ceilings
COMPONENTS
ACOUSTIC CEILING SYSTEM MF/2FP
Acoustic Suspended Ceiling System designed for use with timber floors.
Perimeter Channel
Length – 3,600mm
Floor
Joist
Ceiling Channel
Length – 3,600mm
Primary
Support Channel
Length – 3,600mm
Angle Section
Length – 3,000mm
MF Ceiling
Framework
Plasterboard
The InstaCoustic MF/2FP suspended ceiling system incorporates acoustic hangers to
isolate the framework from the structural soffit. This dramatically improves the
airborne performance of the ceiling ensuring the best possible reduction of sound.
Increased performance can be delivered by introducing the optional IN10 acoustic
insulation quilt to the void created by the ceiling system.
Note: Improved acoustic performance is achieved if the joist void is enclosed with one
layer of 12.5mm plasterboard before fitting the MF/2FP acoustic ceiling.
Connecting Clip
Metal washer
Acoustic Hangers
Length – 70mm (Supplied with grommet)
Acoustic Hanger
Acoustic
Sealant
Perimeter
Channel
Optional
Acoustic Insulation
Clips
Primary
Support
Channel
Ceiling Channel
Angle Section
Tel: 0118 973 9560 Fax: 0118 973 9547
Email: sales@instacoustic.co.uk
www.instacoustic.co.uk
Insta House, Ivanhoe Road
Hogwood Business Park, Finchampstead
Wokingham, Berks RG40 4PZ
E.7
ceilings
INSTALLATION INSTRUCTIONS FOR
ACOUSTIC CEILING SYSTEM MF/2FP
Step 1
Fix the perimeter channels at the required height taking into account the
number of layers of plasterboard. Fixings should be made at 50mm from
the end of the channel and from then on at 600mm centres. Ensure that
the perimeter channel is positioned so that the top face corresponds to
the underside of the primary support channel (Diagram 2).
Optional foam isolation strip
Perimeter Channel
Ceiling Channel
As installation continues, the ceiling channel should be inserted into
the perimeter channel and fixed in position with wafer head screws
(Diagram 1).
Plasterboard
Diagram 1
Step 2
Acoustic Hanger
Primary Support Channel
Diagram 2
Fix the acoustic hangers to the structural soffit using suitable fixings,
taking note of the appropriate suspension centres for the loading
being applied to the ceiling (See Table 1). It is critical that the metal
washer is fitted between the screw head and the rubber grommet.
The acoustic hangers can be fixed directly to the primary support
channel or you can choose to include the angle section between the
acoustic hanger and the primary channel (Diagram 3) to increase the
depth of void. The acoustic hanger/angle section should be fixed to
the primary support channel with wafer head screws.
Step 3
Rubber
grommet
Fix the primary support channel in accordance with the centres detailed in the loading
Table 1. The acoustic hangers should be fixed to the primary support channel with two
wafer head screws (Diagram 2). The underside of the primary support channel
should align with the top of the perimeter channel (Diagram 2). The
primary support channel does not need to be fixed to the perimeter
Fixing
channel but they should be tightly butted together. If the support
channels need to be jointed, position the channels back to back
with a min of 150mm overlap and fix with two wafer head screws.
Primary Support
Channel
Angle
Section
Fixing
Diagram 3
Rubber
grommet
Angle Section
Acoustic
Hanger
Metal washer
Clips
Step 4
Diagram 4
E.8
Systems MF/2FP : Issue No. 2
Ceiling Channel
Fix the ceiling channels so that they are positioned within the
perimeter channel (Diagram 1). They must also align with the
position of the edges of plasterboard. Please make sure that the
centres match the size of board being applied to the ceiling.
The ceiling channels are fixed by means of the connecting clips
(Diagram 4).
We reserve the right to change the specification without prior notice.
ceilings
INSTALLATION INSTRUCTIONS FOR
ACOUSTIC CEILING SYSTEM MF/2FP
Step 5
When all the primary support channels and ceiling channels are
installed insert insulation if necessary above the primary support
channel. It is important to make sure that the insulation is installed
across the total area of the ceiling leaving no gaps.
1200mm
Primary Support
Channel
Diagram 5
1200mm
Optional Insulation
Ceiling
Channel
300mm
Step 6
Two staggered layers of
Plasterboard or Fireline Board
screwed at 230mm ceiling channel
450mm
Acoustic
Hangers
300mm
Offer the plasterboard up to the ceiling channels and
fix the boards making sure that the face of the
boards is facing outwards and secure with dry wall
screws at 230mm centres. When fixing the corners
of the boards reduce centres to 150mm (Diagram 6).
Make sure that all joints are staggered and that all
the boards are tightly butted together.
Diagram 6
Table 1
Maximum Recommended Load for MF/2FP Ceiling System.
Ceiling channels at 450mm centres
If acoustic hangers are not
required then the angle
section can be spliced as
shown in Diagram 7. This will
enable the angle sections to
be fixed directly into the
concrete soffit.
Diagram 7
Acoustic
Hangers
Centres mm
Primary Support
Channel
Centres mm
Maximum Load
Including weight
of board kg/m2
1200
1200
30
1200
900
40
1200
600
60
900
1200
35
NOTE: Acoustic hanger centres, please note that the
first and last fixing from perimeter walls should be no
more than 300mm.
When fixing the framework of the ceiling into the
timber joists make sure that a suitable fixing is used
with adequate penetration into the joists to carry the
load of the ceiling.
E.9