Decontamination Decontamination is the process of removing
contamination from all areas of concern. This may be aesthetic but more
importantly is the removal of health hazards from surfaces and air.
There is a very specific meaning of decontamination which is the removal and or dilution of contamination and rarely , if ever , means killing organisms. With biological agents such as bacteria and mould
killing is almost impossible and even when possible invariably leaves toxic and
allergenic residues. The research paper by (Wilson et al) shows how destroying mould
is almost impossible and invariably leaves toxins and even carcinogens.
While many believe mould is the main cause of building related illness it is now apparent many other contaminates are present (see consensus document) . The following two peer reviewed papers show evidence of bacterial and secondary metabolite contaminates and their heath impact and the World Health Organisation (WHO 2009) provides a detailed insight into the contamination and health issues likely in water damaged properties.
The WHO published a briefing document (77) which again shows that inhalation of mould
mycotoxins increases the health hazard of mould by 40 times.
With approximately 25% of the worlds population
genetically pre disposed to health impact from mould it may be no surprise that
not all in any building have health effects.
The differences in personal response to exposure or
dose, will influence the decisions on decontamination protocol.
Differences in approaches to decontamination are
generally based on level of cleaning and reflective cost against the health
impact of the worst case.
Generally speaking all mould and associated
contaminates are allergenic but some are toxic or are capable of producing
toxins.
Detailed decontamination can be very expensive and
there can never be absolute guarantees of success.
Building Forensics offer
‘Air Decontamination’ as well as ‘Building and Surface Decontamination’
services but not without a survey taken first! Buildings need to be assessed to
establish the correct decontamination process and suitability.
