Gas leak at a Cranbourne outdoor kitchen: the first hour, step by step
Turn the gas off at the isolation cock behind the BBQ. A quarter turn, so the lever sits across the pipe rather than along it. If you cannot find it, shut the main tap at the gas meter on the side of the house. Do not flick a light switch, do not run the rangehood, do not start a car in the garage, do not stand in the smell using a phone. Roll the café blinds up, slide the doors open and let the alfresco clear for 20 minutes. If there is an LPG cylinder, carry it out into open air well away from the house. If the smell is strong, will not clear, or you can hear hissing, get everyone outside, ring 000 if there is any fire risk, and ring the gas faults and emergencies number printed on your gas bill.
What the symptom means, how urgent it is, what it costs to put right
This is the table we work off when someone rings from Cranbourne East or Narre Warren South with a problem in the alfresco. Find your symptom, read the urgency column, then read the honest cost. Prices are 2026 rates for the City of Casey and assume normal side access.
| Symptom | What it usually means | How urgent | Typical cost to put right |
|---|---|---|---|
| Rotten-egg smell near the BBQ, appliance off | Leaking flare joint, a failed isolation cock, or a perished appliance flex | Now | $250 to $650 to re-make the joint or swap the cock, plus $180 to $350 for the pressure test and compliance certificate |
| Gas smell only while the BBQ is running | Burner or injector fault, or a regulator well past its service life | This week | $180 to $320 service, $350 to $900 for a full burner set |
| Yellow lazy flames, soot on the grill and hood | Blocked venturi, usually a spider web, or the wrong gas type for the injectors | This week | $180 to $320 clean and service |
| Flare-up that will not settle down | Grease loaded up in the firebox and the drip tray | Now to make safe | Nothing if you clean it yourself, $180 to $320 for a deep service |
| Roof sheet lifted or flapping after a hot northerly | Fixings pulled through, or the roof was never tied down for wind uplift | Now | $600 to $1,500 make-safe, $3,500 to $6,500 to re-sheet a 30 sqm alfresco |
| Water running down the back wall into the cabinets | Blocked box gutter, or a wall flashing that has let go | This week | $180 to $400 to clear and reseal, $600 to $1,400 per cabinet module if the carcass has swollen |
| Safety switch trips the moment the outdoor circuit goes on | Water inside a weatherproof power point, a failed seal on a light, or a wet bar fridge | Now, leave it off | $180 to $320 power point, $280 to $550 new safety switch, $850 to $1,800 new sub-circuit |
| Smoke pushing back into the alfresco from the pizza oven | Creosote build-up in the flue, or a flue that never had the clearance it needed | Now, let the fire die out | $180 to $350 sweep, $900 to $2,500 to correct flue height and clearances |
| Hairline crack across the concrete benchtop | Cabinet or slab movement in reactive clay, or a thin unreinforced pre-fab top | Can wait | $350 to $700 to fill and reseal, $700 to $1,100 per lineal metre to replace properly |
| Alfresco post visibly moving in the wind | Footing lifted in shrink-swell clay, or a rusted-out post base at the slab | This week | $900 to $2,400 per post to expose, re-foot and re-fix |
Indicative 2026 City of Casey rates. A live gas leak or a live electrical fault is never a wait-and-see item.
What makes it worse in the first hour
Almost every job we are called out to rectify got more expensive between the moment the owner noticed and the moment someone competent arrived. Four things do most of the damage.
- Hunting for a gas leak with a flame. People still do it. Use dish soap and water in a spray bottle on the joints with the appliance off and the line still charged, watch for bubbles, and leave the rest to the gasfitter.
- Switching the appliance back on to see if it is fixed. Every re-light pushes more gas into a semi-enclosed room. Under a roof with the blinds down, a built-in BBQ sits in a space with far less air change than an open yard, which is exactly why AS/NZS 5601 treats a roofed outdoor room differently to a patio with open sky above it.
- Tarping a lifted roof sheet from a ladder while the wind is still up. A 2.4 metre Colorbond sheet is a sail. If the change has not passed through yet, move the outdoor setting away from underneath it, keep everyone indoors and wait.
- Mopping up water and carrying on. If water is tracking into cabinetry the cost curve is brutal. A $250 gutter clean this week becomes a $6,500 to $16,000 re-cabinet in two summers, because chipboard and MDF carcasses swell from the inside out and you see nothing until the doors stop closing.
If the trouble started with a storm rather than an appliance, stop and read what home insurance will and will not pay for on a storm-damaged alfresco before you let anyone clean up. Photographs taken in the first hour are worth more than anything you can tell an assessor a fortnight later.
What you can safely do yourself, and what is genuinely dangerous
Safe for a homeowner
- Turn gas off at the appliance isolation cock or at the meter.
- Disconnect a portable LPG cylinder and carry it out into the open.
- Switch the outdoor circuit off at the switchboard and leave it off.
- Unplug appliances from weatherproof outlets once the circuit is dead.
- Lift out cold grills and flame tamers and degrease them in the laundry sink.
- Clear leaf litter from a box gutter you can reach safely from a stable ladder.
- Photograph and measure everything before a single thing is moved.
- Bail water away from the base of cabinetry and get air moving through it.
Not safe, and in Victoria not legal
- Any gasfitting at all: joints, cocks, regulators, extensions, reconnections.
- Changing an injector or converting an appliance between natural gas and LPG.
- Opening a weatherproof outlet, a light fitting or the switchboard.
- Running an extension lead out to an outdoor kitchen as a fix.
- Working on a roof sheet, a flue or a gutter above head height in wind.
- Relighting a wood-fired oven that is pushing smoke back into the room.
- Cutting or unbolting a post or a beam that is holding a roof up.
- Feeding a fixed built-in BBQ from a portable LPG bottle under a roofed alfresco.
The legal line matters more than people expect. Gasfitting and prescribed electrical work in Victoria are licensed trades regulated by Energy Safe Victoria, gas installations must comply with AS/NZS 5601.1, and electrical work must comply with AS/NZS 3000 and be covered by a certificate of electrical safety. Those certificates are exactly what an insurer asks for after a fire. A neighbour who is handy is not a substitute, and the few hundred dollars saved is never worth it.
Gas is off and the area is safe. Now get the cause fixed properly.
Tell us what happened and we will say straight out whether it is a service, a repair or a rebuild.
After hours tonight, or Monday morning: the real numbers
Here is the honest arithmetic, using 2026 rates around Cranbourne, Berwick and Narre Warren.
| Call type | Call-out fee | Labour | Typical total, simple fault |
|---|---|---|---|
| Weekday, business hours | $120 to $180 | $130 to $190 per hour | $250 to $420 |
| Weekday evening, after 6pm | $180 to $280 | $180 to $230 per hour, one hour minimum | $400 to $650 |
| Weekend or public holiday | $220 to $350 | $200 to $260 per hour, two hour minimum | $650 to $950 |
| Roof make-safe with an elevated work platform | Included | Half day crew plus plant hire | $1,200 to $2,500 |
So the after-hours premium on a straightforward fault is roughly $250 to $500. That is real money. For a smell that clears with the gas off, or a safety switch that holds once the bar fridge is unplugged, waiting until the morning is the right call and we will tell you so on the phone. For a leak you cannot isolate, a roof sheet working its way toward the neighbour’s fence, or smoke coming back into a room with people in it, pay the premium and stop reading.
When it is not an emergency, and waiting saves you real money
We would rather talk you out of a booking than take an after-hours fee for something that will keep until Tuesday. These are the calls where waiting is genuinely the better decision.
- A smell that clears and stays gone with the gas off. That is a fault to book, not a hazard to chase at 11pm.
- A hairline crack in a concrete benchtop. Ugly, not urgent. It will not get dramatically worse before the weekend, and a rushed patch always looks worse than a considered one.
- Rust bloom, tea staining or pitting on stainless. That is a maintenance job. Our outdoor kitchen maintenance schedule sets out what to do and what it costs, and none of it is after-hours work.
- A dripping outdoor tap or mixer. Isolate at the mini stop tap behind the cabinet door and book a plumber inside the week.
- An ignition that will not spark but lights fine with a match. Usually a $40 piezo or a flat battery in the electronic ignition module.
- A ceiling fan that has stopped. Unpleasant in February, not dangerous. Switch it off at the wall and book it in.
We also do not do everything, and it is fairer to say so here than at the door. We are not a 24-hour gas or electrical emergency service, we do not chase leaks in the mains between the meter and the street, and we do not do 2am insurance make-safes. What we do is fix the cause properly on the next working day and get the compliance paperwork issued, so the problem does not come back and does not bite you at claim time or at sale time.
What to have ready when you ring (03) 9003 0108
Five things turn a vague phone call into an accurate answer, and about half the time they save you the visit altogether.
- Whether the gas is currently off, and where you turned it off: appliance cock, meter, or LPG cylinder.
- The appliance brand and model, off the plate under the hood or behind the control panel.
- Whether the alfresco is fully roofed, partly roofed or open sky, and whether the blinds were down.
- A photo of the joint, the wet patch, the lifted sheet or the tripped breaker. Photos beat descriptions every single time.
- Your suburb, and whether there is side access wide enough for a trailer.
If the fault turns out to be the design rather than a component, that is a different conversation and a different budget. Have a look at the warning signs that an outdoor kitchen is heading for trouble, the honest numbers on what alfresco and outdoor kitchen work costs in 2026, and how we build outdoor kitchens and roofed alfresco areas in Cranbourne so the same failure does not happen twice.
Get a rectification quote for your outdoor kitchen or alfresco
Send the details now and we come back inside one business day with a written price and the first slot we have.