Roxul Industrial Insulation Process - Manual (Page 116)

According to BS 3958 “standard specification for
thermal insulation materials”, the insulation
material shall maintain its general form and shall
not suffer visible deterioration of fibrous structure
when heated to the maximum service temperature.
EN14706 (replaces AGI Q132)
The maximum service temperature replaces the
term classification temperature, which was still
the customary term in the AGI G 132 of 1996. It is
recorded in the laboratory under steady
conditions, and takes into account the delivery
form. The maximum service temperature for flat
products is determined according to the EN 14706
standard and is determined according to the EN
14707 for pipe sections. During the test, the
sample insulation material is loaded with 500 Pa
pressure, which is equal to a load of approximately
10.4 PSF (0.5 kN/m
2 ).
The sample is then heated on one side at a
heating rate of 9 °F/min (5 K/min), until the target
maximum service temperature is reached. The
temperature is then maintained for 72 hours,
before the insulation is allowed to cool down
naturally to the ambient temperature. The
deformation of the insulation is measured
throughout the entire procedure. The deformation
is not permitted to exceed 5 % throughout the
entire testing process.
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