threw out because it got wet. Hold on to ruined belongings until the assessor gives the all-clear to bin them.
Getting help
If your roof took a hit, the next step is a proper look from someone qualified. Roof Repair Melbourne VIC puts you in touch with independent roofers in your area for a no-cost on-site quote, whether it turns out to be a repair or a new roof. The roofers we refer should have current roof plumbing registration and insurance; ask to sight both before they start. Use our contact page to request a visit.