Services

Airtightness and moisture risk in residential buildings are examined through onsite visits and analysis.

SERVICES

Airtightness and Leakage Diagnostics

Airtightness and leakage are assessed using an on-site blower door test combined with diagnostic thermal imaging to locate infiltration through the building envelope.

When this is used

  • during construction, prior to internal linings and at lock-up

  • in buildings where mould and condensation are visible or suspected

  • prior to, during or following, retrofit and remediation work

What you receive

  • pre-inspection review of plans

  • 2-hour site visit

  • blower door testing to measure airtightness (ACH₅₀)

  • thermal imaging to identify leakage paths

  • a concise report including airtightness results, documented leakage locations, and practical recommendations

Standard blower door test

Blower door testing can also be provided as a standalone airtightness test, including measurement of airtightness (ACH₅₀) and documentation suitable for project records or Passive House certification. Basic identification of major air leakage locations is included. Repeat testing on the same building is typically charged at a reduced rate, reflecting the reduced setup and familiarity with the building.

Fees

Airtightness and leakage diagnostics are typically $1,600 (ex GST)

Standard blower door test from $1,100 (ex GST)

Repeat testing from $800 (ex GST)

Service Area

This service is provided in Tasmania and the Melbourne metropolitan area. Travel fees may apply.

Moisture, Condensation and Mould Risk

This assessment looks at how moisture is behaving in a building, considering air movement, surface temperatures, insulation continuity, ventilation, and occupant use together in a system, rather than in isolation.

The focus is on understanding the likely causes of condensation or mould and identifying which factors are most important in practice, rather than simply recording visible symptoms.

When this is used

  • mould or condensation is visible or suspected
  • indoor humidity or comfort issues are reported
  • changes have been made to insulation, airtightness, ventilation, or heating
  • moisture behaviour does not match expectations

What you receive

  • review of relevant drawings and context
  • on-site inspection of affected areas
  • targeted use of thermal imaging where helpful
  • a concise report outlining observations and practical recommendations

Fees

Fees are scoped per project and depend on building size, complexity, and the location of moisture-affected areas. Additional contractors may be required where access to interstitial spaces is necessary.

Service Area

This service is provided in Tasmania and the Melbourne metropolitan area. Travel fees may apply.

Hygrothermal (WUFI) Risk Assessment

This assessment is used where moisture behaviour cannot be confidently inferred from precedent or inspection alone.

WUFI is used as an analytical tool to explore how heat and moisture may move through a specific wall, roof, or floor assembly under defined assumptions. Results are interpreted to identify conditions associated with elevated condensation or mould risk and to support design or remediation decisions. This assessment is not a compliance check and do not guarantee performance.

When this is used

  • assemblies are non-standard or unfamiliar

  • moisture risk is uncertain or contested

  • alternative assemblies are being compared

  • condensation or mould risk needs to be assessed in advance

What you receive

  • a concise report summarising modelling results and their interpretation

  • identification of locations and conditions associated with increased risk

  • a clear statement of assumptions and limitations

Fees

Fees are quoted after review of the relevant drawings and confirmation that hygrothermal simulation is appropriate for the project.

Service Area

This service can be performed remotely.

If you’d like to discuss a project, contact us.

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