Moisture and Mould Reduction
Standard concrete slabs can come in contact with the ground. As a result, moisture can wick through the
concrete and contributes to the growth of mould and mildew under flooring overlays and damages expensive
architectural flooring finishes, floor tiles or carpets. Keeping the top and bottom of the concrete floor slab dry
reduces these problems and reduces excessive moisture in a building which has been associated with
adverse health effects, particularly asthma and respiratory diseases.
CUPOLEX® provides an under slab void and results in minimal concrete contact with the soil. The unique
advantage over any other slab foundation system is the integrated void spaces under the concrete slab.
There are three major aspects.
Vapor Intrusion Protection
Even when soil and groundwater standards are met at some sites, vapours of volatile chemicals can migrate
along subsurface pathways and find their way into neighbouring buildings at levels that compromise indoor air
quality. Long time exposure to such chemicals can potentially have damaging effects on human health. The
extent and likelihood of adverse human health effects are dependent on a number of factors including, but not
limited to, the concentration of the contaminant and the duration of exposure. When a contaminant
concentration in indoor air is high, it may be possible to detect it by a telltale odour, and the need for remediation
can be recognized early and applied. However, in instances where concentrations are low and not readily
discernable, the determination of the need for remediation is more challenging. Source: ITRC (Interstate
Technology & Regulatory Council).
CUPOLEX® having a air void under the foundation lends itself perfectly for the venting of these harmful gases
out of the building envelope and into the external atmosphere.
Radon gas is only an issue near uranium mining areas in Australia however methane gas emissions are more
The CUPOLEX® system allows Volatile Organic Compounds (VOC's), Radon Gas and humidity or moisture to
be passively vented away from the slab.
Developments built on former dump sites with high levels of methane or areas with high levels of toxicactivity
are particularly suited to the use of CUPOLEX®.