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Facts about Mould and
Safety Tips
The Myth about Chlorine Bleach
US spelling - mold
Some companies advocate the use of
Chlorine Beach as a mould remover for remediation projects. We DO NOT use or recommend chlorine
bleach [sodium hypochlorite] to kill mould or disinfect mouldy areas.
- Chlorine is not an effective or
permanent killer of mould or the mould spores and does not address the odours
caused by mVOC's (volatile organic compounds) that are released by the live and
dying mould.
- Chlorine bleach is too diluted
to permanently kill mould unless the mould is sitting on top of a hard
non-cellulose surface*.
- As chlorine constantly escapes
through the plastic walls of its containers, it's effectiveness is further
reduced by up to 50% in 90 days in a never opened container.
- Mould, by nature of the
physiology, has a hyphae that extends out from the body of the mould cell. This
hyphae can penetrate and intertwine into the fibers of the substrate, in this
case, the dry wall or wood, microscopically piercing the surface of these
items. The ion structure of the chlorine prevents it from penetrating into
those same porous materials.
- The chlorine stays on the
outside surface, while the mould penetrates these materials. The chlorine can
never reach into the areas that the hyphae grow. So the mould's hyphae remain
untouched and intact. When moisture re-enters the area where the hyphae have
embedded themselves, the mould will continue to grow.
- On most porous building
materials that contain, cellulose such as wood timbers, drywall, chipboard,
plywood, etc., bleach can change the color of the mould, but will only slow down
mould growth for about 3 weeks. It is not a long lasting solution.
- Chlorine Bleach is not
registered with the EPA as a disinfectant to kill mould. On products imported from the USA, an EPA registration
number for killing mould is listed on the label of any brand of product that is
recognized for that purpose. Chlorine bleach does not have this
registration.
- Beach can also ruin the surface
finish on many substances, discolouring fibers and dissolving coatings and
tarnishing certain finishes.
- * A recent study has found that
chlorine does have some limited effect on killing mould on some hard surfaces,
where the hyphae does not penetrate the surface. These would include ceramic
tile, formica counters or steel appliances. However, the chlorine will not
address the spores or the odours.
I
Call for an appointment.
- Telephone: (778) 786-1552
Servicing the following areas: The Greater Vancouver area, The Lower Mainland; Abbotsford, Burnaby, Chilliwack, Coquitlam, Delta, Hope, Ladner, Langley, Maple Ridge, Mission, North Vancouver, Pemberton, Powell River, Richmond, Squamish, Surrey, West Vancouver, White Rock, Whistler
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