Fire Rated HighWalls

Fire rated high walls (Non-load bearing) consist of Two layers of 12mm thick Hilux Calcium Silicate boards, screw fixed to 1mm thick G.I. cold rolled Boxed studs and channels to achieve 10000 mm height. 50mm thick x 64kg/m³ density,Rockwool is placed in the cavity to get Two hour fire resistance.

System Thickness 198 mm
Fire Resistance Two Hours
Sound Insulation 52 dB
Maximum Height 10000 mm


Frame work and board fixing is done as described in double layer partition chapter.

Jointing and Finishing:

Hilux board joints of outer layer are filled and finished with specially formulated Jointing compound and 48mm wide self-adhesive fiber mesh tape to get seamless finish.


Rockwool 50 mm thick and 64 kg/m³ density is placed in the cavity after completing board fixing on one side of the partition.



Hilux Board 2440 x 1220 mm
8/10/12 mm Thick
Two boards on
each side of Studs
Hilux Floor /
Ceiling Channel
148 x 32 x 32 x 1.0 mm Top and bottom perimeter
of the partition
Boxed Stud 146 x 50 x 48 x 1.0 mm Vertically at 610 mm c/c
Bracing member 45 x 15 x 15 x 0.9 mm Fixed horizontally
at 915 mm c/c
Hilux Screws
(Phillips head)
25 and 35 mm long,
self-drilling with
under head cutter
12 mm from the edge and
40 mm from the corner of
the board at 200 mm c/c
Insulation Rock Wool -
50 mm x 64 kg/m³
Placed in the cavity