How to make your Officer home’s termite protection last twice as long: the maintenance schedule
Two habits double the working life of a termite barrier here: keep the slab edge visible all the way around the house, and keep water away from it. Do both and a Termidor barrier reaches its full 8 years, a physical barrier lasts the life of the building, and the annual $350 to $550 inspection stays a formality. Ignore them and the barrier is bridged inside three years by a garden bed nobody thought about, at a cost of $2,000 to $8,000 in treatment and $8,000 to $60,000 in repairs that no home policy will pay. The schedule below is what we do on our own houses.
What is actually working against you in Cardinia Shire
This is not generic advice about a generic house. The Cardinia growth corridor has a specific set of enemies and they turn up in almost every report we write.
The bushland edge. The shire wraps around Bunyip State Park, the Cardinia Reservoir catchment and the foothills of the Dandenongs. Coptotermes acinaciformis, the most destructive subterranean termite in Victoria, nests in eucalypt stumps and dead trees out there and forages 50 to 100 metres into surrounding properties. Southern Officer, Heritage Springs and the rural-residential blocks at Pakenham Upper and Nar Nar Goon are inside that radius. The pressure is not seasonal and it does not go away.
The clay. Most of the flat country through Officer, Cardinia Lakes and Pakenham is reactive clay. It holds water for weeks after a wet winter, which is exactly the humidity a Coptotermes nest needs, then it shrinks in a dry February and opens hairline cracks in the slab edge, the perimeter paths and the mortar joints. Those cracks are the doorway. Clay movement is also why doors and windows in Cardinia houses jam in one season and free up in another, which is worth knowing before you assume the worst.
Landscaping done after handover. Every home built here since about 2010 has a termite management system installed to AS 3660.1, and every one of those systems assumes the slab edge stays visible. Then the owner puts in raised garden beds, a mulched strip along the north wall, a concrete path poured hard against the brickwork, a deck, or render carried down past the edge. The single most common defect we record in the newer estates is a buried slab edge, and the second is soil or mulch covering the weepholes.
Gum litter and gutters. Eucalypt leaves, bark and capsules fill a gutter faster than almost anything else. A gutter that overflows at the eaves soaks the wall base and the ground right where the barrier is meant to be doing its work. Twice a year is the right frequency here, not once.
Timber in ground contact. Sleeper retaining walls, raised veggie boxes, fence posts, pergola posts and firewood stacks are feeding stations, and untreated pine is the worst of them. Replacing a low timber sleeper wall with concrete sleepers is commonly $300 to $550 per square metre of wall face, and it is money well spent when the wall is within a few metres of the house.
Service life: what you should actually expect
- Termidor or similar liquid soil barrier: around 8 years, warranted on the condition that annual inspections happen and the treated soil is not disturbed. Sandy or high-organic soil and constant wetting shorten it.
- Physical barrier under the slab (mesh or sheet products): designed for the life of the building, because there is nothing to break down. The failure mode is not the product, it is a buried or bridged slab edge.
- Chemical reticulation system built into a new slab: a recharge flush somewhere between 5 and 10 years depending on the product, typically $1,200 to $2,500. If you bought a 2016 build, this is due now.
- In-ground baiting stations: the station bodies last many years; the bait is replaced as it is consumed. Annual monitoring is $350 to $650.
- Treated pine decking and structures above ground: 10 to 15 years with maintenance. Hardwood 15 to 25.
- Untreated pine sleepers in ground contact: assume 5 to 8 years, and assume termites find them before rot does.
What voids a warranty
Warranties on termite work are not generous documents, and they are not meant to be: the whole thing rests on the barrier staying continuous and the house staying inspectable. These are the things that cancel cover, in the order we see them.
- A missed annual inspection. Almost every warranty makes it a condition, and it is the most common reason a claim fails.
- Disturbing treated soil: laying pavers or a concrete path over the treated trench, digging a new garden bed against the wall, trenching for irrigation, excavating for a shed slab.
- Burying the slab edge under soil, mulch, render, decking or a poured path.
- Setting a pergola, carport or deck post into the ground inside the treated zone.
- Another operator treating over the top, or a homeowner applying a hardware store product around the perimeter.
- Changing the drainage so the treated zone stays waterlogged, or leaving a leak unrepaired after it has been reported to you.
- Finding activity and not reporting it promptly. Most warranties require notice within a set number of days.
If you are planning landscaping, decking or a shed on a house with an existing barrier, ring us before the excavator arrives, not after. Re-treating a disturbed section is usually a few hundred dollars. Re-treating a whole perimeter because nobody mentioned it is $2,800 to $5,000.
Book the annual inspection and stop guessing
$350 to $550 single-storey, $500 to $800 double-storey. Thermal, moisture meter and borescope, written AS 3660.2 report inside 24 hours, and we diarise the next one.
The maintenance checklist, by frequency
Ticks are saved in your browser so you can work through it over a weekend. Items marked as a pro job need a licensed Victorian pest technician: applying termiticide, opening workings, servicing bait stations and issuing a compliant report are not homeowner tasks.
After every heavy storm or downpour: do it yourself
Every season, four times a year: do it yourself
Twice a year: do it yourself, or $150 to $350 for a pro
Every 12 months: get a pro
Every few years: get a pro
Stop and call 0485 813 822 straight away if
The cost of neglect, in numbers
A colony that goes unnoticed for 18 to 36 months, which is the usual gap between arrival and the first visible sign, costs $2,000 to $8,000 in treatment and $8,000 to $60,000 in structural repair, and Australian home building policies exclude all of it. There is no version of this where insurance rescues you, which we cover in detail on the insurance page. Ten years of annual inspections is $3,500 to $5,500 in total, less than the smallest structural repair we ever write a scope for, and that spend also keeps whatever warranty you hold alive.
The cheap end of the schedule matters more than the expensive end. Clearing the weepholes, cutting the garden back off the slab edge, fixing a dripping tap and getting the firewood off the wall costs somewhere between nothing and $600, and it removes the great majority of what we flag as conducive conditions in Officer. The expensive end, the barriers and the baiting systems, is what you buy when the cheap end has already been done and the pressure is still there. Doing it the other way round is how people spend $5,000 on a barrier and get bridged by a garden bed two summers later.
Not sure which protection your house has? Start with the barrier recharge page if it is a newer build, Termidor versus Sentricon if you are choosing between systems, and the signs page if you want to know what you are looking for on your quarterly walk around. If you find something today, read the first hour page before you touch it. Owners of investment properties should also read who pays in a rental, because in a tenanted house nobody is doing the quarterly walk unless you arrange it.
Put your place on an annual schedule and we will remind you
We quote on the call, book within the same week for most jobs, and send a reminder four weeks before the next inspection is due.
Maintenance questions we get asked
How long should a termite barrier last in Officer?
How often should a Cardinia Shire home be inspected?
What voids a termite treatment warranty fastest?
Why does the slab edge matter so much in the newer estates?
What does neglect actually cost?
How much of this can I do myself?
Honest note: if your house is under 5 years old, has a certified management system and a clean report, the only thing on this page you need to buy is the annual inspection. Everything else is a walk around the house with a rake. Local pages: Officer, Cardinia Lakes, Heritage Springs and Cardinia Shire. Prices are on the pricing page.