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Post Remediation Verification (PRV) & Assessment

Post Remediation Verification (PRV) & Why It Matters

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At EnviroBuilt, your health and safety come first. Once remediation of the buildings structure and contents has taken place, it’s essential to ensure the work has been carried out effectively and according to recognised industry standards.

 

Post Remediation Verification (PRV) confirms that your home or workplace is truly clean, safe, and ready to re-occupy. By having PRV carried out independently by a qualified Indoor Environmental Professional (IEP), you gain confidence that the remediation was successful and that your environment supports both personal health & wellbeing and also the long-term building health.

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Independent Verification

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​Our team at EnviroBuilt act as independent Indoor Environmental Professionals (IEPs) providing PRV sign off services on your remediation project. We also work exclusively with trusted, independent IEPs when external PRV sign off is required on our remediation projects.  ​​

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Independent PRV assessment is the final step in the remediation process to ensure completeness and

transparency. Separating remediation works from PRV gives you peace of mind and avoids any conflicts of interest.

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How PRV Works​

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A typical PRV process includes:​

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  • Visual Assessment – confirming visible cleanliness and absence of mould growth

  • Moisture Verification – ensuring materials are dry and all sources of water have been resolved

  • Air and/or Surface Sampling – where indicated, targeted testing provides additional assurance that the environment is safe

  • Pass/Fail Determination – objective, evidence-based criteria are applied before areas are signed off

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PRV Certification​

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PRV Certification is issued by the independent IEP and provides:​​

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  • Documentation of inspection methods and findings

  • Identification of any remaining issues requiring rework

  • A clear statement of compliance indicating that the PRV criteria has been met ​​

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This ensures you have a clear record that remediation has been completed successfully.  Vital for occupants, insurers, landlords, and tenants alike.

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Health Context​

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Functional and integrative medicine practitioners highlight the impact of ongoing mould exposure on immune, neurological, and respiratory systems (BANT, 2025; IFM, 2025; Harding et al., 2019; Hyvönen et al., 2020; Kraft et al., 2021).

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Without proper verification, hidden mould or unresolved moisture or water ingress issues can persist, leading to:​

  • Respiratory issues such as asthma, wheeze, and cough (Mendell et al., 2011; WHO, 2009)

  • Fatigue, allergies, and neurological impacts (Shoemaker et al., 2010)

  • Chronic health issues due to recurrent exposure in homes where remediation was incomplete or not independently verified (Caillaud et al., 2018; UKHSA, 2022)​

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In conclusion, PRV is not just about compliance, it’s about protecting health. Through the adoption of PRV, you safeguard not only your property but also the health of the people who live or work within it.

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References:​​

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  1. British Association for Nutrition and Lifestyle Medicine (BANT). (2025) Find a Practitioner. Available at: https://bant.org.uk/find-a-practitioner (Accessed: 21 August 2025).

  2. Caillaud, D., Leynaert, B., Keirsbulck, M. & Nadif, R. (2018) Indoor mould exposure, asthma and rhinitis: findings from systematic reviews and recent longitudinal studies. European Respiratory Review.

  3. Environmental Protection Agency (EPA). (2008) Mold Remediation in Schools and Commercial Buildings.Washington, DC: U.S. EPA.

  4. Institute for Functional Medicine (IFM). (2025) Find a Practitioner. Available at: https://www.ifm.org/find-a-practitioner (Accessed: 21 August 2025).

  5. Institute of Inspection, Cleaning and Restoration Certification (IICRC). (2024) ANSI/IICRC S520: Standard for Professional Mold Remediation. Las Vegas: IICRC.

  6. Mendell, M.J., Mirer, A.G., Cheung, K., Tong, M. & Douwes, J. (2011) Respiratory and allergic health effects of dampness, mold, and dampness-related agents: a review of the epidemiologic evidence. Environmental Health Perspectives, 119(6), pp.748–756.

  7. New York State Department of Labor. (2016) Mold Program: Licensing Requirements. Albany, NY: NYSDOL.

  8. Shoemaker, R.C., House, D.E. & Ryan, J.C. (2010) Structural brain abnormalities in patients with inflammatory illness acquired following exposure to water-damaged buildings: a volumetric MRI study. Neurotoxicology and Teratology, 33(1), pp.1–9.

  9. Society of Occupational Medicine (SOM). (2025) Occupational Health and Indoor Air Quality Resources.Available at: https://www.som.org.uk (Accessed: 21 August 2025).

  10. UK Government. (2023) English Housing Survey: Headline Report 2021–22. London: Department for Levelling Up, Housing and Communities.

  11. UK Health Security Agency (UKHSA). (2022) The Burden of Disease from Indoor Damp and Mould in England.London: UKHSA.

  12. UK Parliament. (2023) Damp and Mould in Housing: House of Commons Library Research Briefing CBP-9905.London: House of Commons Library.

  13. World Health Organization (WHO). (2009) WHO Guidelines for Indoor Air Quality: Dampness and Mould.Copenhagen: WHO Regional Office for Europe.

  14. Zhang, X., Sahlberg, B., Wieslander, G., Janson, C. & Norbäck, D. (2012) Dampness and moulds in workplace buildings: associations with incidence and remission of sick building syndrome symptoms, asthma and respiratory infections. Indoor Air, 22(6), pp.451–461.

  15. Quansah, R., Jaakkola, M.S., Hugg, T.T., Heikkinen, S.A. & Jaakkola, J.J.K. (2012) Residential dampness and molds and the risk of developing asthma: a systematic review and meta-analysis. PLoS ONE, 7(11), e47526.

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