Blacktown & Mount Druitt · AS 3660.1
Under-slab membrane and perimeter barriers installed to AS 3660.1 for Marayong knockdown rebuilds and secondary dwellings, on the flat Blacktown plains either side of the rail line.
Quick answer
Yes, a rebuild or new home in Marayong needs a termite management system, since the suburb sits in a termite-prone part of the City of Blacktown regardless of how established the street is. The system is installed to AS 3660.1, with collars and under-slab work completed before the pour, and the durable notice plus installation certificate supplied to your certifier before the Occupation Certificate.
Termite barriers in Marayong
Marayong is an urban residential suburb in postcode 2148, about 32 km north-west of the Sydney CBD, in the City of Blacktown, with a name that comes from the Dharug word Mariyung, meaning emu. Around 1900 the land was carved into market gardens and poultry farms and stayed mostly rural until the 1960s, when Housing Commission estates were built south of the railway line and an industrial area was released to the north. Most of our work here is a knockdown rebuild on one of those sixty-year-old blocks, or occasionally a secondary dwelling in an established backyard.
Homes that have stood for sixty years bring their own conditions for a termite barrier. Decades of garden growth on a rebuild block can hide buried timber from the original construction, and worn seals or old sub-floor vents on a neighbouring house can be evidence of activity that has been quietly established for years. Marayong is flat and open, without significant bushland or waterway edges, so the pressure here comes less from natural terrain and more from the age and condition of the surrounding housing stock, which we assess as part of every quote.
Reviewed by Ismail, founder · Blacktown & Mount Druitt coverage · Updated September 2026 · More Blacktown & Mount Druitt suburbs
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Local conditions
Three conditions matter more than terrain when we plan a Marayong rebuild's barrier.
Marayong's Housing Commission-era homes sit on gardens that have had six decades to grow, and a rebuild on one of these blocks often uncovers buried timber and old fence lines that can already be feeding termite activity.
Older homes throughout Marayong can have worn seals, ageing sub-floor vents and timber that has carried undetected termite activity for years. We treat that context as relevant to a rebuild next door, not just to the block itself.
Marayong's flat terrain suits standard waffle pod and raft slab construction, but a flat block gives termites no natural barrier of their own, so the collars, membrane and perimeter carry more of the protective work here than on a sloping or bush-facing site.
What we install here
We install under-slab membrane, collars and a physical or chemical perimeter for Marayong knockdown rebuilds, granny flats and the occasional new home on a remaining vacant block, sized to your builder's slab design. Because the terrain here is flat and open, we focus quote time on the condition of the existing site and neighbouring structures rather than natural bush or water exposure. One fixed quote from your plans covers every stage.
Local knowledge
Our Marayong work is spread across the established streets south of the rail line and the industrial area to the north, with Marayong station and Marayong Park marking the centre of the suburb's older housing. Rebuild sites near Woodcroft Shopping Village tend to sit on blocks with decades of garden growth, which is where we spend the most time checking for buried timber before recommending a system.
Marayong is certified through the City of Blacktown, which requires the standard termite documentation before it will issue the Occupation Certificate: a durable notice fixed in the meter box recording the system installed, and an installation certificate naming the products used, the areas protected and the installer's licence. We supply both, along with product data, as soon as the barrier work is finished.
Marayong at a glance
| Suburb | Marayong, NSW 2148 |
|---|---|
| District | Blacktown & Mount Druitt |
| Distance from Sydney CBD | 32.1 km north-west |
| Certifying council | Local council |
| Standard applied | AS 3660.1 termite management systems |
| Installed | Before the slab pour, then staged through the build |
| Documents supplied | Installation certificate and durable notice |
| Typical builds covered | New homes, knockdown rebuilds, granny flats, duplexes, townhouses |
Systems we install
Every photo below is from one of our own Sydney jobs. We look at your slab design, site and budget, then recommend a system or a combination.
01A termite-resistant sheet laid over the whole prepared footprint before concreting, so termites can't come up through the slab anywhere.
02A sealed collar on every pipe, conduit and service that passes through the slab. These gaps are the most common hidden way in.
03Protection at the slab edge and into the wall cavity, which stops termites building hidden tunnels up the outside of the slab.
04An APVMA-registered termiticide zone in the soil, with an optional pipe network under paving so it can be recharged later without digging.
05Barriers for bearers, piers and raised timber floors on sloping or elevated blocks, where there's no slab to protect.
06Detailing for sandstone cuts, block retaining walls, step-downs and cut-and-fill sites, which are common across Sydney.
Why during construction
A retrofit can only treat around a finished house. A pre-construction system protects the parts nobody will ever be able to reach again.
A barrier put in during the build costs a fraction of a post-construction system, and far less than repairing termite damage.
New houses (Class 1) and outbuildings (Class 10) with termite-susceptible framing need a compliant termite management system.
Pipe penetrations and slab joints can only be fully protected while they're still open, before the concrete goes in.
An under-slab system covers ground that no treatment from outside the finished house can ever reach.
Your certifier needs the certificate and durable notice before issuing the Occupation Certificate. We supply both together.
Documented, compliant protection gives buyers, building inspectors and lenders confidence when the home is sold.
Installation stages
A termite barrier isn't a single visit. Each part goes in when the site is ready for it, and we fit around your plumber, concreter and bricklayer.
Send your plans and slab details. We recommend a system and give you one fixed price that covers every stage.
Collars go on every service once the plumber has set out, then the membrane or soil treatment is installed across the prepared site.
Perimeter and cavity protection is fitted as the brickwork or cladding goes up, so there's no unprotected gap at the slab edge.
Where it's specified, the chemical perimeter or reticulation system is completed around the building before paths and gardens go in.
A durable notice goes in the meter box, and the installation certificate goes to your builder and certifier.
The owner gets simple care instructions and an inspection schedule so the system keeps doing its job for years.
Compare systems
Both can meet AS 3660.1. The best choice depends on your slab type, what surrounds the house and how much ongoing upkeep the owner wants.
Physical protection
Entry-point protection
Soil protection
Top-up protection
Most of the Sydney builds we work on use a combination: physical collars on every penetration plus a physical or chemical perimeter.
For builders & developers
Builders, developers and owner-builders get a fixed quote from plans, a technician who turns up when the site is ready, and paperwork that never holds up sign-off.
Consistent pricing across lots, one point of contact and a full document set for every dwelling.
Missing durable notices and unclear install records are a common reason Occupation Certificates get held up. We hand everything over together so your certifier has it all in one go.
Paperwork
A complete document set for the builder, the certifier and every future owner of the property.
A permanent notice in the meter box showing the system, install date, installer, any chemical's life expectancy and inspection advice.
For: certifier, owner, future owners
Written confirmation of the system and products used, the areas protected and our licence details.
For: builder, certifier, owner
Details of the physical system or termiticide installed, including safety data sheets for any chemicals.
For: builder, owner
How to keep the system working, plus the recommended inspection frequency under AS 3660.2.
For: homeowner
From real jobs
Photos from our own Sydney sites, not stock images. Tap any photo to see it larger.
Membrane barrier across a large residential slab
Barrier work on a Sydney Harbour site
Installation through sandstone excavation
Perimeter barrier and sleeves on a new slab
Waffle pod formwork with collared penetrations
Membrane detailed against a retaining wall
Membrane sealed around a column
Protected slab edge with collar in place
Collared penetrations before the pour
Perimeter barrier on a completed slab edge
Pipe penetrations sealed into the membrane
Collars fixed through mesh before concreting
Google reviews
Real, verified reviews from homeowners and businesses we've worked with.
Pricing
Every build is different, so we don't guess. We price from your plans and give you one fixed written quote. Quoting is free.
After handover
A barrier only works while it stays intact and visible. Pass these on to the owner.
Free fixed quote
Tell us about your build and get a clear, fixed price, fast. We usually reply within 30 minutes during business hours.
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Marayong questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215It can. Established gardens on older blocks often hide buried timber and old fence lines from the original house, which can already be feeding termite activity. We check the soil during the quote so the barrier is sized to what is actually there, not a clean-slate assumption. We keep a copy of every certificate on file for later.
Not necessarily. Flat terrain has no bushland or waterway to add extra pressure, but it also gives termites no obstacle of their own, so the collars, membrane and perimeter do the main protective work regardless of the terrain around your block. That keeps the whole process simple for you and your builder.
After the plumber has set out the drainage and before the concrete is poured, the same as any new build. Since many Marayong blocks are tight, established sites, let us know your access constraints early so we can plan the visit around your builder's program. It also keeps your certifier's paperwork straightforward and complete.
In most cases, yes. The National Construction Code requires a termite management system for new houses and outbuildings in termite-prone areas where the primary building elements can be damaged by termites. Sydney is termite-prone, so the system is installed to AS 3660.1 and your certifier asks for the installation certificate and durable notice before the Occupation Certificate is issued.
It depends on slab area, perimeter length, the number of pipe penetrations, the system chosen, site complexity and how many visits the build needs. Send us the plans and we return one fixed written quote covering every stage. Quoting is free.
Nearby
Same crew, same staging and the same certifier-ready paperwork, right across the Blacktown & Mount Druitt.
Service areas
From the Eastern Suburbs and Inner West to the Hills, the Shire and the western growth corridors. Every suburb has its own page with the local ground conditions, the council that certifies the work and the questions builders there ask us.
Slab pour coming up?
Send us your plans today for a fixed quote, or call and talk to a licensed technician about your site.
