ROCKWOOL Ltd, a leader in stone wool insulation, has
answered the need for a thermally efficient, non-combustible flat roof
insulation by launching a new product, HARDROCK (DD) TRB.
HARDROCK
(DD) TRB (Thermal Roof Board) is a rigid dual-density stone wool insulation
which is purpose-designed to give an enhanced thermal performance across roofs
that are subject to maintenance-only foot traffic.
Manufactured
using ROCKWOOL’s patented dual density technology, this A1 non-combustible
thermal roof insulation board is ideal for large flat roof areas typically
found on storage, logistics and distribution centres, as well as for education,
healthcare and residential roofing applications.
"The roof is often overlooked in terms of fire
safety, particularly from a regulatory standpoint - which can result in
specifiers inadvertently yet routinely introducing a weak link into the
building envelope via the unconsidered ‘fifth façade’", comments Will
Wigfield, Product Manager at ROCKWOOL.
“However, there now exists a non-combustible flat roof
insulation capable of meeting stringent thermal requirements in just one layer
– offering contractors a quick and easy install without compromising fire
safety. HARDROCK (DD) TRB achieves the highest-attainable Euroclass A1 rating
under EN 13501-1 meaning that it simply will not burn.”
HARDROCK (DD) TRB is
easy to handle on site, and in the majority of applications can be securely
installed within a mechanically-fixed single-ply waterproofing system using
just one fixing per board, in contrast to the multiple fixings needed with PIR
/ PUR foam board installation. The result is a quick and simple
installation, reducing any risks of cold bridging that may otherwise compromise
thermal performance. HARDROCK (DD) TRB is also compatible with all commonly
used flat roof membranes, including single-ply and EPDM, bitumen membranes and
liquid-applied systems.
With a length of
2000mm and a width of 600mm, HARDROCK (DD) TRB is supplied in a
choice of four thicknesses – 145mm, 175mm, 190mm and
230mm – catering for commonly requested U-values ranging from
0.25 W/m²K to 0.15 W/m²K in a single layer.
Manufactured from basalt rock, which is melted, spun
and bound to create stone wool insulation boards, HARDROCK (DD) TRB is
dimensionally stable, eliminating the need for any mechanical fasteners to
prevent differential thermal expansion and undue stress on the waterproofing
membrane. It is also water repellent and completely unaffected by damage caused
by the freeze/thaw cycle.
HARDROCK (DD) TRB
Thermal Roof Board is available as a specification-only product, supported by
ROCKWOOL’s Technical Solutions team who can provide U-value calculations, BIM
modelling, and detailed technical guidance for all projects.
