CasoLine MF

6.2
Concealed grid MF suspended ceiling system

INTRODUCTION CasoLine MF conforms to :

BS 1230: Part 1: 1985 Specification for plasterboard
CasoLine MF concealed grid MF suspended ceiling system excluding materials submitted to secondary operations.
is a monolithic suspended ceiling system suitable for most BBA Certificate No. 90/2541: Glasroc Multi-Board (Glasroc
internal dry lining applications. It is used in all types of MultiBoard).
commercial and industrial buildings, including institutional BS EN 10142: 1991 Specification for continuously hot-dip
use areas such as schools and hospitals. zinc coated low carbon steel sheet and strip for cold
forming: technical delivery conditions.
The system comprises a concealed metal framework BS EN 10143: 1993 Specification for continuously hot-dip
suspended from the structural soffit using strap hangers or metal coated steel sheet and strip.
angle section. Gypframe Acoustic Hangers can be used to
suspend the grid from timber joists to maximise the degree
of acoustic isolation. Gyproc or Arteco boards are screw-
fixed to the framework to form a ceiling lining with a
seamless surface.

CasoLine MF provides a robust suspended ceiling able to

accept a degree of loading. The plenum is used to route
ducting and other services and can be accessed by
providing Gyproc Profilex access panels. Ventilation
openings and other services can also be accommodated.
Curved ceilings can be easily achieved using preformed
Gypframe MF7 support components.

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Health and Safety COMPONENTS

Safety Data Sheets for all Gypsum Industries products
are available to download from our website Gyproc and Arteco Gyptone boards
www.gypsum.ie, or via our Technical Sales Department.
Table 1 Dimensions
Environmental
CasoLine MF is unsuitable for use in areas subject to Type of board Thickness Width
mm mm
continuously damp or humid conditions.
....................................................................................................................
Gyproc WallBoard1 12.5, 15 900, 1200
Plasterboards are not suitable for use in temperatures Gyproc SoundBloc 12.5, 15 1200
above 49C but can be subjected to freezing conditions Gyproc FireLine1 12.5, 15 1200
without risk of damage. Gyproc MultiBoard 6, 10, 12.5 1200
Arteco Gyptone boards
LINE 6 12.5 1200
CasoLine MF ceilings lined with Gyproc or Arteco boards are
QUATTRO 46 12.5 1200
suitable for use under normal occupancy conditions.
QUATTRO 47 12.5 1200
Buildings in which they are used should be dry, glazed and QUATTRO 41 12.5 1200
enclosed, with environmental conditions of no greater than Curve LINE 7 6.5 900
70% RH at 10 - 20C. For high humidity / high moisture ....................................................................................................................
1 also available in Duplex grades where vapour control is required
conditions use Gyproc Moisture Resistant or Gyproc
MultiBoard.
Arteco Rigitone boards
For areas other than where perforated Gyptone and
Rigitone boards are specified, Duplex grade board or two Table 2 Dimensions
coats of Gyproc Drywall Sealer applied to the face of the
Type of board Thickness Length Width
lining will provide water vapour control.
mm mm mm
....................................................................................................................
8/18 12.5 1998 1188
10/23 12.5 2001 1196
15/30 12.5 2010 1200
12-20/66 12.5 1980 1188
8-15/20 12.5 2000 1200
8-15/20 SUPER 12.5 1960 1200
....................................................................................................................

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

COMPONENTS (contd) Gyproc Profilex access panels for access to the plenum
for maintenance purposes.
Gypframe metal sections
Gyproc Drywall Screws for fixing plasterboards.
MF5 Ceiling Section - main support section
Prime dimensions 80mm x 26mm Gypframe Wafer Head Drywall Screws for metal to
Gauge 0.5mm, length 3600mm metal fixing.
Note: consider using Wafer Head Gyproc Jack-Point Screws
MF6A Perimeter Channel - perimeter support for MF8 to MF7 connection.
for MF5s
Prime dimensions 20mm x 27mm x 30mm Gyproc Sealant if required, sealing airpaths for optimum
Gauge 0.5mm, length 3600mm sound insulation.

MF7 Primary Support Channel - primary support Moy Plus providing acoustic/thermal insulation.
for MF5s
Gyproc jointing materials for seamless jointing.
Prime dimensions 15mm x 45mm
Gauge 0.9mm, length 3600mm Rigitone installation tool for installation of Rigitone
boards.
MF8 Strap Hanger - suspension of ceiling grid
Prime dimension 25mm Rigitone Vario 60 for jointing of Rigitone boards.
Gauge 0.55mm, length 25m (coil)
or
Rigitone jointing kit for seamless jointing of Rigitone
GA1 Steel Angle
boards.
Prime dimensions 25mm x 25mm
Gauge 0.55mm, length 2900mm
or Thistle GypPrime for controlling suction on Rigitone
GAH1 Acoustic Hanger Length 35mm board edges.
GAH2 Acoustic Hanger Length 70mm
Gyproc Skimcoat, Carlite Finish or Gyproc Board
MF9 Connecting Clip - fixing MF5s to MF7 Finish providing a plaster finish.
Gauge 2.65mm

MF11 Nut and Bolt - joining hanger to

soffit cleat

MF12 Soffit Cleat - suspension point from

structural soffit
Prime dimensions 27mm x 37mm x 25mm
Gauge 1.6mm

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

PERFORMANCE

Refer to section 6.1 Introduction, for general considerations. In the following tables the fire resistance and sound
insulation performances are based on imperforate constructions using boards with all joints taped and filled according to
Gypsum Industries recommendations. Moy insulation may be laid over the back of the ceiling grid, and does not detract
from the fire performance of the floors. The quoted performances are achieved only if Gypsum Industries components are
used throughout, and the Companys fixing recommendations are strictly observed.

Table 3 Dimensions, weights, and performance

Fire protection to steel beams1 supporting concrete floors

Ceiling boards Approx. MF5 MF7 Fire Performance

weight support support resistance2 substantiation
centres centres report
kg/m2 mm mm mins
..............................................................................................................................................................................................................................................
Two layers of 12.5mm Gyproc WallBoard 21 450 1200 30 C100013
..........................................................................................................................................................................................................
One layer of 12.5mm Gyproc FireLine 14 450 1200 60 C100014

One layer of 12.5mm Gyproc MultiBoard 12 600 1200 60 G100036

..........................................................................................................................................................................................................
Two layers of 10mm Gyproc MultiBoard 20 400 1200 120 G100038

Two layers of 15mm Gyproc FireLine 28 450 900 120 C100015

..............................................................................................................................................................................................................................................
1 Concrete floors as described in BS 476: Part 23: 1987. The steel beams subjected to test had a section factor A/V (Hp/A) of 205m-1 calculated on
the basis of three sided profiled exposure. The suspended ceiling will also provide adequate protection to steel beams with a lower section
factor. For beams with a higher section factor, contact the Technical Sales Department for guidance.
2 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to section 2.2
for full details.

Table 4 Dimensions, weights, and performance

Fire protection - timber floor construction

Ceiling boards Approx. Floor MF5 MF7 Fire Performance

weight type1 support support resistance2 substantiation
centres centres report
kg/m2 mm mm mins
..............................................................................................................................................................................................................................................
One layer of 12.5mm Gyproc FireLine 14 a 450 1200 30 C106001

Two layers of 12.5mm Gyproc WallBoard 21 a 450 1200 30 C106002

.........................................................................................................................................................................................................
One layer of 12.5mm Gyproc MultiBoard 12 b 400 1200 60 G106034

Two layers of 12.5mm Gyproc FireLine 24 a 450 1200 60 C106003

.........................................................................................................................................................................................................
Two layers of 15mm Gyproc FireLine 28 a 450 900 90 C106004

Three layers of 10mm Gyproc MultiBoard 30 c 450 1200 120 G106035

..............................................................................................................................................................................................................................................
1 Floor types

a Timber joist floors incorporating any structurally suitable wood board flooring on timber joists not less than 38mm wide at
600mm centres.
b 21mm minimum t & g wood board flooring on timber joists not less than 44mm wide at 600mm centres.
c 21mm minimum t & g wood board flooring on timber joists not less than 38mm wide at 600mm centres.
2 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to section 2.2
for full details.

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Concealed grid MF suspended ceiling system

Table 5 Dimensions, weights, and performance

Fire protection to floor or roof cavity above suspended ceiling1

Ceiling boards Approx. Insulation Fire resistance2 Performance

weight integrity : insulation substantiation
kg/m2 minutes report
..............................................................................................................................................................................................................................................
Two layers of 22 100mm Moy 30 : 30 C106045
12.5mm Gyproc WallBoard Plus Roll
laid over grid

.......................................................................................................................................................................................................

Two layers of 28 30mm rock mineral wool 60 : 60 C106051

15mm Gyproc FireLine slab (45 kg/m3) laid over grid

..............................................................................................................................................................................................................................................
1 Normal fixing centres for Gypframe MF5s and MF7s (450 and 1200mm respectively).
2 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to section
for full details.

Table 6 Dimensions, weights, and performance

Upgrading of the sound insulation of concrete floors1

1 2

CasoLine MF ceiling2 CasoLine MF ceiling2

hung underneath basic floor hung underneath basic floor
to give 240mm cavity to give 240mm cavity, with 80mm
Moy Plus Roll in cavity

Detail Ceiling boards Approx. Floor Laboratory sound insulation Performance

weight depth (100 - 3150Hz) substantiation
Airborne Impact report
kg/m2 mm Rw dB LnW dB
..............................................................................................................................................................................................................................................
1 One layer of 12.5mm Gyproc WallBoard 12 363 56 68 C100016

1 Two layers of 12.5mm Gyproc WallBoard 22 376 58 66 C100017

2 One layer of 12.5mm Gyproc SoundBloc 13 363 61 60 C100018

2 Two layers of 12.5mm Gyproc SoundBloc 24 376 64 57 C100019

..............................................................................................................................................................................................................................................
1 Basic floor construction is lightweight concrete joist floor with concrete infill panel (surface density of infill is 90kg/m3) and total depth
150mm. sound insulation is Rw 35dB (airborne) and LnW 91dB (impact).
2 Normal fixing centres for Gypframe MF5s and MF7s (450 and 1200mm respectively).

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Table 7 Dimensions, weights, and performance

Sound insulation to timber floors1

Basic floor New floating floor

1 2

195mm x 45mm timber joists at CasoLine MF ceiling hung

600mm centres with 18mm t and g underneath 195mm x 45mm
wood chipboard flooring and timber joists at 600mm centres
basic ceiling3. to give a 277mm cavity.
80mm Moy Plus Roll laid
on ceiling boards.
Floating floor 2.
Upgrading
3 4 5 6

CasoLine MF ceiling CasoLine MF ceiling CasoLine MF ceiling CasoLine MF ceiling

hung underneath basic floor hung underneath basic floor hung underneath basic floor hung underneath basic floor
to give 150mm cavity. (ceiling removed) to (ceiling removed) with a (ceiling removed) using
80mm Moy Plus Roll give 277mm cavity. layer of Gyproc Plank fixed to Gypframe Acoustic Hangers
laid on ceiling boards. 80mm Moy Plus Roll the underside of the chipboard to give a 277mm cavity.
laid on ceiling boards. to give a 258mm cavity. 80mm Moy Plus Roll
80mm Moy Plus Roll laid on ceiling boards.
laid on ceiling boards.

Detail Ceiling boards3 Approx. Floor Laboratory sound insulation Performance

weight depth (100 - 3150Hz) substantiation
Airborne Impact report
kg/m2 mm Rw dB LnW dB
..............................................................................................................................................................................................................................................
1 One layer of 12.5mm Gyproc Plasterboard 11 226 38 79 C106028

3 One layer of 12.5mm Gyproc SoundBloc 13 389 58 66 C106005

3 Two layers of 12.5mm Gyproc SoundBloc 24 402 61 60 C106006

4 Two layers of 15mm Gyproc FireLine 28 325 59 61 C106004

4 Two layers of 12.5mm Gyproc SoundBloc 24 320 60 60 C106007

4 Two layers of 12.5mm Gyproc FireLine 24 320 59 61 C106003

5 One layer of 12.5mm Gyproc SoundBloc 13 307 59 62 C106008

4 Two layers of 15mm Gyproc SoundBloc 28 325 60 60 C106014

5 Two layers of 12.5mm Gyproc SoundBloc 24 320 63 57 C106009

6 Two layers of 12.5mm Gyproc SoundBloc 24 320 63 54 C106013

2 Two layers of 12.5mm Gyproc SoundBloc 24 376 66 50 C106011

..............................................................................................................................................................................................................................................
1 Normal fixing centres for MF5s and MF7s (450 and 1200mm respectively). Suspension method is strap hangers or angle section unless
otherwise stated.
2 18mm t & g wood chipboard spot bonded to Gyproc Plank on Moy Sound Deadening Floor Slabs laid on 12mm plywood.
3 If the basic ceiling comprises of lath & plaster it should be supported by chicken wire, securely nailed to the joists.

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Table 8 Sound insulation of composite constructions

GypWall / CasoLine MF ceiling

Suspended ceiling construction

Double layer Single layer Double layer Single layer

12.5mm Gyproc 12.5mm Gyproc 12.5mm Gyproc 12.5mm Gyproc
SoundBloc. SoundBloc. SoundBloc. SoundBloc.
80mm Moy Plus 80mm Moy Plus
Roll on back. Roll on back.

Partition construction Weighted standardised level difference (DnTw)

and performance substantiation report number.
..............................................................................................................................................................................................................................................
146mm Gypframe metal studs at 600mm centres. 51 50 50 48
25mm Moy Acoustic Roll in cavity. C10J001 C10J002 C10J003 C10J004
One layer of Gyproc Plank and one layer of
12.5mm Gyproc SoundBloc each side.

146mm Gypframe metal studs at 600mm centres. 49 48 48 45

25mm Moy Acoustic Roll in cavity. C10J005 C10J006 C10J007 C10J008
Two layers of 12.5mm Gyproc SoundBloc each side.

70mm Gypframe metal studs at 600mm centres. 45 45 44 45

25mm Moy Acoustic Roll in cavity. C10J009 C10J010 C10J011 C10J012
Two layers of 12.5mm Gyproc SoundBloc each side.
..............................................................................................................................................................................................................................................
Refer to section 3.2 GypWall for partition performance data based on laboratory tests.

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Table 9 Sound absorption data for Arteco Gyptone boards3 tested on a 400mm Plenum

LINE 6 1.00 Gyptone LINE 6

0.80
Practical abs. coeff p

Gyptone LINE 6 plus 100mm Moy TS48

0.60

0.40 Practical absorption coefficient p

0.20 125 250 500 1k 2k 4k w AC2 NRC
.....................................................................................................................
0.00
125 250 500 1k 2k 4k
frequency Hz 0.70 0.65 0.60 0.50 0.40 0.35 0.45(L) D 0.55

0.70 0.70 0.65 0.65 0.50 0.45 0.55(L) D 0.65

PSR No.1 C10A001 & C10A002
.....................................................................................................................

QUATTRO 46 1.00 Gyptone QUATTRO 46

0.80
Practical abs. coeff p

Gyptone QUATTRO 46 plus 100mm Moy TS48

0.60

0.40 Practical absorption coefficient p

0.20 125 250 500 1k 2k 4k w AC2 NRC
.....................................................................................................................
0.00
125 250 500 1k 2k 4k
frequency Hz 0.65 0.60 0.55 0.45 0.40 0.35 0.45(L) D 0.50

0.60 0.60 0.65 0.55 0.45 0.40 0.50(L) D 0.55

PSR No.1 C10A014 & C10A015
.....................................................................................................................

QUATTRO 47 1.00 Gyptone QUATTRO 47

0.80
Practical abs. coeff p

Gyptone QUATTRO 47 plus 100mm Moy TS48

0.60

0.40 Practical absorption coefficient p

0.20 125 250 500 1k 2k 4k w AC2 NRC
.....................................................................................................................
0.00
125 250 500 1k 2k 4k
frequency Hz 0.45 0.50 0.45 0.40 0.30 0.25 0.35(L) D 0.40

0.50 0.55 0.50 0.40 0.30 0.30 0.40(L) D 0.45

PSR No.1 C10A016 & C10A017
.....................................................................................................................

Curve LINE 7 1.00 Gyptone CURVE LINE 7

0.80
Practical abs. coeff p

Gyptone CURVE LINE 7 plus 100mm Moy TS48

0.60

0.40 Practical absorption coefficient p

0.20 125 250 500 1k 2k 4k w AC2 NRC
.....................................................................................................................
0.00
125 250 500 1k 2k 4k
frequency Hz 0.70 0.65 0.60 0.50 0.40 0.35 0.45(L) D 0.55

0.70 0.70 0.65 0.65 0.50 0.45 0.55(L) D 0.65

PSR No.1 C10A018 & C10A019
.....................................................................................................................

QUATTRO 41 Gyptone QUATTRO 41

1.00

0.80
Practical abs. coeff p

Practical absorption coefficient p

0.60 125 250 500 1k 2k 4k w AC2 NRC
0.40 .....................................................................................................................
0.20
0.50 0.70 0.80 0.70 0.60 0.55 0.65(L) C 0.70
0.00 .....................................................................................................................
125 250 500 1k 2k 4k
frequency Hz

PSR No.1 C10A091

1 Performance Substantiation Report number.

2 Absorption Class
3 For further details contact the Technical Sales Department.

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Table 10 Sound absorption data for Arteco Rigitone boards3

8/18 1.0
Rigitone 8/18 (Plenum depth 200mm plus 75mm Moy TS48)
Practical absorption Coeff p

0.8
Rigitone 8/18 (Plenum depth 50mm)
0.6

0.4 Rigitone 8/18 (Plenum depth 200mm)

0.2
Practical absorption coefficient p
0.0
125 250 500 1k 2k 4k
125 250 500 1k 2k 4k w AC2 NRC
frequency Hz
.................................................................................................................

PSR No.1 C10A036, C10A037 & C10A060 0.60 0.95 0.95 0.80 0.70 0.50 0.70(LM) C 0.85

0.10 0.30 0.65 0.85 0.55 0.30 0.50(M) D 0.55

0.35 0.75 0.90 0.60 0.50 0.40 0.55(LM) D 0.70

.................................................................................................................

10/23 1.0
Rigitone 10/23 (Plenum depth 200mm plus 75mm Moy TS48)
Practical absorption Coeff p

0.8
Rigitone 10/23 (Plenum depth 50mm)
0.6

0.4 Rigitone 10/23 (Plenum depth 200mm)

0.2
Practical absorption coefficient p
0.0 125 250 500 1k 2k 4k w AC2 NRC
125 250 500 1k 2k 4k
.................................................................................................................
frequency Hz

0.65 0.95 0.90 0.80 0.65 0.45 0.65(LM) C 0.85

PSR No.1 C10A038, C10A039 & C10A061
0.10 0.25 0.65 0.90 0.55 0.25 0.45(M) D 0.60

0.35 0.70 0.85 0.60 0.50 0.35 0.50(LM) D 0.65

.................................................................................................................

15/30 1.0
Rigitone 15/30 (Plenum depth 200mm plus 75mm Moy TS48)
Practical absorption Coeff p

0.8
Rigitone 15/30 (Plenum depth 50mm)
0.6

0.4 Rigitone 15/30 (Plenum depth 200mm)

0.2
Practical absorption coefficient p
0.0 125 250 500 1k 2k 4k w AC2 NRC
125 250 500 1k 2k 4k
.................................................................................................................
frequency Hz

0.60 0.95 1.00 0.85 0.70 0.55 0.70(LM) C 0.85

PSR No.1 C10A058, C10A059 & C10A069

0.10 0.25 0.60 0.85 0.55 0.30 0.45(LM) D 0.55

0.35 0.70 0.85 0.60 0.50 0.35 0.50(LM) D 0.65

.................................................................................................................

1 Performance Substantiation Report number.

2 Absorption Class
3 For further details contact the Technical Sales Department.

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Table 10 (contd)3

12-20/66 1.0 Rigitone 12-20/66 (Plenum depth 200mm plus 75mm Isowool TS48)
Practical absorption Coeff p

0.8
Rigitone 12-20/66 (Plenum depth 50mm)
0.6

0.4 Rigitone 12-20/66 (Plenum depth 200mm)

0.2
Practical absorption coefficient p
0.0 125 250 500 1k 2k 4k w AC2 NRC
125 250 500 1k 2k 4k ..............................................................................................................................
frequency Hz

0.55 0.95 1.00 0.85 0.70 0.55 0.70(LM) C 0.90

PSR No.1 C10A042, C10A043 & C10A063

0.10 0.25 0.60 0.85 0.55 0.30 0.45(M) D 0.55

0.40 0.70 0.85 0.60 0.50 0.35 0.50(LM) D 0.65

..............................................................................................................................

8-15-20 1.0 Rigitone 8-15-20 (Plenum depth 200mm plus 75mm Isowool TS48)
Practical absorption Coeff p

0.8
Rigitone 8-15-20 (Plenum depth 50mm)
0.6

0.4 Rigitone 8-15-20 (Plenum depth 200mm)

0.2
Practical absorption coefficient p
0.0
125 250 500 1k 2k 4k
125 250 500 1k 2k 4k w AC2 NRC
..............................................................................................................................
frequency Hz

0.55 0.70 0.65 0.50 0.30 0.20 0.35(LM) D 0.55

PSR No.1 C10A056, C10A057 & C10A068

0.10 0.40 0.65 0.55 0.25 0.10 0.25(LM) E 0.45

0.40 0.70 0.65 0.40 0.25 0.15 0.30(LM) D 0.50

..............................................................................................................................

8-15-20 SUPER 1.0 Rigitone 8-15-20 SUPER (Plenum depth 200mm plus 75mm Isowool TS48)
Practical absorption Coeff p

0.8
Rigitone 8-15-20 SUPER (Plenum depth 50mm)
0.6

0.4 Rigitone 8-15-20 SUPER (Plenum depth 200mm)

0.2
Practical absorption coefficient p
0.0 125 250 500 1k 2k 4k w AC2 NRC
125 250 500 1k 2k 4k
..............................................................................................................................
frequency Hz

0.60 0.85 0.80 0.65 0.45 0.30 0.45(LM) D 0.70

PSR No.1 C10A058, C10A059 & C10A069

0.15 0.40 0.70 0.75 0.45 0.40 0.50(M) D 0.55

0.35 0.75 0.75 0.55 0.40 0.30 0.45(LM) D 0.60

..............................................................................................................................

1 Performance Substantiation Report number.

2 Absorption Class
3 For further details contact the Technical Sales Department.

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Fire protection Thermal properties

Plasterboard is designated a material of limited Moy Isover insulation can be laid over the suspension grid
combustibility within national Building Regulations. to provide the required standard of thermal insulation.
The plasterboard surfaces and the exposed surface of
Arteco Gyptone and Rigitone boards achieve a Class 0 DESIGN
rating. Refer to section 6.1 Introduction, for general considerations.
Gyproc MultiBoard is non-combustible when tested to Cavity barriers
BS 476: Part 4: 1970 (1984). Where cavity barriers are required, these can be formed
Fire resistance using Gyproc FireLine (limited combustability) or Gyproc
The fire resistances given in Tables 3 to 5 are for MultiBoard (non-combustible) screw-fixed to a simple metal
imperforate ceilings tested to BS 476: Part 8: 1972, or or timber frame. The framing should be fixed to the
BS 476: Parts 21 and 22: 1987, or Part 23: 1987, or structure to avoid undue loading of the ceiling suspension
assessments based on these tests. grid or, alternatively, additional hangers should be
incorporated to support the ceiling alongside the cavity
Sound insulation barrier. Refer to section 6.7 Cavity barriers.
The airborne and impact sound ratings given in Tables 6
and 7 are for imperforate ceilings and have been tested in Ceiling lift
accordance with BS EN ISO 140-3: 1995, and rated in The Designer should give consideration to designing in a
accordance with BS EN ISO 717-1: 1997. The tests on pressure relief to minimise the risk of ceiling lift in rooms
ceiling/partition combinations in Table 8 were treated as with no permanent ventilation. This situation arises where
site tests. opening a door in a virtually leak proof room causes the
lightest element in the room, i.e. normally the ceiling, to
Airtightness is essential for optimum sound insulation.
lift, creating a noise. Whilst this may be annoying to the
While most junctions will be sealed with standard jointing
occupier, it has no detrimental effect on the performance
materials, gaps at the perimeter of the floor and ceiling,
claimed for the ceiling, but designing out by incorporating
and other small airpaths, can be sealed using Gyproc
permanent ventilation in the room would be desirable.
Sealant. The sound insulation data quoted was measured in
Vents in the door or ceiling would be suitable.
the absence of flanking transmission. The performance of
the floor in practice will generally be governed by flanking
Suspension Gyproc and Gyptone linings
transmission.
Fixing points for suspending the metal grid are required at
Arteco Gyptone and Rigitone boards are perforated and 1200mm centres in each direction. Suitable fixing devices,
are designed to provide acoustic correction. Where sound e.g. Rawl Hammer In Fixing, should be employed when
insulation room to room is required, sound attenuation fixing to the structure. These should be non-combustible,
(Dncw) of 39dB can be achieved with the inclusion of 100mm e.g. Rawl Rawlok Sleeve Anchor, when the ceiling is
Moy Plus Roll over the back of the ceiling. Alternatively, required to provide fire protection. The ceiling grid can be
other design considerations should be adopted such as suspended from a concrete soffit using Gypframe MF12
extending adjoining partitions into the plenum void or Soffit Cleats and Gypframe MF8 Strap Hanger, or alternatively,
installing a plenum barrier. Gypframe GA1 Steel Angle. The latter provides a more
robust suspension support which restricts any flexing of the
Sound absorption lining when pressure is applied from below. Gypframe GA1
Arteco Gyptone and Rigitone boards provide sound Steel Angle is thus the preferred suspension option when a
absorption when used in conjunction with an air space plaster finish is specified to Gyproc boards.
behind the ceiling. Tests have been carried out to BS EN
20354: 1993 and ISO 354: 1985. Increased levels of sound If Gypframe GA1 Steel Angle is used it can, if preferred, be
absorption can be achieved by including insulation over the fixed directly to the soffit rather than via MF12 Soffit Cleats.
back of the ceiling. The single figure rating practical sound The angle is cut and bent to fit as shown in Fig 10. For
absorption coefficients w and absorption class shown in single layer boarding, where GA1 Steel Angle is fixed direct,
Tables 9 and 10 are calculated and rated in accordance with the MF7 Primary Support Channel and GA1 Steel Angles are
EN ISO 11654: 1997. The Noise Reduction Coefficient (NRC) fixed at 1200mm centres. For typical double layer ceilings
figures are calculated in accordance with ASTM C423- 90a: the GA1 Steel Angles are fixed at max. 1200mm centres,
1992. but the MF7s are closed down to 900mm max. centres.

Water vapour control Gypframe Acoustic Hangers can be used to suspend the
Where there is a requirement for a vapour control layer, grid from timber joists to maximise the degree of acoustic
Duplex grade boards should be specified as the face layer isolation (see Fig 12). In a comparative test a 3dB
(i.e. the second layer in double layer linings). The improvement in airborne sound insulation and a 6dB
application of two coats of Gyproc Drywall Sealer to the improvement in impact sound insulation were achieved.
face lining will also provide vapour control. Refer to Table 7, Constructions 4 and 6 , relating to
double layer Gyproc SoundBloc linings.

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 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

With concrete floors the high mass of the construction Imposed loads
means that high levels of acoustic performance can be Tables 11, 12 and 13 provide loading data for the
achieved when the CasoLine MF ceiling is suspended by suspension grid for Gyproc, Arteco Gyptone and Arteco
conventional means i.e. strap hangers or angle section. Rigitone boards respectively, based on a limiting deflection
factor of L/400.
Suspension Rigitone linings
The Gypframe MF7 Primary Support Channels are fixed at Table 11 Maximum recommended loads on
1000mm centres. Suspension points to the structure for the CasoLine MF grid1 with Gyproc linings
MF7s are required at 900mm centres. Suitable Rawl fixing
devices should be employed when fixing to the structure. Suspension point MF7 Maximum load including
The ceiling grid can be suspended from a concrete soffit centres channel weight of board and insulation*
using Gypframe MF12 Soffit Cleats and Gypframe MF8 centres
Strap Hanger, or alternatively, Gypframe GA1 Steel Angle. mm mm kg/m2
....................................................................................................................
Suspension of CasoLine MF from engineered I joists
1200 1200 30
Please contact the joist manufacturer for advice.
1200 900 40
1200 600 60
Partition to suspended ceiling junction
900 1200 35
Tests on lightweight constructions have revealed the
....................................................................................................................
following: 1 MF5 Ceiling Sections spaced at 450mm centres (maximum).

1. In situations where a GypWall metal stud partition,

which must be securely fixed to the structure, penetrates Table 12 Maximum recommended loads on
CasoLine MF, the structural performance of the partition CasoLine MF grid with Arteco Gyptone linings
can be based on the floor to suspended ceiling height
irrespective of the construction. Therefore, lightweight Suspension MF7 Maximum load including
partitions which are required for space division in tall point channel board and any insulation.*
storey heights will be significantly strengthened by the centres centres MF5s at 600mm centres
mm mm kg/m2
ceiling system. Where CasoLine MF is installed on one side
....................................................................................................................
of the partition, only a slight loss of flexural strength will
1200 1200 25
occur when any loading is applied on the ceiling side of the
1200 900 35
partition. 1200 600 55
....................................................................................................................
2. The structural performance of a GypWall metal stud
partition fixed to the framework of a CasoLine MF ceiling,
Table 13 Maximum recommended loads on
or to noggings cut from Gypframe MF5 Ceiling Section set
CasoLine MF grid with Arteco Rigitone linings
at 600mm centres, is equal to the performance of a metal
stud partition of the same height fixed direct to the
Suspension MF7 Maximum load including
structural soffit.
point channel board and any insulation.*
centres centres MF5s at nominal 330mm centres
mm mm kg/m2
....................................................................................................................
900 1000 30
....................................................................................................................
* Maximum loads should be reduced by 25% if Gypframe
GA1 Steel Angles are fixed directly to the soffit.

Services
The plenum can be used to route all service requirements
including ducting, pipework, electrical cables and conduit.
Where lighting fittings, Gyproc Profilex access panels and
similar components are incorporated as part of the design
requirements, consideration must be given to maintaining
the integrity of the ceiling to meet fire resistance and
sound insulation requirements. Where Gyproc access panels
are required they can be installed as shown in Fig 4.
Refer to section 8.4 - Gyproc Profilex Access Panels.

The installation of services should be in accordance with all

available standards, guidelines and recommendations.

June 2005 15
 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Fixtures / Fixings Finishing

Fixings to the system should always be made into the metal Refer to section 1.5 Finishing Coat Plasters, section 2.2
grid or to supplementary framing. Some adjustment of the Jointing, and section 2.4 Decorative effects.
primary grid may be required to support particularly heavy
loads, see Tables 11, 12 and 13. Where loads outside this Additional care and attention should be exercised when
range are anticipated, independent suspension should be jointing Arteco Gyptone and Rigitone boards so as not to
provided from the structure. fill the perforations and impair the acoustic performance of
the finished ceiling.
Control joints
Gyproc Control Joints may be required in the ceiling to Estimating Gyproc / Arteco Gyptone linings
relieve stresses induced by expansion and contraction of the The estimated construction time is 1.5m2 / man hour (single
structure. The location of the control joints is at the layer ceiling) or 1m2 / hour (double layer ceiling) ready for
discretion of the specifier. It is recommended that they finishing.
coincide with movement joints within the surrounding
structure. Estimating Arteco Rigitone linings
The estimated construction time is 0.75m2 / man hour ready
Rigitone expansion joints for decoration.
Rigitone boards should be cut 10mm short of the perimeter
wall and should not be fixed to the perimeter channel, see
Figs 7 and 8. Expansion joints should be included in the
ceiling, one 10mm expansion joint should be included every
10m of ceiling in each direction, and where there is an
expansion joint within the surrounding structure.

CONSTRUCTION DETAILS

Fig 1 Typical layout for plasterboard

1200mm

150mm
maximum 1200mm
centres

230mm
maximum
centres

450mm

16 June 2005
 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

CONSTRUCTION DETAILS CONTD

Fig 2 Typical layout for Arteco Gyptone board (LINE 6 2400 x 1200mm board illustrated)

1200mm

1200mm

600mm

Fig 3 Typical layout for Arteco Rigitone board

1000mm max. 1000mm 1000mm

See Fig 7 A A
nom
330

900mm
nom
330
nom
330
nom
330

900mm
nom
330

B
nom
330
max.
150

See Fig 8 B

June 2005 17
 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Fig 4 Gyproc Profilex access panel installation

Fig 5 Perimeter arrangement Gypframe MF5 Fig 6 Perimeter arrangement Gypframe MF7
Ceiling Section Primary Support Channel

Fig 7 Perimeter arrangement Rigitone boards Fig 8 Perimeter arrangement Rigitone boards

1000mm
max.

Section BB of Figure 3.

Section AA of Figure 3.
150mm

18 June 2005
 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

Fig 9 Clip fixing of Gypframe MF5 Ceiling Section.

Note: Please refer to DESIGN: Imposed loads on p15.

Fig 10 Pre-forming Gypframe GA1 Steel Angle for Fig 11 Bulkhead

direct fixing to the structure. Note: Please refer to
Tables 11 to 13.

Fig 13 Change of level

Fig 12 Suspension from timber joists using

Gypframe Acoustic Hangers

M6
nut/bolt/washers
(by others)

Gypframe Acoustic
35mm

Hanger

MF12
MF11
MF8
MF7
MF9

MF5

June 2005 19
 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

INSTALLATION

General 9. Form the secondary grid by running

It is important to observe appropriate Gypframe MF5 Ceiling Sections at right
Health and Safety legislation when angles to the underside of the primary
working on site, i.e. protective grid at 450mm centres. Connect MF5
clothing and equipment, etc. The to MF7 using Gypframe MF9
following notes and associated Connecting Clips, engaging into MF6A
photographs are intended as general Perimeter Channel at the perimeter.
guidance only, depicting the basic
sequence of installation. In practice,
consideration must be given to design
criteria requiring specific project
solutions. Contact the Technical Sales
Department for guidance.
6. Alternatively, Gypframe GA1 Steel
Angle can be cut, bent and drilled to
CasoLine MF should be installed in
accordance with all available facilitate direct fixing to the structure
legislation, standards, guidelines and (see Fig 10). Please note limitations
regulations. see DESIGN.
7. Begin to form the primary grid by
Suspension from concrete soffit fixing the first MF7 Primary Support
Typical installation for Gyproc Channel. Rest one end on the top
10. Use a cut piece of MF7 (or similar)
Boards flange of the perimeter channel and
to facilitate engagement of
1. Determine the required ceiling fix MF7 to hangers (two fixings per
the second leg of the clip. Do not
level and mark the position of hanger) using Gypframe Wafer Head
squeeze the MF5 so the section
Gypframe MF6A Perimeter Channel Jack-Point Screws.
distorts.
on the walls. 8. Extend MF7 Primary Support
2. Fix MF6A at 600mm centres, using Channels by overlapping back-to-back
appropriate fixings. by 150mm minimum and fix together
3. Mark fixing points of Gypframe using two Gypframe Wafer Head
MF12 Soffit Cleats to the structure at Jack-Point Screws.
1200mm centres (to form a 1200mm x
1200mm grid). Secure each cleat using
an appropriate fixing.
4. Pre-cut Gypframe MF8 Strap Hangers
or Gypframe GA1 Steel Angle section
to the approximate depth of suspension
required. Pre-punch or pre-drill to
facilitate fixing to soffit cleat.
5. Locate each strap hanger or angle
section against a soffit cleat and fix
using Gypframe MF11 Nut and Bolt.

20 June 2005
 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

11. Extend MF5 Ceiling Sections by Fixtures Suspension from timber soffit
overlapping by 150mm minimum and 14. Install any additional channel, The procedure is as for concrete,
crimp or screw-fix twice through each close down suspension centres or except that cleats are not required.
flange. install supplementary framing, as Fix hangers directly to the side of joists
12. Ensure that joins do not occur at required, to support fixtures and using two Gyproc Drywall Timber
the intersection of MF5 and MF7 fittings. Screws inserted into the top third of
sections, otherwise engagement of the joist. Gypframe Acoustic Hangers,
the MF9 Connecting Clip will be Fixing Gyproc boards fixed with suitable wood screws, may
impaired. 15. Fix boards to MF5 Ceiling Sections be specified to maximise the degree of
13. Install further MF5 Ceiling with long edges at right angles to the acoustic isolation (see Fig 12.)
Sections to complete the grid. MF5s using Gyproc Drywall Screws.
Lightly butt board ends and stagger For advice on fixing to engineered I
end joints. joists please contact the joist
16. Insert screws at 230mm maximum manufacturer.
centres in the field of boards and
150mm maximum centres at board
ends.
17. For double layer linings stagger
board joints in the second layer
relative to the first.

Fixing Arteco Gyptone boards

18. Position MF5 Ceiling Section at
600mm centres (300mm for
Curve LINE 7) to coincide with the
unperforated areas.
19. Install fixings at 230mm centres.
Gyptone board joints are normally
in-line i.e. not staggered (see Fig 2).
This aids the filling and finishing of
board joints.
20. In high humidity applications
reduce MF5 fixing centres from
600mm to 400mm.

Note: Select the appropriate length

of fixing to provide a nominal 10mm
penetration into the steel framing.

June 2005 21
 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

INSTALLATION ARTECO RIGITONE LININGS

Installation of Arteco Rigitone boards 6. Lightly sand the front edge of the
1. Determine the required ceiling paper liner to remove any paper burrs 9. All boards should be fixed using
level and mark the position of from the boards before fixing. Apply 25mm Gyproc Drywall Screws at
Gypframe MF6a Perimeter Channel on Thistle GypPrime (diluted 4 parts maximum 150mm centres at board
the walls. water to 1 part GypPrime) to all of the perimeters and 230mm centres in the
board edges with a brush or sponge. field of the board. Screw fix the board
2. Fix MF6a at 600mm centres using The primer should be allowed to dry perimeter prior to fixing the field of
appropriate fixings. Note: For Arteco for 24 hours before the jointing of the the board.
Rigitone boards:- Fix MF6A Perimeter system is carried out. No fixings should be made into MF6A
Channels through 25 x 25mm timber Perimeter Channels. Outermost
battens (see Figs 7 and 8), forming a fixings in line with MF5 ceiling section
10mm shadow gap detail around the should be a maximum of 150mm from
perimeter of the ceiling. perimeter (see Fig 8). Outermost
fixings perpendicular to MF5 ceiling
3. The Gypframe MF7 Primary Support
sections should be a maximum of
Channels are installed at 1000mm
15mm from edge of MF6A Perimeter
centres. A fixing point should be
Channel.
provided at 900mm centres along
MF7. Gypframe MF5 Ceiling Sections 10. Mix the Arteco Rigitone Vario 60
are at nominal 330mm centres. The filler with clean water (approximately
first MF5 should be a maximum 3 parts water to 1 part filler) and fill a
150mm from the perimeter wall. cartridge with the mixture. Insert the
7. The fixing of Rigitone boards should bung and screw the nozzle onto the
4. The framework should be assembled
always start at the centre of the room end of the cartridge. Apply the filler
and adjusted in such a way that the
and work outwards. The position of to the joints ensuring the joint is
Rigitone perforated boards are fixed
the first board should be measured completely full. Failure to fully fill the
to MF5 ceiling sections with long
and marked with a chalkline. joint can cause the joint to crack.
edges at right angles to the framing,
Once the cartridge is empty the bung
using Gyproc Drywall Screws. The 8. Lift the boards into position and use should be removed for reuse using the
Rigitone boards should be fixed in line the Rigitone installation tool to correctly tool supplied.
i.e. no staggered joints, and there space them (see image below). When
should always be an MF5 Ceiling fixing, the boards should be
Section at the end joints of the boards positioned so that the perforation
(see Fig 3). pattern is aligned in all directions.

5. While planning the layout it should

be considered that the longitudinal
joints run parallel to the incidence of
light in the room.

22 June 2005
 CasoLine MF
6.2
Concealed grid MF suspended ceiling system

INSTALLATION ARTECO RIGITONE LININGS

11. The filler should be left to dry for a Once the joint has been filled remove
minimum of 50 minutes before the paper tape immediately. Lightly
striking the excess material away from sand once dry.
the joint.

The board should be primed ready for

12. Allow all the joints to dry for a decoration in accordance with
minimum of 24 hours before finishing. section 2.2 - Jointing.
Mask the perforations either side of
the joints using wet paper tape. 14. The boards should be painted
using a roller applied finish, the
perforated boards should not be spray
painted, as this will impair the acoustic
performance.

13. Fill the joints and screw heads, let

the material project slightly from the
boards to allow for shrinkage and
sanding.

June 2005 23