AS 3660.1 Termite Management for New Buildings
ermites are silent destroyers that cause millions in property damage each year across Australia. That’s why the Australian Standard AS 3660.1 exists—to ensure that new homes are properly protected from termite attacks.
This page breaks down what’s inside AS 3660.1 and how it applies to homeowners, builders, and inspectors, especially in areas like Perth where termite risk is high.
Table of Content
Chemical Systems
Physical Systems (Stone, Mesh, Flashing)
Concrete Slab as Barrier
Combination Systems
What Is AS 3660.1?
AS 3660.1 – Termite Management for New Buildings is the official Australian Standard that outlines how to design and install termite management systems for new residential and associated structures like sheds, carports, and garages.
It is referenced in the National Construction Code (NCC) and applies to:
Class 1 buildings (houses, townhouses)
Class 10A buildings (garages, carports)
Why Termite Management Is Critical
Subterranean termites can enter buildings undetected through tiny gaps in concrete or around service penetrations.
Termite damage often isn’t covered by insurance.
Areas like Coastal Queensland, WA, and NSW are considered high risk.
The standard aims to deter concealed entry, not prevent termite presence on site.
Termite Management Systems Covered in AS 3660.1
Chemical Systems
Usually installed under slab and around building perimeter
Requires reticulation systems if the chemical life is shorter than the building’s
Must use APVMA-registered chemicals
Life expectancy of the system must be proven
Concrete mowing strip (300mm x 50mm) often required for perimeter treatment
Physical Systems
Graded Stone barriers use specially shaped granite particles that are too hard for termites to chew through and too tightly packed for them to penetrate. These physical barriers are typically installed under the slab, around the perimeter of the building, or surrounding service penetrations to deter concealed termite entry.
Stainless Steel Mesh systems consist of high-grade, corrosion-resistant mesh installed beneath concrete slabs or around pipe penetrations. The tight grid structure physically blocks termites from gaining entry and is highly durable in both wet and dry conditions.
Ant Caps and Flashings are commonly used in homes with suspended floors. While they do not stop termites from entering a structure, they are designed to force termites into visible areas, making their presence easier to detect during inspections.
Concrete Slab as a Barrier
Slabs built according to AS 2870 and AS 3600 can act as termite barriers
Exposed slab edges assist visual detection
Not foolproof; often paired with other systems
Combination Systems
Often used in split-level, zero-lot, or complex designs
Physical + chemical systems can be combined
Always confirm compatibility with product warranties
Legal & Licensing Requirements
Termite systems must be installed by licensed contractors
In Queensland and WA, two durable notices must be placed (e.g., in meter box)
A Termite Management Certificate must be issued, detailing:
Method of protection
Areas treated
Installer name and licence
Date of installation
Choosing the Right System
Before building:
Discuss termite systems in detail with your builder
Use a Termite Management Acknowledgement Notice
Consider ongoing maintenance needs (chemical = more frequent)
Review warranty terms for each system
Installation & Site Practice
The system must be detailed in building application drawings
Installer must certify installation complies with AS 3660.1
Builders must ensure debris is cleared and systems aren’t compromised
Trade contractors (plumbers, landscapers, etc.) must avoid damaging systems
Termite Management After Construction
Your responsibilities as the homeowner:
Inspect your home annually (or more in high-risk areas)
Don’t breach or cover the termite barrier (e.g., by building garden beds, placing wood chips)
Keep 75mm clearance from weep holes to the ground or paving
Keep loose timber, water tanks, and new service installations away from the perimeter
Suspended Floors & Ventilation
Must maintain 400mm clearance between ground and bearers/joists
Cross-flow ventilation is required to discourage termite activity
Access panels should be provided for inspection and treatment
Book an Inspection in Perth
We inspect termite barriers, installation quality, and compliance with AS 3660.1. Whether you’re building, buying, or just maintaining your home—book a timber pest inspection today.
FAQ
Q1: Does AS 3660.1 prevent termites completely?
No—it deters concealed entry and aids in early detection.
Q2: Can I use treated timber instead?
Yes, termite-resistant timber (e.g., H2, H3) may suffice in some applications, but may still require additional barriers.
Q3: What’s the difference between chemical and physical systems?
Chemical: Deterrent applied to soil, needs renewal
Physical: Materials that block termite paths, typically permanent
Q4: Are these systems mandatory?
Yes, under the Building Code of Australia, some form of termite management is required in most regions.
Q5: What if I build a garden bed next to the house?
It may bridge or breach the barrier and void your warranty.
Q6: How long do chemical termite barriers last?
The lifespan varies depending on the chemical used. Some products may last 5 to 10 years, while others require replenishment sooner. Reticulation systems can make replenishment easier without disturbing landscaping.
Q7: Is termite protection required for detached garages or sheds?
Yes, if they are classified as Class 10A buildings and are attached to or near the main structure, they may still require a termite management system to prevent bridging.
Q8: Can renovations or landscaping affect termite barriers?
Absolutely. Activities like paving, adding garden beds, plumbing work, or decking can breach the termite barrier. Any changes around the home's perimeter should be reviewed by a professional.
Q9: How do I know if my new home has a termite barrier installed?
Check for the durable notice—usually fixed inside the meter box or near the switchboard. It should include details about the type of system used, areas protected, and installation date.
Q10: Is physical termite protection better than chemical?
Both have pros and cons. Physical systems are typically permanent and maintenance-free, while chemical systems may offer more flexibility in complex builds but need periodic reapplication. Often, a combination of both offers the best long-term protection.