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630359_5
An insulating hearth
conforming to the size requirements in
the following table must be installed unless the floor is made
entirely from a non-combustible material. The hearth must be
constructed from 40mm skamo enclosure board and finished
in a suitable non-combustible material (stone, ceramic tile,
brick etc.).
Cavity placement against combustible materials
Wherever the fireplace is placed against a combustible or
heat sensitive wall or material a double layer (2 x 40mm
sheets) of skamo enclosure board shall be used as a heat
barrier. If space constraints allow it is good practice to also
build in an air gap (40mm) between the skamo enclosure
board and the combustible wall / material. The air gap should
be “vented” top and bottom to allow for “cooling air”
circulation. The vent holes must NOT be open to or take air
from the fireplace cavity as this area becomes very hot during
use. The potential to transfer hot air from within the cavity into
the “air gap” should be avoided under all circumstances.
Wherever there are joins between the double layer sheets of
skamo enclosure board they should be “staggered” or “offset”
by at least 150mm. Steel flashings have been provided to help
ensure air tightness of the joints at the top of the cavity. These
should be placed at seams and attached with 2x30mm
diamond point nails.
Wherever a double layer of skamo enclosure board
is used
the corner details should be “staggered” or “offset” as in the
following diagram to minimise the likelihood of a heat leak
path.
Steel Flashings
Figure 19
Figure 20
Figure 21
Summary of Contents for Varia 2L 80h-P7
Page 5: ...5 630359_5 2 0 PRODUCT DIMENSIONS 2 1 2 2 Figure 1 Figure 2 ...
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Page 23: ...23 630359_5 Corner L R Varia 2L 2R 80h P7 Double Sided Varia A FDh P8 Figure 23 Figure 24 ...
Page 26: ...26 630359_5 3 7 EXAMPLE OF CAVITY CONSTRUCTION Figure 30 Figure 31 ...
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Page 52: ...52 630359_5 Data Plate Installer Adhere duplicate data plate here ...