Pipe penetrations sealed into the termite barrier membrane

Blacktown & Mount Druitt · AS 3660.1

Pre-Construction Termite Barriers Marsden Park

Collars, under-slab membrane and perimeter barriers installed to AS 3660.1 across Marsden Park's new house-and-land estates, between Sydney Business Park and the Yiraaldiya National Park bushland edge.

Postcode2765
DistrictBlacktown & Mount Druitt
From the CBD42.6 km north-west
CouncilSydney CBD Council

Quick answer

Yes, a new home in Marsden Park needs a termite management system before the Occupation Certificate is issued. Marsden Park sits in a termite-prone part of the City of Blacktown, so the NCC requires a compliant system installed to AS 3660.1. Collars and any under-slab work go in before the concrete pour, and the durable notice plus installation certificate go to your certifier afterwards.

Termite barriers in Marsden Park

Why Marsden Park builds need the barrier in before the pour

Marsden Park is in postcode 2765, about 43 km north-west of the Sydney CBD, in the City of Blacktown, named after Samuel Marsden and largely rural until rapid housing development began around 2013. Today new estates sit alongside a caravan park, a golf driving range and a chicken farm, and Sydney Business Park beside the M7 holds large retailers such as IKEA and Costco, while heritage-listed Clydesdale on Richmond Road is a reminder of the suburb's farming past. Our work here is almost entirely new house-and-land construction, staged across estates that are still being built out.

New suburbs bring their own termite story. When paddocks and remaining bushland near Yiraaldiya National Park are cleared for the next stage, termite colonies that were feeding on old fence posts and windrows are displaced toward the first completed homes, so a slab going down beside active earthworks is not starting on clean ground. New homes are generally built with a termite management system, but landscaping, paving and garden beds added after handover can quietly bridge or hide that protection if it was not detailed properly at the start. We check what was installed and make sure it is still doing its job before anything gets covered over.

Reviewed by Ismail, founder · Blacktown & Mount Druitt coverage · Updated September 2026 · More Blacktown & Mount Druitt suburbs

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Perimeter termite barrier on a completed slab edge
Perimeter termite barrier on a completed slab edge — one of our own Blacktown & Mount Druitt installations.

Local conditions

What makes Marsden Park blocks a termite risk

Three things push termite risk on Marsden Park building sites, and each shapes how the barrier is detailed.

Cleared paddocks and remaining bushland

Yiraaldiya National Park and remaining pockets of bushland sit close to several Marsden Park estates, and clearing land for the next stage displaces termite colonies onto the nearest completed slab. We treat freshly cleared ground as active, not as a clean start.

Ongoing construction across the suburb

Marsden Park is still being built out estate by estate, and ongoing earthworks keep disturbing soil and moving pests toward standing homes. Blocks on the edge of active construction or remaining paddocks need the same attention as those near natural bushland.

Landscaping added after handover

New Marsden Park homes are generally built with a termite management system, but paving, garden beds and retaining added once the owner moves in can bridge or hide that protection. We check the installed system and detail the barrier so later landscaping does not undo it.

What we install here

Building in Marsden Park

We install under-slab membrane, penetration collars and physical or chemical perimeter systems on Marsden Park's house-and-land builds, working to the waffle pod and raft slab designs standard across the growth area. Because most sites here are run by a project builder on a tight program, we schedule our visit around the plumber's rough-in and attend again if the slab edge changes. One fixed quote from your plans covers every stage, so a barrier visit never delays your pour.

  • Under-slab membraneA termite-resistant sheet laid across the prepared ground before the pour.
  • Penetration collarsCollars sealed to every pipe and conduit that comes up through the slab.
  • Perimeter & slab edgeA barrier at the slab edge and into the cavity, so nothing can track up hidden.
  • Chemical soil barrierAn APVMA-registered treated zone in the soil under and around the building.
  • ReticulationA pipe network laid before paving so the treated zone can be topped up later.
  • Piers & suspended floorsProtection for bearers, piers and suspended timber floors on sloping blocks.

Local knowledge

Around Marsden Park

Our Marsden Park work runs across the newer estates near Gamarada Park, where mulch and fresh plantings sit close to recently completed homes, and out toward Yiraaldiya National Park, where bushland can push termite activity toward the nearest new build. Closer to Sydney Business Park and the M7, sites are more often commercial or larger residential stages with higher collar counts on a single pour.

Marsden Park builds are certified through the City of Blacktown, which requires a durable notice fixed in the meter box and an installation certificate naming the products used, the areas covered and the installer's licence before it will issue the Occupation Certificate. We supply both, along with product data, so your sign-off is never held up waiting on paperwork from us.

Slab date locked in?Tell us the pour date and we will book the stages around your builder.

Marsden Park at a glance

Termite barrier facts for Marsden Park

SuburbMarsden Park, NSW 2765
DistrictBlacktown & Mount Druitt
Distance from Sydney CBD42.6 km north-west
Certifying councilSydney CBD Council
Standard appliedAS 3660.1 termite management systems
InstalledBefore the slab pour, then staged through the build
Documents suppliedInstallation certificate and durable notice
Typical builds coveredNew homes, knockdown rebuilds, granny flats, duplexes, townhouses

Systems we install

The right barrier for your slab and your site

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.

Physical termite barrier laid over the slab preparation01

Under-slab membrane

A termite-resistant sheet laid over the whole prepared footprint before concreting, so termites can't come up through the slab anywhere.

Penetration collars fixed through mesh before concreting02

Penetration collars

A sealed collar on every pipe, conduit and service that passes through the slab. These gaps are the most common hidden way in.

Completed slab with a perimeter termite barrier in place03

Slab edge & cavity barrier

Protection at the slab edge and into the wall cavity, which stops termites building hidden tunnels up the outside of the slab.

Chemical soil barrier applied along a brick footing04

Chemical soil barrier & reticulation

An APVMA-registered termiticide zone in the soil, with an optional pipe network under paving so it can be recharged later without digging.

Termite barrier beneath a suspended timber floor05

Suspended floors & piers

Barriers for bearers, piers and raised timber floors on sloping or elevated blocks, where there's no slab to protect.

Perimeter barrier run against a sandstone wall06

Retaining walls & tricky sites

Detailing for sandstone cuts, block retaining walls, step-downs and cut-and-fill sites, which are common across Sydney.

Why during construction

Do it now, or pay more to do less later

A retrofit can only treat around a finished house. A pre-construction system protects the parts nobody will ever be able to reach again.

Costs far less

A barrier put in during the build costs a fraction of a post-construction system, and far less than repairing termite damage.

Meets the NCC

New houses (Class 1) and outbuildings (Class 10) with termite-susceptible framing need a compliant termite management system.

Hidden gaps sealed

Pipe penetrations and slab joints can only be fully protected while they're still open, before the concrete goes in.

The whole footprint

An under-slab system covers ground that no treatment from outside the finished house can ever reach.

No OC delays

Your certifier needs the certificate and durable notice before issuing the Occupation Certificate. We supply both together.

Easier to sell

Documented, compliant protection gives buyers, building inspectors and lenders confidence when the home is sold.

Installation stages

Installed in stages that follow your build

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.

Waterfront building site ready for pre-construction termite protection
Step 01Design / DA

Plans & fixed quote

Send your plans and slab details. We recommend a system and give you one fixed price that covers every stage.

Service penetration collars set out through the reinforcement mesh
Step 02Before the pour

Collars & under-slab

Collars go on every service once the plumber has set out, then the membrane or soil treatment is installed across the prepared site.

Perimeter barrier in place as framing begins
Step 03Walls going up

Slab edge & cavity

Perimeter and cavity protection is fitted as the brickwork or cladding goes up, so there's no unprotected gap at the slab edge.

Perimeter barrier on a new build in a Sydney estate
Step 04Before landscaping

Final perimeter

Where it's specified, the chemical perimeter or reticulation system is completed around the building before paths and gardens go in.

Barrier membrane visible along a finished slab edge
Step 05Pre-OC

Notice & certificate

A durable notice goes in the meter box, and the installation certificate goes to your builder and certifier.

Finished slab with a continuous perimeter barrier
Step 06Handover

Owner advice

The owner gets simple care instructions and an inspection schedule so the system keeps doing its job for years.

Compare systems

Physical or chemical termite barrier?

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

Physical membrane, mesh or graded stone

No chemicals
  • How it worksA layer termites can't chew through, laid under the slab or around its edge.
  • Life & upkeepDesigned to last as long as the slab while it isn't disturbed. No top-ups.
  • Good fit forSlab-on-ground homes, and owners who prefer a non-chemical option.
Get this quoted Natural, lasting defence

Entry-point protection

Penetration collars

  • How it worksCollars sealed around each pipe and conduit that passes through the slab.
  • Life & upkeepLong-lasting when fitted properly before concreting.
  • Good fit forEvery slab, usually paired with a perimeter system.
Get this quoted Small detail, big difference

Soil protection

Chemical soil barrier

  • How it worksA treated zone of termiticide in the soil under and around the building.
  • Life & upkeepDepends on the product label and soil conditions. Can be re-applied.
  • Good fit forTighter budgets and some complex sites.
Get this quoted Flexible and provable

Top-up protection

Reticulation system

Rechargeable
  • How it worksPipes laid before paving so termiticide can be pumped back into the soil.
  • Life & upkeepCan be recharged for the life of the building without lifting paths.
  • Good fit forHomes that will be surrounded by paving or landscaping.
Get this quoted Protection you can renew

Most of the Sydney builds we work on use a combination: physical collars on every penetration plus a physical or chemical perimeter.

Our technician installing a pre-construction termite barrier
Our technician installing a perimeter barrier on a live Sydney site.

For builders & developers

Built around your program, not ours

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.

What we need to quote

Architectural or slab planSlab type: raft, waffle pod or suspendedSite addressRough pour dateRetaining wall & step-down details

Fitting in with your trades

  • Collars in before the pour inspection
  • Slab edge & cavity as walls go up
  • Perimeter done before paving

Multi-unit & repeat work

Consistent pricing across lots, one point of contact and a full document set for every dwelling.

No certification delays

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

Everything you get at handover

A complete document set for the builder, the certifier and every future owner of the property.

Durable notice

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

Installation certificate

Written confirmation of the system and products used, the areas protected and our licence details.

For: builder, certifier, owner

Product information

Details of the physical system or termiticide installed, including safety data sheets for any chemicals.

For: builder, owner

Care & inspection advice

How to keep the system working, plus the recommended inspection frequency under AS 3660.2.

For: homeowner

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Pricing

What sets the price of a barrier

Every build is different, so we don't guess. We price from your plans and give you one fixed written quote. Quoting is free.

  • 01
    Slab area & perimeterBigger footprints need more material, more edge protection and more labour.
  • 02
    System typeFull under-slab, perimeter-only, chemical and reticulation options are all priced differently.
  • 03
    Number of penetrationsEach plumbing and electrical service through the slab needs its own collar.
  • 04
    Site complexityRetaining walls, step-downs, sandstone and suspended floors add detailing.
  • 05
    Number of visitsStaged installs follow your program. Multi-dwelling sites can often be combined.
  • 06
    Site accessTight blocks, steep driveways and limited street frontage slow the set-out and add time on site.
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After handover

Keeping the barrier working

A barrier only works while it stays intact and visible. Pass these on to the owner.

  • Keep at least 75 mm of the slab edge exposed. Don't cover it with soil, mulch or paving.
  • No garden beds or stacked timber against the house
  • Keep weep holes clear of render and debris
  • Fix leaking taps, downpipes and hot water units near the walls
  • Ask the installer before drilling through the slab or adding pipes
  • Book a timber pest inspection at least every 12 months
75 mm EXPOSED EDGE BARRIER UNDER THE SLAB
The inspection zone. An exposed strip of slab edge lets anyone spot termite mud tubes before they reach the frame, which is why paving, soil and mulch must stay below it.
Annual timber pest inspection Handed over recently? We inspect the barrier and the building every 12 months.

Free fixed quote

Protect your build
before the pour

Tell us about your build and get a clear, fixed price, fast. We usually reply within 30 minutes during business hours.

  • Send your detailsBuild type, suburb and rough slab pour date.
  • Share your plansSlab plan or architectural drawings, plus any retaining wall details.
  • Get your fixed quoteOne written price covering every installation stage.
Prefer to talk it through?+61 450 515 215 We're here to help 7 days, 7am to 9pm.
  • Fast responseWithin 30 mins
  • Licensed expertsQualified & insured
  • Trusted locallyAcross Sydney

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Marsden Park questions

Answered

Still unsure? Call and talk it through with a licensed technician.

+61 450 515 215
Do all new homes in Marsden Park get a termite barrier as standard?

They should, since the NCC requires a compliant system on any new home in a termite-prone area, which covers all of Marsden Park. It is worth confirming with your builder exactly what was installed and asking for the installation certificate, since that document is what your certifier and any future buyer will want to see.

We're landscaping after moving in, could that affect our termite protection?

It can. Paving, raised garden beds and retaining walls built up against the house can bridge or hide a termite management system if they are not planned around it. Check your installation certificate for the protected zones before landscaping close to the slab edge. We keep a copy of every certificate on file for later.

Does building near remaining bushland in Marsden Park change the barrier?

Yes. Blocks near Yiraaldiya National Park or any remaining cleared bushland sit closer to displaced termite activity than estate stages further from the reserve, so we recommend a full perimeter rather than a minimal strip for those sites. That keeps the whole process simple for you and your builder. It also keeps your certifier's paperwork straightforward and complete.

Does a new home need a termite barrier in NSW?

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.

What does a pre-construction barrier cost?

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

We also install barriers around Marsden Park

Same crew, same staging and the same certifier-ready paperwork, right across the Blacktown & Mount Druitt.

Service areas

Termite barriers across 379 Sydney suburbs

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?

Lock in your termite barrier before the concrete truck arrives

Send us your plans today for a fixed quote, or call and talk to a licensed technician about your site.

Termite barrier work on a Sydney Harbour building site