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Asbestos Testing in Australia: What Replaced AS 4964 and What Painters Need to Know

AS 4964-2004 has been superseded by AS 5370:2024. This guide explains the new scope, microscopy methods, sampling decisions and practical implications for Australian painting and refurbishment work.

By ThatPainter Team Published
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Asbestos testing to Australian Standard AS 4964 is no longer based on the current standard. Standards Australia identifies AS 5370:2024, Sampling and qualitative identification of asbestos in bulk materials, as the replacement for AS 4964-2004. For a painting, renovation or maintenance project, that means new sampling and identification work should be specified against AS 5370:2024, while an older report that cites AS 4964 should be read in its original context and checked for whether its scope still answers your question.

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AS 5370:2024 keeps Polarised Light Microscopy (PLM) as the primary identification approach and describes Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) as supplementary pathways for ambiguous, complex or fine-grained samples. It also expands the stated scope to asbestos in soils and naturally occurring asbestos species. The practical priority is to use a suitably qualified asbestos professional, define the materials and areas to be sampled, and obtain a report that clearly identifies the standard and any limitations.

Is asbestos testing to Australian Standard AS 4964 still current?

No. Standards Australia says AS 5370:2024 supersedes AS 4964-2004, the former method for qualitative identification of asbestos in bulk samples. AS 4964 should therefore be treated as a superseded designation, not as the current Australian reference for new work.

The change matters whenever a client, contractor, consultant or project specification still uses the words “test to AS 4964”. Ask whether the requirement can be updated to AS 5370:2024 and confirm the applicable state, territory, workplace and environmental guidance separately. The Standards Australia material cited here does not establish one national rule for every project, regulator or laboratory, so a standard change should not be confused with a statement about legal acceptance in a particular jurisdiction.

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AS 4964-2004 compared with AS 5370:2024

Issue AS 4964-2004 AS 5370:2024
Status Superseded method Current replacement identified by Standards Australia
Core subject Qualitative identification of asbestos in bulk samples Sampling and qualitative identification of asbestos in bulk materials
Stated scope Earlier bulk-sample method Bulk materials, with scope expanded to soils and naturally occurring asbestos species
Primary approach described by Standards Australia Earlier method framework Polarised Light Microscopy (PLM)
Additional pathways Do not assume the new scope or pathways from an old citation Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) can supplement PLM where results are ambiguous or samples are complex or fine-grained
Typical relevance Historic reports and specifications Current sampling and identification work in construction, mining and contaminated-land settings

The replacement is not simply a change of date on a certificate. Standards Australia describes AS 5370:2024 as building on the previous method while updating testing methodologies and broadening the materials covered.

What does AS 5370:2024 cover?

AS 5370:2024 addresses two linked tasks: obtaining representative samples and identifying asbestos qualitatively in bulk materials. The standard’s stated scope includes asbestos in soils and naturally occurring asbestos species, in addition to the bulk materials covered by the earlier method.

That wider scope can be important on a painting or refurbishment project that extends beyond a visible building surface. Soil may be disturbed by access works, drainage, landscaping, demolition or service installation. Naturally occurring asbestos is a separate possibility from asbestos deliberately added to a manufactured product. A project brief should say which materials and ground areas are in scope rather than assuming that a test of one painted or cementitious product answers every asbestos question on the site.

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Standards Australia identifies construction, mining and contaminated-land management as settings where the expanded scope may be relevant. For painters, the construction and refurbishment context is usually the immediate concern, but the same sampling principles matter if work crosses into soil or demolition waste.

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How are PLM, TEM and SEM used under the current approach?

PLM remains the primary identification method described by Standards Australia. TEM and SEM are supplementary techniques that may help clarify an ambiguous result, particularly when a sample is complex or contains very fine grains.

In practical terms, PLM is the starting point for a bulk-material identification. A laboratory examines the sample’s optical characteristics and reports whether asbestos is identified under the method. If the material makes interpretation difficult, the laboratory may recommend or use a supplementary electron-microscopy pathway. TEM and SEM should not be presented as automatic replacements for PLM; they are additional tools selected to resolve uncertainty or improve identification in challenging material.

The exact preparation, examination, decision rules and reporting requirements are set by the standard itself. A short web summary cannot substitute for purchasing and applying the full document. When a project depends on a defensible result, ask the laboratory to state which standard, method and supplementary technique were used, and why any additional analysis was considered necessary.

When should a painting project arrange asbestos sampling?

Arrange professional sampling before work that could disturb a suspect material, especially when the material’s composition is unknown and the planned preparation could create dust or debris. Painting often involves scraping, sanding, drilling, chasing, pressure cleaning, removal of coatings or demolition of adjoining components. A visual inspection alone cannot establish whether asbestos is present.

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Sampling is particularly worth resolving before:

  • Removing or aggressively preparing old textured, sprayed, sheet, cementitious, insulation, adhesive or coating materials whose composition is undocumented.
  • Cutting through walls, soffits, eaves, linings, backing boards, pipe lagging or other concealed components to install services or access repairs.
  • Demolishing or replacing a substrate rather than simply coating an intact surface.
  • Excavating soil, breaking slabs or disturbing fill as part of access, drainage or landscaping work.
  • Working on a site where previous surveys cite AS 4964 but do not cover the area, material or proposed disturbance.

The trigger is not the age of a building alone. It is the combination of uncertainty, the material or soil that may contain asbestos, and the disturbance the job will cause. If the work plan changes, the original sampling scope may no longer be enough.

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How do you commission asbestos testing to the current standard?

Start with the project information a sampler needs: the address, areas to be disturbed, materials and layers involved, planned preparation method, access constraints, and whether soil or naturally occurring material is relevant. Then use the following sequence.

  1. Define the decision. State whether you need to know if a particular product contains asbestos, whether several layers need separate consideration, or whether soil and fill are also included. “Test the building” is too vague to produce a useful sampling plan.
  2. Provide existing records. Give the consultant any prior survey, renovation record, product information or report. Mark which areas have changed since that document was prepared. A report that cites AS 4964 may still describe what was sampled accurately, but it does not automatically cover new areas or the current standard’s expanded scope.
  3. Use a competent asbestos sampler and laboratory. The supplied sources do not set a universal accreditation rule for every Australian jurisdiction. Check the requirements of the project owner, regulator, workplace system and local guidance before appointing a provider.
  4. Agree the sampling plan. The plan should identify the locations, materials, layers and soil areas to be sampled, together with how samples will be labelled, transported and tracked. Ask how the provider will prevent cross-contamination between samples.
  5. Control the work area. Sampling itself can disturb a material. The person carrying it out should specify the controls, access restrictions and cleanup arrangements needed for the task. Do not turn an internet description into a do-it-yourself sampling procedure.
  6. Request testing to AS 5370:2024. Have the quotation and final report name the current standard, not merely “asbestos test” or the superseded AS 4964 designation.
  7. Ask how uncertainty will be handled. Confirm when PLM is expected to be sufficient and what would trigger TEM or SEM. This is especially important for fine-grained, mixed or otherwise difficult samples.
  8. Match the report to the work plan. Before painting or demolition starts, compare the tested locations and materials with the actual method statement. A negative result for one sample is not a clearance for an untested adjacent material.

What information should an asbestos test report make clear?

A useful report should allow a project manager, painter and safety adviser to connect each conclusion to a specific sample and location. Ask the provider to make the following points easy to find:

  • The site, room or external location and a unique sample identifier.
  • A description of the sampled material, including layers or mixed components where relevant.
  • The sampling date and chain of custody or handling information used by the provider.
  • The standard designation: AS 5370:2024 for current work, with any historical AS 4964 reference explained rather than presented as current.
  • The identification method, including PLM and any TEM or SEM work, and the reason supplementary analysis was used.
  • The result for each sample and any limitation that prevents the result being applied to other materials or areas.
  • A clear statement of whether soil, fill or naturally occurring asbestos was included or excluded from the scope.

These are practical reporting questions, not a claim that every item has identical wording in every laboratory report. The controlling document is the purchased standard and any applicable contract or regulatory requirement.

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How should you interpret positive, negative and inconclusive results?

A positive identification means the sampled material was identified as containing asbestos by the stated method. Treat that result as applying to the sampled material and the locations represented by the sampling plan; do not silently extend it to every material on the site.

A negative result means asbestos was not identified in that particular sample under the reported method. It does not prove that an untested layer, hidden component, neighbouring product or soil area is asbestos-free. Recheck the scope whenever the planned work exposes a different material.

An ambiguous or inconclusive result is a reason to pause the affected task and ask the laboratory or consultant what additional sampling or supplementary microscopy is appropriate. Standards Australia specifically describes TEM and SEM as pathways that can help clarify complex or fine-grained samples. Do not select a more sophisticated method solely because its name sounds more definitive; the provider should explain the analytical question it addresses.

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How can a project avoid cross-contamination during sampling?

Cross-contamination controls matter because a trace transferred from one sample, tool or surface can undermine confidence in a result. Standards Australia’s overview points to sampling, sample handling and cross-contamination controls as part of the current approach.

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For the client, the practical checks are straightforward: keep the sampling plan and sample labels consistent; ask how tools, containers and work surfaces are managed between locations; separate samples from unrelated demolition waste; and preserve the laboratory’s identification and transport records. If a result conflicts with the material’s appearance or with another survey, ask whether sampling coverage, handling or material heterogeneity could explain the difference before authorising disturbance.

Can an old AS 4964 report still be used?

An old report can remain useful as historical evidence of what was sampled and what the analyst reported at that time, but its citation does not make it a current AS 5370:2024 assessment. Check its date, locations, sample descriptions, method, exclusions and whether the proposed work is identical to the work originally considered.

Ask the asbestos consultant or project regulator whether the existing information can be relied on, supplemented or replaced. The answer may depend on the jurisdiction, contract and risk controls, none of which are established by the sources supplied for this article. If the report omits soil, concealed materials or naturally occurring asbestos and those are now relevant, commission a scope that addresses them explicitly.

Where can you obtain AS 5370:2024?

Standards Australia says AS 5370:2024 is available through its Store and distribution partners. The reviewed sources do not establish an Amazon listing or any particular reseller, so use the official Standards Australia channel or a verified distribution partner when you need the authoritative document.

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Buying the standard is not the same as being qualified to sample or identify asbestos. Professional users should read the complete requirements, maintain appropriate competence and follow the workplace and environmental controls that apply to their project.

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What should a painter put in the job file?

For a painting business, a concise asbestos decision record can prevent the most common scope errors. Keep the client’s existing survey, a marked-up plan of areas to be disturbed, the sampling report, the method statement, and the written decision about which surfaces may be prepared, coated, isolated or left untouched.

Record the standard used and the date of the report. If the job relies on a legacy AS 4964 document, note that it is superseded and document the professional advice supporting its use or the decision to obtain AS 5370:2024 sampling. Add a change-control step: if scraping reveals another layer, the substrate differs from the plan, or soil becomes involved, stop that part of the work and obtain a revised assessment.

This paperwork does not replace site controls, training or regulatory advice. It creates a traceable link between the material tested and the work the crew is actually being asked to perform.

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What is the practical bottom line for Australian painting work?

Specify AS 5370:2024 for new asbestos sampling and qualitative identification, not AS 4964-2004. Use PLM as the primary approach described by Standards Australia, with TEM or SEM considered when a competent laboratory identifies genuine ambiguity or complex, fine-grained material. Define the sampling scope carefully, include soil or naturally occurring asbestos where relevant, control handling and cross-contamination, and verify jurisdiction-specific acceptance before relying on a result.

The safest interpretation of a test report is narrow and precise: it answers the question asked for the samples collected. It is not a blanket clearance for every surface, hidden layer or area that the painting contract might later disturb.

Frequently Asked Questions

Does AS 5370:2024 cover asbestos in soil?

Yes. Standards Australia says the current standard expands its stated scope to include asbestos in soils and naturally occurring asbestos species. The project brief still needs to say which soil, fill or ground areas are included, because a building-material sample does not answer a soil question.

Is a visual inspection enough to decide whether a surface contains asbestos?

No. A visual inspection can help identify materials that need attention, but qualitative identification requires sampling and laboratory analysis under the applicable method. Do not treat an appearance-based judgment as a current AS 5370:2024 result.

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Can a painter collect a sample and send it to a laboratory?

Sampling can disturb suspect material and create handling and cross-contamination risks. Use a competent asbestos professional and check the workplace, contract and jurisdictional requirements rather than improvising a DIY procedure.

What if a client’s specification still says “test to AS 4964”?

Ask the client, consultant or regulator to confirm whether the specification should be updated to AS 5370:2024. Preserve the old wording in the project record if necessary, but make the current standard and the exact sampling scope explicit in the quotation and report.

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