Roxul Industrial Insulation Process - Manual (Page 120)

EN 1609 & EN 13472 Partial immersion
Tested in accordance with two mineral wool
standards, e.g. the EN 1609 standard for boards
(slabs) and the DIN EN 13472 standard for pipe
insulating products. The maximum permissible
water absorption in these testing procedures
must not exceed 0.062 lb/ft
3 (1 kg/m 3 ). ProRox ®
insulation products are hydrophobically treated
and therefore fulfill these requirements.
BS 2972 Section 12 Total Immersion
This part of the standard covers the determination
of the amount of water absorption by mineral fiber
insulation. The test sample is immersed com-
pletely in tap water for two hours with the upper
surface approximately 1" (25 mm) below the
surface of the tap water. After the immersion
period, the sample must be drained for 5 minutes.
The water absorption is calculated using the
weight difference before and after testing and the
increase is expressed in lb/ft
3 (kg/m 3 ).
BS 2972 Section 12 Partial Immersion
This part of standard covers the determination of
the amount of water absorption by mineral fiber
insulation. The test sample is immersed vertically
with one 6inch by 1inch side 1/4" (6 mm) below
the surface of tap water for 48 hours. After the
immersion period the sample must be drained for
5 minutes. The water absorption is calculated
using the weight difference before and after
testing and is expressed in lb/ft
2 (kg/m 2 ).
NOTE
British Petroleum places specific demands
on the water repellency of mineral wool
products. In accordance with the BP172
standard, the samples are heated for 24
hours at 480 °F (250 °C). The water repel-
lency is tested afterwards in accordance with
BS 2972 Section 12 Partial Immersion.
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