Sutherland Shire · AS 3660.1
Perimeter termite barriers installed to AS 3660.1 for Menai rebuilds and extensions on 1980s brick blocks, backing onto the bushland that has brought bushfires to the suburb twice.
Quick answer
Yes, a rebuild or extension in Menai needs a termite management system, since the suburb sits in a termite-prone part of the Sutherland Shire and surrounding bushland pushes that risk higher than an average shire street. 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 Menai
Menai is a suburb in postcode 2234, about 24 km south-west of the Sydney CBD, within the Sutherland Shire, and has only been developed since the early 1980s, so most homes are modern, often four-bedroom brick houses with double garages, and a high proportion are owner-occupied. Menai Road is the commercial spine, with Menai Marketplace, Menai Metro and Menai Central offering supermarkets, dining and bulky goods, and there is no railway station in Menai itself. Homes built in the 1980s are now old enough that decks, pergolas and extensions are common, so our work here is mostly a rebuild, extension or secondary dwelling on an established block.
Menai was affected by bushfires in 1994 and again in 2017 and 2018, a clear sign of how much bushland surrounds the suburb, and that same bushland is what drives termite pressure here. Subterranean termites forage from surrounding reserves through leaf litter and fallen timber toward the nearest slab, and 1980s-era timber decks and pergolas being extended or rebuilt today often already carry activity that has gone unnoticed for years. Because homes here are old enough for a second or third generation of additions, we check the existing termite management system as carefully as we design the new one.
Reviewed by Ismail, founder · Sutherland Shire coverage · Updated September 2026 · More Sutherland Shire suburbs
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Local conditions
Three conditions shape termite risk in Menai, and bushfire history is a reasonable proxy for how much bush surrounds a block.
Menai's 1994, 2017 and 2018 bushfires are a sign of how much bushland surrounds the suburb, and that same bush holds established termite colonies close to many blocks. Homes near the reserve boundary usually need a full perimeter.
Homes built in Menai's 1980s boom are now old enough for a second or third round of decks, pergolas and extensions, and that timber can already carry termite activity that has gone unnoticed for years. We check it during every quote.
Double garages and brick veneer construction are standard in Menai, but roof framing, decking and pergola posts are still timber, and termites will attack them once they find a way in regardless of the brick around them.
What we install here
We work on Menai rebuilds, extensions and secondary dwellings on established 1980s blocks, and the occasional new home on a remaining vacant lot. We install under-slab membrane, collars and a physical or chemical perimeter, with particular attention to any existing deck, pergola or extension being tied into the new work. One fixed quote from your plans covers every stage, scheduled around your builder's pour date. Every job gets a clear written scope before any work starts.
Local knowledge
Our Menai work sits close to Menai Conservation Park and Buckle Reserve, where bushland runs directly against several residential blocks, and near Menai Marketplace and The Ridge Golf Course, where irrigated ground and commercial food waste add their own conditions. Given Menai's bushfire history, we check the specific distance from any nearby reserve on every quote rather than assuming a standard suburban risk level.
Menai is certified through the Sutherland Shire, which requires the standard termite documentation before it will issue the Occupation Certificate: a durable notice goes up inside the meter box, and an installation certificate sets out the installer's licence, the zones covered and the products applied. We supply both, along with maintenance advice suited to a bushland-adjacent property. This is part of our standard local process.
Menai at a glance
| Suburb | Menai, NSW 2234 |
|---|---|
| District | Sutherland Shire |
| Distance from Sydney CBD | 24.4 km south-west |
| Certifying council | Across Sutherland Shire |
| 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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Menai questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215It is a fair indicator. The same bushland that has burned in Menai twice since 1994 also holds established termite colonies, so blocks near a reserve boundary generally get a full physical perimeter rather than a minimal strip, especially where the extension backs onto bush. Feel free to ask us anything else not covered here.
Yes. Decking, pergolas and other timber additions from the original build are old enough now to carry undetected termite activity, so we inspect them closely as part of the quote. The new work still gets the standard collars and perimeter to AS 3660.1. We are glad to answer further questions once we are on site.
After the plumber has set out the drainage and before the concrete is poured, the same timing as any new slab. On a bushland-adjacent block we also like to see the retaining and landscaping plans early, since boundary detailing needs more care. This keeps everything properly documented for future reference too.
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 Sutherland Shire.
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.
