Knauf Insulation’s
Earthwool RainScreen Slab has been certified by the British Board of Agrément
for use in high-rise residential applications.
The BBA certification
follows the December 2018 update to Approved Document B, which mandates the use
of non-combustible materials achieving a Euroclass Reaction to Fire
Classification of A1 or A2 s1-d0 in the external walls of certain buildings
over 18m in height. Earthwool RainScreen Slab has the best possible Euroclass
Reaction to Fire classification of A1.
“Non-combustible
insulation is the best choice for architects, specifiers and contractors as it
will not contribute to the development or spread of fire” said Steve Smith,
Head of Product Management and Business Intelligence at Knauf Insulation.
“With the Government
consulting on further changes to Approved Document B, it’s prudent to use
non-combustible insulation in every application, not just high-rise façades.
This BBA certificate ensures customers specifying or installing Earthwool
RainScreen Slab can have absolute confidence in its quality and performance.”
Earthwool RainScreen
Slab has a thermal conductivity of 0.034W/mK. When closely butted together the
slabs will interlock, eliminating air leakage. It offers superior robustness
and durability, with a water repellent additive to preserve its integrity while
exposed during construction. It has been wind load tested by the Building
Research Establishment to a maximum design pressure of 3,600Pa or 76m/s – the
equivalent of a category 5 hurricane.
Earthwool RainScreen
Slab is optimised for ease of installation. The improved robustness of the
product makes it easy to manoeuvre in place, and it is designed to adapt to
minor imperfections in the substrate.
Earthwool RainScreen
Slab is manufactured using ECOSE Technology, Knauf Insulation’s patented
bio-based binder, which makes the manufacture of its products 70% less
energy-intensive compared to mineral wool products made using traditional
formaldehyde-based binders.
