Measure and mark where you want your U channel
Marl along wall with level as ceiling may not be level
Screw-fix 'U' channel
at 600 mm centres maximum, and ensure that fixings are selected
which are appropriate for the substrate eg drill and plug solid
Suspension rods and
adjustable channel hangers
Select fixing grid spacing suited to the ceiling loading (for one
layer of 12.5mm Knauf Wallboard use maximum 450mm centres)
Mark out positions of channels and fix the Universal Brackets to
the soffit at spacing required (1400mm centres for one layer of
12.5mm Knauf Wallboard).
Bend both legs of the Universal Brackets 90 degrees downwards ready
for location of the C-Channels.
Offer up 'C' channels and locate into perimeter 'U' channel and
in between legs of the Universal Brackets.
Joints in support
If joints are necessary in straight lengths of support 'C' channel,
use Knauf 'C' Channel Connectors.
Create movement control joints where ceiling runs exceed 10m.
Movement control joints should coincide where possible with movement
joints in the surrounding structure.
Levelling the support
framework and fixing the ceiling
Level all supporting framework and screw fix both legs of the Universal
Brackets with Waferhead Jackpoint screws.
Install the ceiling by screw fixing Knauf plasterboard to the support
channels at maximum 230mm centres and 150 mm centres at the ceiling