Product
Crown Loft Roll 44 is an unfaced, low density, resilient,
non-combustible, glass mineral wool quilt.
Typical Construction
The Crown Loft Roll 44 insulation is positioned immediately
behind the outer cladding sheet, providing protection to the spacer
system, inner cladding sheet and supporting steelwork against the
heat from an external fire source.
Installation
Following the erection of the building frame and sheeting rails,
the internal profiled metal liner panels are fixed together with
the metal spacer system and thermal break. Seals are applied as
necessary to minimise air leakage.
Crown Loft Roll 44 insulation is positioned over the spacer
system with all quilt edges tightly butted. Profiled metal external
sheets are fixed as soon as possible after the Crown Loft Roll
insulation, to avoid exposure to the weather. Protect the
installation at the end of each work session and during inclement
weather.
Performance
Thermal performance
Crown Loft Roll 44 has a thermal conductivity of 0.044
W/mK.
Crown Loft Roll 44 has been tested or assessed as an approved
insulation material to give 15 minutes insulation time in the fire
wall designs of most of the major cladding system
manufacturers.
Fire walls are tested and certified as complete systems,
comprising cladding sheet, liner sheet, rails, spacers and fixings,
and therefore the system manufacturer’s design and specification
should be followed in detail. The primary consideration in the
specification of a fire wall is the period of fire resistance that
the wall offers. This certification is held by the various system
manufacturers.
Knauf Insulation manufacture a range of fire safe products
suitable for use in this application that can also supply the
thermal resistance required to enable the system to achieve the
required U-value. Refer to system manufacturers for precise details
of systems, thicknesses and types of insulation required.
Fire performance
Crown Loft Roll 44 is classified as Euroclass A1 to EN
13501-1.
Advantages
- System manufacturer tested solution
- Up to 4 hours fire protection