Rockwool is manufactured from a
volcanic rock to which coke and limestone are added. The
molten material is spun into wool and small quantities of
resin binder and mineral oil are added to lock the strands
together and make them water repellent. The wool is formed
into a mat, which is carried through ovens where it is cured
and compressed giving good structural strength. This mat is
used as the core for Firemaster panels.
Rockwool has outstanding
properties and performance that makes it especially suitable
for the Firemaster panel:
Fire - Superb fire properties
and rated A1, the safest under the new Euroclass reaction to
Insulation - Rockwool has
excellent thermal and acoustic properties.
Biological - Rockwool is
completely rot proof and does not encourage the growth of
mould or bacteria.
Environment - No. CFCs or
HCFCs used in manufacture and it is fully recyclable.
Water Resistance - Rockwool
mineral wool repels water. The vapour resistance is
negligible and usually considered to be same as that of air.
Rockwool non - carcinogenic
properties. UK and European Legislation.
The safety of Rockwool mineral
wool insulation is confirmed by UK and EU health and safety
legislation whereby Rockwool is free from suspicion of
carcinogenic effects, i.e. is not classified as a possible
human carcinogen (UK HSE "CHIP" Regulations and European
Directive 97/69 EC).
A unique feature of Rockwool
fibres is that they are bio-soluble - any fibres that are
possibly inhaled are soluble in the human body, but are not
sensitive in this respect to humidity or other fluids outside
Fraunhofer ITA certificate no.
02G98006A details the results of tests undertaken on Rockwool
stone wool in accordance with the required EU method. These
results confirm that it is not necessary to classify Rockwool
fibres under UK and EU regulations.
The conclusion that Rockwool
products are safe follows unprecedented world-wide research
rigorously examined by independent experts and is further
supported by the International Agency for Research on Cancer.
In October 2001 the
International Agency for Research on Cancer ("IARC" part
of the World Health Organisation) reviewed its 1987
classification of mineral wool fibres and removed them from
its list of possible carcinogens, reflecting the increase in
scientific knowledge and the established safety of mineral
wool for workers and building occupiers.