We Use Green, Non-Toxic Methods Wherever Possible:
Our preferred method of mould disinfection is localised steam vapour disinfection for porous materials/home furnishings as well as hard surfaces like walls, windows, frames and sills.
Other approaches use ultraviolet germicidal irradiation (UVGI) which is a light based method of surface sterilizing objects and the air in room volumes.
Air and surface sterilisation and disinfection can also be achieved with ozone shock-treatment. We are experienced in effectively treating small as well as very large industrial volumes and HVAC systems.
We can also encapsulate large areas of mould and dispersed biofilms and then make these areas safe for removal and subsequent surface disinfection/sterilisation.
Sub-floor contamination is dealt with using copper or boric-acid/borate based aerosol delivery to rapidly kill microflora causing odours.
Antimicrobial and antifungal paints are also suitable for returning indoor areas to a safe and hygienic condition.
For rapid disinfection and sterilisation of rooms we also use mobile decontamination equipment in combination with a pharmaceutical grade biocide having broad spectrum pathogenic and sporicidal activity applied as a dry mist. Disinfection and sterlisation occurs due to microcondensation in the vapour phase causing rapid oxidation of microbial pathogens. This works against bacteria, fungi and viruses, and is also effective against methicillin-resistant (MRSA) bacteria such as Staphylococcus, as well as for Enterococci sp., Candida sp., Escherichia coli, Salmonella sp., Clostridium difficile, Norovirus and Rhinovirus amongst others. This environmentally friendly dry bio-decontamination process is compatible with a variety of materials, leaving no residue and decomposes into water and oxygen.
The method is validated against the AFNOR NF-T 72 281 version 2009 validation standard for bactericidal, fungicidal and sporadical disinfection by airborne means. The reduction rates are: +5 log kill for bacteria (99.999% mortality), +4 log kill for fungi (99.99% mortality) and +3 log kill for spores (99.99% mortality). Each room was sealed and treated with the required volume of reagent and the dwell time and re-entry requirements met on a room-by-room basis.
HEPA (high efficiency particulate air) vacuuming of objects and surfaces.
HEPA in-room air scrubbing to remove particulate matter (PM2.5 and PM10).
Microfiber wiping incorporating the HEPA sandwich technique.
Use of germicidal wipes as required.
Strip out, bag and discard.
General Procedural Example (High Level Disinfection/Sterilisation):
Firstly we commence with an onsite inspection for visible signs of biological contamination. This may include evidence of mould, bacteria or other pathogens.
Indoor air quality and surface samples are then taken to our Laboratory for analysis and results interpreted and a report is written for your specific indoor environment.
The methods of microbial decontamination are matched against the contamination level, site access, usage of the facility and client expectations. Mobile decontamination equipment designed to produce extremely fine droplets (averaging ~5-10 microns in diameter) disperse an aerosol solution throughout the room. This aerosol lays down a microscopic layer of disinfection agent on all contact surfaces, even penetrating hidden recesses to achieve the desired level of disinfection.
Bio-decontamination efficiency is measured using biological-indicators and/or Petri-plate culture that show successful bio-burden reduction to acceptable levels.
Follow-up indoor air quality and surface testing is undertaken prior to clearing the building for re-entry.
The areas undergoing treatment will need to be vacated for a period of 4-8 hours prior to re-entry by clients where vapour-phase misting is applied. Where steam disinfection or UVGI is applied, the time required for re-entry is immediately following equipment removal, thereby reducing inconvenience. Re-entry following ozone shock-treatment depends on the initial screening, the risk assessment and other factors – however re-entry is generally within 24hrs, post-treatment. We always use rigorous monitoring equipment and adhere to standard for human exposure for your safety and peace of mind.
Properties with more advanced levels of mould will require further cleaning and/or remediation to ensure removal of dead mould from localized areas.