Dupont Realshield.qxp (Page 1) - DuPont™ Tyvek

Gas protection
Occupants of buildings must be
protected against harm from gases
which occur in the ground and may
seep into the building through
cracks and gaps in the structure,
eventually rising to harmful levels.
Building regulations require
precautions be taken:
‘to avoid danger to health and
safety caused by substances
found on or in the ground to
be covered by the building’
The three gases which constitute
the main threats to health are:
❏ Radon - a naturally occurring
radioactive gas which, over a
long period of time, can induce
lung cancer.
❏ Methane - a flammable
asphyxiating gas which can
occur naturally but is often
given off by landfills.
❏ Carbon dioxide - an asphyxiating
gas, often produced by landfills.
The most effective way to prevent
those gases from reaching the
interior of the building is to install a
continuous gas barrier across the
whole footprint of the building.
The DuPont range of Realshield
Gas Barriers offers you a choice of
high performance barriers which
are easy to install in any type of
building, providing protection for
the occupants.
DuPont Realshield Gas Barrier
Gas rising from ground
Figure 1
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