The excellent insulating properties of
EPS (Expanded Polystyrene), derived from its micro cellular closed
cell construction, provide one of its most important and widely used
From sub zero temperatures as low as -40°C experienced in freezer
insulation, to the high temperatures around 60°C occurring on hot water
pipes, EPS provides efficient, cost effective insulation. In countless
everyday situations EPS is widely used for its insulating ability. In
the construction and food industries EPS is the first choice for
EPS has exceptional insulation
properties, with a thermal resistance (R value) of 1.31 per 50mm of
thickness for S class material, as defined by AS 1366 part 3: 1992. This
makes it ideal for wall and under floor insulation and external cladding
Because of its cellular structure
EPS is dimensionally stable, and will not settle over time. EPS used and
installed correctly does not deteriorate with age and as such is able to
deliver constant R values for the life of the building.
The almost exclusive use of EPS as
the insulation material for cool-stores and freezers is testament to its
insulation ability in the most demanding of all insulation applications.
Equally, for the transport of
chilled food such as fish, EPS is the ideal material for the boxes used
in this application.
For more information on EPS, see New Zealand Plastic's
Heat always flows from warmer to colder areas.
This movement or transfer of heat occurs by one or any combination
of three following methods:
Heat energy is transferred directly
through a materials, in contact with each other, where a temperature
difference exists. Heat transfer along a metal rod is a simple example
Air, when heated, becomes less dense than
the surrounding air and rises upwards. The denser and cooler air flows
downwards. These air movements, known as convection currents, can occur
in spaces between the framing members of ceilings or walls of buildings
causing a significant amount of heat loss.
Heat energy may be radiated across the air
space and then be absorbed by another body. Radiant energy from the sun
is an example, where this energy may be absorbed as heat by the human
An example of all three methods of heat flow
occurs in the wall space of buildings. The following graphs demonstrate
the effects of adding a reflective surface and of filling the air space
with an insulation material such as EPS. Clearly, heat transfer by
convection, a major component of heat flow, can be almost eliminated by
the use of insulation.
Moisture Resistance Insulating Properties Product Range
Abelx Software Solutions
Follow these links
for more info on Insulform Polystyrene Building Blocks