ROCKFON System Mono®Acoustic

ROCKFON System Mono®Acoustic
Installation guide
ROCKFON System Mono® Acoustic
ROCKFON System Mono® Acoustic – Installation Guide
Contents
Introduction
System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Job site conditions during installation . . . . . . . . . . . . . . . 3
ROCKFON System Mono® Acoustic components
Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ROCKFON System Mono Acoustic panels . . . . . . . . . . . . 5
Fastening washers and screws . . . . . . . . . . . . . . . . . . . . . . . 5
Mono intersection bracket . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Tape and Mono Filler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ROCKFON System Mono Ready-Mix . . . . . . . . . . . . . . . . . 5
ROCKFON System Mono Acoustic
inspection hatches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ROCKFON System Mono Acoustic Flecto . . . . . . . . . . . . . 6
System installation
Grid installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chicago Metallic Monolithic (1200x600). . . . . . . . . . . . . . 8
Chicago Metallic Monolithic (1200x900). . . . . . . . . . . . . . 9
Assembly of panels (1200x1200) . . . . . . . . . . . . . . . . . . . 10
Assembly of panels (1800x1200) . . . . . . . . . . . . . . . . . . . 11
Assembly of panels (1800x1200) . . . . . . . . . . . . . . . . . . . 12
Assembly of panels (900x1200) . . . . . . . . . . . . . . . . . . . . 13
Tape and filler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Joint check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Sanding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Perimeter finish and site masking . . . . . . . . . . . . . . . . . . 17
Render . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-19
Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2
Introduction
Recommendations
+
System overview
The use of a fan convector unit,
ventilator and dehumidifier is
recommended if the natural
conditions of the site do not
allow suitable temperatures and
humidity levels. The use of these
devices allows the drying time to be
significantly reduced.
Description
Mono Acoustic is an aesthetically pleasing seamless ceiling offering excellent sound absorption
properties (up to αw = 1,00, Class A). ROCKFON offers three different ROCKFON System Mono
Acoustic ceiling panels for different installation purposes;
• ROCKFON System Mono Acoustic
• ROCKFON System Mono Acoustic Direct
• ROCKFON System Mono Acoustic Flecto
ROCKFON System Mono Acoustic is meant for installation on a grid (suspended mounting) and
has an αw = 0,90. ROCKFON System Mono Acoustic Direct is meant only for installation directly
underneath an existing ceiling or against the soffit and has an αw = 1,00. ROCKFON System Mono
Acoustic Flecto is developed for vaulted installation of Mono and has an αw = 0,90 (similar to our
standard ROCKFON System Mono Acoustic panels).
Once installed, all the components form a seamless ceiling, requiring neither paint nor any additional
structural elements.
With the exception of the fastening screws, all products are made specifically for the Mono Acoustic
system. Installers must use only the items described herein.
–
However, ROCKFON advises against
using a hot air blower that is too
powerful, produces excessive heat
or that could result in too fast
drying, as this may cause cracking.
This type of device may only be
used within a safe distance from the
Mono Acoustic ceiling as the goal
is to heat the air rather than the
ceiling directly.
The installation must be completed in accordance with the Mono Acoustic system installation guide.
To conserve fire- and acoustical properties of the ROCKFON System Mono Acoustic ceiling, ROCKFON
recommends that the installation is done by a certified Mono installer.
Installation order
1. Installing the Chicago Metallic Monolithic grid system
2. Installing Mono Acoustic panels
3. Filling the joints with ROCKFON System Mono Acoustic Tape and Mono Filler
4. Sanding of joints
5. Protective masking of the room: walls, floors as well as furniture
6. Spraying the Mono Ready-Mix render
Technical data
Suspension depth
Module size
Module thickness
Minimum suspension depth
900x1200
1200x1200
1800x1200
40mm
40mm with direct installation
90mm with 50mm plenum
System weight per m
2
Panel
Direct installation
Installation on a grid system
(200mm plenum)
6,0 kg
7,5 kg
8,5 kg
System load-bearing capacity
Maximum evenly-distributed load capacity
Maximum point load capacity
2,0 kg/m2
1,5 kg
When the system is installed to bear load, ROCKFON recommends to fix the panel with two screws
in the middle instead of one (<1,5 kg point load) or with twoscrews + profile reinforcement
(>1,5 kg point load or >2 kg/m2 evenly distributed load).
Job site conditions during installation
Temperature and humidity
A Mono Acoustic ceiling must be installed in a closed and covered location. The air temperature
in the location must be at least 15°C and the relative humidity must be between 40% and 60%.
Non-compliance with these conditions significantly prolongs drying time.
Handling
For an optimised work environment, we recommend installers always observe common work
practices and follow the installation advise as shown on our packaging.
Planning
Mono Acoustic is a finished ceiling. No paint or other treatment should be added after spraying the
Mono Ready-Mix. It is important to avoid producing dust during and after the installation of the
ceiling. The monolithic nature of the ceiling means it is non-demountable, so careful sequencing of
the construction work is essential along with the installation of hatches if access is required.
Incident light
It is recommended to avoid incident/side light on suspended ceilings. Extreme floodlight might
cause visible joints.
3
Attention
!
In swimming pools ROCKFON
advises to install the system in the
following way;
The grid and suspension system
used should be corrosion resistant.
The ventilation in the swimming
pool and the plenum should be
optimal to avoid condensation
issues. ROCKFON recommends to
install the ROCKFON System Mono
Acoustic not completely against the
wall but to leave an opening so that
the air can circulate in the room/
plenum. ROCKFON recommends
to create a similar climate
(temperature and humidity) in the
room and plenum.
The ceiling should be at a certain
height in order to overcome water
splashing against the ceiling
(this might lead to spots on the
ROCKFON System Mono Acoustic
surface).
For usage of ROCKFON System
Mono Acoustic in a swimming pool,
please contact your local ROCKFON
technical support for more
information.
ROCKFON System Mono® Acoustic components
Grid
The grid system ROCKFON recommends is the Chicago Metallic Monolithic grid. Additional
alternative grid systems may be appropriate. Consult with ROCKFON to discuss suitability.
Chicago Metallic Monolithic grid
Prohibited
–
Regardless of the type of grid
chosen, ROCKFON prohibits the use
of any wire, quick hanger or other
hanger that does not guarantee
against up-lift.
This grid system has a T-shaped main runner and
an omega-shaped cross tee, typically known as
“furring channel”, with a 35mm wide table. The
main runner is available with a slot distance of
200mm and 225mm.
Recommendations
+
To avoid uplift, ROCKFON
recommends the use of
rigid hangers.
+
A perimeter trim installed around
the room will enhance the stability
and rigidity of the ceiling.
+
To fix the omega-shaped cross tee
in the perimeter trim ROCKFON
recommends the use of the
following clip ref. no. AX087X500P.
4
ROCKFON System Mono® Acoustic components
ROCKFON System Mono Acoustic panels
ROCKFON System Mono Acoustic panels are made from
high-density stone wool. They are finished with a white fleece
on the visible side and an anti-ageing, high performance
membrane on the reverse. ROCKFON System Mono Acoustic
panels have tapered edges on all four sides which allows for
optimum jointing.
Prohibited
–
With the exception of the
standard 55mm long screws, all
other accessories are specially developed to guarantee a
perfect aesthetic and acoustic
result with the Mono Acoustic
panel. ROCKFON prohibits the
use of accessories other than
those sold for that purpose.
ROCKFON System Mono Acoustic Direct panels are made
from high-density stone wool and are also finished with a
white fleece on the visible side. The reverse is not provided
with an anti-ageing, high performance membrane since the
panel is mounted directly to the soffit. This panel may under
no circumstances be used for suspended solutions!
ROCKFON System Mono Acoustic Flecto panels are made of
high-density stone wool. They are finished with a white fleece
on the visible side and an anti-ageing, high performance
membrane on the reverse. The panel has tapered edges on all
four sides for optimal jointing and the backside has grooves
to allow for vaulted installation.
Fastening washers and screws
Combined with standard screws (55mm) positioned every
300mm, ROCKFON System Mono Acoustic Washers allow for
the installation of panels to the Chicago Metallic Monolithic
grid on the perimeter and in the middle of the tiles. The
fastening washers increase the bearing surface of the screw
head. Their specially designed bowl shape allows the screw
heads to be recessed into the panel.
Attention
!
The joint filler and render must
be stored at a temperature
above 0°C. If kept in their
original unopened packaging,
they have a shelf life of 18 months.
ROCKFON ROCKFON System
Mono Acoustic Flecto panels
should be handled with extra
care. Due to the grooves in
the backside the tiles are more
difficult to handle than standard
ROCKFON System Mono
Acoustic panels.
Mono intersection bracket
The Mono intersection bracket allows for the installation
of panels to the Chicago Metallic Monolithic grid at the
intersection of ROCKFON System Mono Acoustic panels. It is
designed in such a way that it can be pushed into the panel
(four small teeth), providing that the installer has its hands
free to fix the bracket.
Question
Tape and Mono Filler
The 40mm wide tape and ready-mixed Mono Filler are
specially designed to ensure strong, optimal joints between
the ROCKFON System Mono Acoustic panels. Each tape roll is
150m, and the filler is packaged in a 20 kg tub.
ROCKFON System Mono Ready-Mix
(white or colour)
Manufactured in white as standard, Mono Ready-Mix (render)
can also be supplied in colours upon request. In this case, a
colour reference (e.g. NCS code, RAL code) should be sent
to ROCKFON and a sample of the requested colour will
be created. The manufacturing time for a colour sample is
around 10 working days. The colour finish render is subject to
a minimum quantity of 20 kg.
The render is packaged in 20 kg tubs.
?
Are colour finishes available?
Yes!
1. Send ROCKFON your
required colour reference
(NCS code or RAL code).
2. ROCKFON produces and
sends colour samples.
3. After validation, ROCKFON
produces the colour render
with a minimum quantity
of 20 kg.
System components and brute consumption guide per m²
Mono Acoustic
panels in module
1800x1200mm
0,46
Round washer
(250 pcs/box)
0,46 pcs
(excl. perimeter
fixation)
Mono
intersection
Mono Ready-Mix - low
Mono Ready-Mix
bracket
Mono Acoustic Tape Fast-drying ready-mix pressure application
- high pressure
(150 pcs/box)
R40//150
Mono Filler (20 kg/tub)
(20 kg/tub)
application (20 kg/tub)
4,17 pcs
1,4 lm
1,00 - 1,20 kg
* In critical light conditions or depending on the co lours, higher consumption may be required.
** For colour render it is recommend to prime the joints with mono primer.
Please note that the quantity of accessories, tape and Mono Filler required depends on the panel module size.
5
White 1,0-1,2 kg *
Colour 1,2-1,4 kg *
White 1,2-1,4 kg *
Colour 1,3-1,5 kg *
ROCKFON System Mono® Acoustic components
ROCKFON System Mono Acoustic inspection hatches
To provide access towards the plenum ROCKFON has developed three standard inspection
hatches.
Two sizes of square hatches made out of an
aluminum frame with an integrated ROCKFON
System Mono Acoustic panel, which can be
sprayed with ROCKFON System Mono ReadyMix render to create a similar surface as the rest
of the seamless ceiling.
And one round white pre-coated metal hatch
which can be installed either over sprayed with
ROCKFON System Mono Ready-Mix render or
used in its original state without over spraying.
Dimensions square hatches:
400x400mm
600x600mm
Dimension round hatch:
Ø700mm
Consult with your local technical support in
order to get more information about our ROCKFON System Mono Acoustic inspection hatches.
Details of the ROCKFON System Mono Acoustic
inspection hatches can be found in the ROCKFON System Mono Acoustic solution library.
This hatch requires a void space of 10cm. For opening, lift the total hatch 5cm and slide it (above the grid) a few centimeters to the side, then
rotate the opposite side of the hatch downwards.
This hatch requires no void space. For opening, lift the total hatch 1cm and rotate.
ROCKFON System Mono Acoustic Flecto
ROCKFON System Mono Acoustic Flecto
ceiling panels allow for installation to concave
or convex surfaces with a radius of 1500mm
minimum.
A ROCKFON System Mono Acoustic Flecto
ceiling should be fitted to a curved solid
structure.
The “shell” serves as a support for the fastening
screws and the ROCKFON System Mono
Acoustic Flecto panels.
6
ROCKFON does not recommend using timber
panels for supporting structures or shells.
Examples and details of the ROCKFON System
Mono Acoustic Flecto can be found in the
ROCKFON System Mono Acoustic solution
library.
System installation
Grid installation
Tools required
• Metre rule
• Laser level
• Worksite light
Recommendations
• Utility knife
• Drill
• Scaffolding
+
• Pencil
• Power screwdriver
• Scissors
Installation guideline
The installer must consider the dimensions of the room, the presence of service elements to be
integrated (lights, air-conditioning, etc.) and arrange the ceiling so there are no whole panels against
the walls.
For grid installation, ROCKFON
recommends the use of suitable
scaffolding and additional lighting
apparatus under all circumstances.
+
ROCKFON also recommends the
use of a laser level to guarantee
optimum results.
Regardless of the grid system, the installer should always install a perimeter trim. This component
should be fastened to all vertical junctions with the ceiling such as walls, partitions, columns,
upstands, etc. A perimeter trim installed around the room enhances the stability and rigidity of
the ceiling.
Regardless of the grid system, the installer should always suspend the grid using rigid hangers
(threaded rods, nonius hangers, fixed brackets, metal fixing clips, metal angle, etc.) for stability and
rigidity. ROCKFON prohibits the use of any wire or other hanger that does not provide stability and
rigidity.
All fitting elements involving a space reservation in the ceiling, such as ventilation grating, lighting
apparatus or an access hatch, need a crosshead. To install the crosshead, the installer should choose
the profile most appropriate to the situation: Omega-shaped cross tee,T35 main runner or the
C-shaped wall angle.
7
Caution
!!
The ROCKFON System Mono
Acoustic system can maximally bear
the direct load of service elements
(HVAC, Lighting, etc.) as described
on page 3 of this installation guide.
System installation
Chicago Metallic Monolithic system in 1200x600mm.
Recommendations
Tile dimensions 1800x1200mm and 1200x1200mm.
+
Suspente rigide
Hangers
Perimeter trim
Coulisse de rive
Cross
tee T 40
Entretoise
During and after grid installation, it
is recommended that the flatness
and the level of the grid be checked.
In a 1200x600mm installation, it
is recommended that the angles
between the main runners and
cross tees also be checked for
squareness. This can be easily done
by comparing the measurements of
the two diagonals.
Concrete soffit
Support plafond
Check
!
The maximum surface flatness
tolerance is 2mm over one metre
and 5mm over five metres. This
tolerance is valid for all directions.
Main runner
Porteur T 40
Caution
• T35 main runners with slot distance 200mm main runners positioned at 1200mm centres
!
• Omega cross tees installed every 600mm between main runners
When used for large dimension
ceilings, ROCKFON System Mono
Acoustic ceilings must be installed
with a movement joint. The
maximum surface area between
these joints is limited to 300m2, and
the largest dimension must not
exceed 25m1. Movement joints in a
ROCKFON System Mono Acoustic
ceiling must coincide with the
Movement joints in the building.
• Perimeter trims fixed to the vertical surfaces (walls, columns, etc.) every 400mm
• Hangers installed every 1200mm along the main runners
F
A
A
G
C
E
D
B
D
D
Distance overview
(mm)
A
Hanger distance
1200
B
Main runner distance
1200
C
Max. distance to the first main runner
400
D
Distance between cross tees
600
E
Max. distance to the first cross tee
400
F
Max. distance to the first hanger
400
G
Distance between fixing points perimeter trim
400
8
System installation
Chicago Metallic Monolithic system in 1200x900mm.
Recommendations
Tile dimensions 1800x1200mm and 1200x900mm.
+
Suspente rigide
Hangers
Perimeter trim
Coulisse de rive
Cross
tee T 40
Entretoise
During and after grid installation, it
is recommended that the flatness
and the level of the grid be checked.
In a 1200x900mm installation, it
is recommended that the angles
between the main runners and
cross tees also be checked for
squareness. This can be easily done
by comparing the measurements of
the two diagonals.
Concrete soffit
Support plafond
Check
!
The maximum surface flatness
tolerance is 2mm over one metre
and 5mm over five metres. This
tolerance is valid for all directions.
Main runner
Porteur T 40
Caution
• T35 main runners with slot distance 200mm main runners positioned at 1200mm centres
!
• Omega cross tees installed every 900mm between main runners
When used for large dimension
ceilings, ROCKFON System Mono
Acoustic ceilings must be installed
with a movement joint. The
maximum surface area between
these joints is limited to 300m2, and
the largest dimension must not
exceed 25m1. Movement joints in a
ROCKFON System Mono Acoustic
ceiling must coincide with the
Movement joints in the building.
• Perimeter trims fixed to the vertical surfaces (walls, columns, etc.) every 400mm
• Hangers installed every 1200mm along the main runners
F
A
A
G
C
E
D
B
D
D
Distance overview
(mm)
A
Hanger distance
1200
B
Main runner distance
1200
C
Max. distance to the first main runner
400
D
Distance between cross tees
900
E
Max. distance to the first cross tee
400
F
Max. distance to the first hanger
400
G
Distance between fixing points perimeter trim
400
9
System installation
Assembly of panels 1200x1200mm
Installation Guide
• Each Mono Acoustic panel is fastened with a plasterboard screw (length 55mm) combined with
a Mono Acoustic washer or a ROCKFON System Mono Acoustic intersection bracket.
• The round washers are used for fixation of the panels at the centre and at the perimeter trim. The
spacing between the round washers is 300mm.
• The Mono intersection brackets are fastened on the intersection of panels. The spacing between
the Mono intersection brackets is 300mm (along the main runner) and 400mm (along the cross
tees) as shown in the drawing below.
• Minimum one round washer connection should be placed at the centre of each panel. If the
system is bearing load, according to the maximum capacities as displayed on page 3 of this
guide, ROCKFON recommends to place two round washers at the centre of the panel (400mm
distance between the washers).
Cutting and fastening at perimeters
• The edge cuts must be no more than 2mm shorter than the actual dimension in order to
guarantee optimum perimeter finish.
• The fastening of panels is done with the round washers with a maximum spacing as described
above.
300
custom
x
300
300
Check
!
During and after installation of the
panels, it is recommended that the
surface level and flatness of the
ceiling be checked. The maximum
tolerance is 2mm over one metre
and 5mm over five metres. This
tolerance is valid for all directions.
Caution
!!
If an edge cut is too long, the
installer will have to force the panel
in, which can result in damage to
the fleece. Conversely, if an edge cut
is too short it can leave a gap that is
too large to guarantee an optimum
and quick finish during installation
of the acrylic filler.
300
custom x 1200
custom
custom x 1200
300
1200 x 1200
300
600
600
300
1200 x 1200
!!
When installing the fasteners,
it is recommended that they be
controlled. If they are screwed in
too deep, the panels will deform
resulting in surface flatness
problems and excess use of filler
and reduction in sound absorption
properties.
custom
x
1200
300
Recommendations
+
1200 x 1200
ROCKFON recommends a staggered
installation of the panels.
400
400
400
+
An aligned installation of the panels
is possible.
: Washer
: Mono Intersection Bracket
10
System installation
Assembly of panels 1800x1200mm
Installation Guide
• Each Mono Acoustic panel is fastened with a plasterboard screw (length 55mm) combined with
a Mono Acoustic washer or a ROCKFON System Mono Acoustic intersection bracket.
• The round washers are used for fixation of the panels at the centre and at the perimeter trim. The
spacing between the round washers is 300mm.
• The Mono intersection brackets are fastened on the intersection of panels. The spacing between
the Mono intersection brackets is 300mm (along the main runner) and 400mm (along the cross
tees) as shown in the drawing below.
• Two round washers should be placed at the centre of each panel. If the system is bearing
load, according to the maximum capacities as displayed on page 3 of this guide, ROCKFON
recommends to place extra round washers at the centre of the panel (400mm distance between
the washers).
Cutting and fastening at perimeters
• The edge cuts must be no more than 2mm shorter than the actual dimension in order to
guarantee optimum perimeter finish.
• The fastening of panels is done with the round washers with a maximum spacing as described
above.
300
custom
x
300
300
Check
!
During and after installation of the
panels, it is recommended that the
surface level and flatness of the
ceiling be checked. The maximum
tolerance is 2mm over one metre
and 5mm over five metres. This
tolerance is valid for all directions.
Caution
!!
If an edge cut is too long, the
installer will have to force the panel
in, which can result in damage to
the fleece. Conversely, if an edge cut
is too short it can leave a gap that is
too large to guarantee an optimum
and quick finish during installation
of the acrylic filler.
300
custom x 1200
custom
custom x 1200
300
300
600
600
400
400
400
custom
300
!!
When installing the fasteners,
it is recommended that they be
controlled. If they are screwed in
too deep, the panels will deform
resulting in surface flatness
problems and excess use of filler
and reduction in sound absorption
properties.
300
x
1800
1200 x 1800
Recommendations
1200 x 1800
+
ROCKFON recommends a staggered
installation of the panels.
+
An aligned installation of the panels
is possible.
: Washer
: Mono Intersection Bracket
11
System installation
Assembly of panels 1800x1200mm
Installation Guide
• Each Mono Acoustic panel is fastened with a plasterboard screw (length 55mm) combined with
a Mono Acoustic washer or a ROCKFON System Mono Acoustic intersection bracket.
• The round washers are used for fixation of the panels at the centre and at the perimeter trim. The
spacing between the round washers is 300mm.
• The Mono intersection brackets are fastened on the intersection of panels. The spacing between
the Mono intersection brackets is 300mm (along the main runner) and 400mm (along the cross
tees) as shown in the drawing below.
• Minimum one round washer connection should be placed at the centre of each panel. If the
system is bearing load, according to the maximum capacities as displayed on page 3 of this
guide, ROCKFON recommends to place two round washers at the centre of the panel (400mm
distance between the washers).
custom
x
300
300
!
During and after installation of the
panels, it is recommended that the
surface level and flatness of the
ceiling be checked. The maximum
tolerance is 2mm over one metre
and 5mm over five metres. This
tolerance is valid for all directions.
Caution
Cutting and fastening at perimeters
• The edge cuts must be no more than 2mm shorter than the actual dimension in order
to guarantee optimum perimeter finish.
• The fastening of panels is done with the round washers with a maximum spacing as
described above.
300
Check
!!
If an edge cut is too long, the
installer will have to force the panel
in, which can result in damage to
the fleece. Conversely, if an edge cut
is too short it can leave a gap that is
too large to guarantee an optimum
and quick finish during installation
of the acrylic filler.
300
custom x 1200
custom
custom x 1200
300
300
600
600
custom
300
400
x
1800
1200 x 1800
400
400
300
!!
When installing the fasteners,
it is recommended that they be
controlled. If they are screwed in
too deep, the panels will deform
resulting in surface flatness
problems and excess use of filler
and reduction in sound absorption
properties.
Recommendations
+
1200 x 1800
ROCKFON recommends a staggered
installation of the panels.
+
An aligned installation of the panels
is possible.
: Washer
: Mono Intersection Bracket
12
System installation
Assembly of panels 900x1200mm
Installation Guide
• Each Mono Acoustic panel is fastened with a plasterboard screw (length 55mm) combined with
a Mono Acoustic washer or a ROCKFON System Mono Acoustic intersection bracket.
• The round washers are used for fixation of the panels at the centre and at the perimeter trim. The
spacing between the round washers is 300mm.
• The Mono intersection brackets are fastened on the intersection of panels. The spacing between
the Mono intersection brackets is 225mm (along the main runner) and 400mm (along the cross
tees) as shown in the drawing below.
• Minimum one round washer connection should be placed at the centre of each panel. If the
system is bearing load, according to the maximum capacities as displayed on page 3 of this
guide, ROCKFON recommends to place extra round washers at the centre of the panel (400mm
distance between the washers).
custom
x
300
300
!
During and after installation of the
panels, it is recommended that the
surface level and flatness of the
ceiling be checked. The maximum
tolerance is 2mm over one metre
and 5mm over five metres. This
tolerance is valid for all directions.
Caution
Cutting and fastening at perimeters
• The edge cuts must be no more than 2mm shorter than the actual dimension in order
to guarantee optimum perimeter finish.
• The fastening of panels is done with the round washers with a maximum spacing as
described above.
300
Check
!!
If an edge cut is too long, the
installer will have to force the panel
in, which can result in damage to
the fleece. Conversely, if an edge cut
is too short it can leave a gap that is
too large to guarantee an optimum
and quick finish during installation
of the acrylic filler.
300
custom x 1200
custom
225
custom x 1200
900 x 1200
225
225
600
600
900 x 1200
!!
When installing the fasteners,
it is recommended that they be
controlled. If they are screwed in
too deep, the panels will deform
resulting in surface flatness
problems and excess use of filler
and reduction in sound absorption
properties.
225
custom
x
900
Recommendations
900 x 1200
+
ROCKFON recommends a staggered
installation of the panels.
400
400
400
+
An aligned installation of the panels
is possible.
: Washer
: Mono Intersection Bracket
13
System installation
Tape and filler
Tools required
• Soft finishing knife (150mm)
• Soft finishing knife (240mm)
• Scaffolding
Recommendations
• Mixer
• Ventilator
• Site light
• Rotating blades for mixing filler
• Dehumidifier (optional)
• Fan convector unit (optional)
+
For the finishing phase, ROCKFON
recommends the use of suitable
scaffolding and additional lighting
apparatus in all circumstances.
A scaffolding platform adjusted to
the correct height and appropriate
lighting will be more comfortable
for the installer and result in faster,
quality installation of the joints.
Affixing the tape and applying the first coat of filler
+
ROCKFON recommends mixing the
Mono Filler before use. This ensures
homogenity and achieves a better
slide off the finishing knife.
1. Lay the filler on the joints
2. W
hile the filler is still wet, position the tape on
the joints
Check
!
Keep the specific design/layout
of the project in mind when
calculating the amount to be used.
!
3. Load the thinned edge with filler
4. O
nce the first coat dries*, apply a second coat
of filler to all joints and fasteners to guarantee
good overall evenness
Consumption
The filler will cover approximately 1,0 kg/m². The maximum width of the filler is 200mm.
Attention: this usage amount is theoretical. It is calculated for a flat ceiling and does not take into
account the specific layout of the worksite.
The presence of downstands, light troughs, floating edges (island zone) or an unusual room shape
may result in additional consumption. For example, the treatment of a plasterboard bulkhead
connected to a Mono Acoustic ceiling using reinforced tape leads to additional consumption of the
joint finish by approximately 1,0 kg per linear metre of level change.
*Drying time
The drying time depends on the conditions of the site.
For the first coat, the general drying time is between 10 and 16 hours.
For the second coat, the general drying time is between 6 and 10 hours.
During this phase, it is
recommended that the amount of
filler applied is carefully checked
to guarantee evenness of the joint
after drying.
Attention
!
The second coat of filler can only
be done when the first coat is
completely dry. Non-compliance
with this will result in serious
defects in the quality of the joint.
Caution
!!
Tape that is not properly stuck
or pressed into the joint can result
in serious joint quality defects.
14
System installation
Joint check
1. Light up the area to check:
Position a high-power lamp in front of
the ceiling area to be checked.
Attention
!
A clean 350mm finishing knife and
a high-power lamp are required
in order to adequately check the
quality of the joints.
2. Position the finishing knife:
It must be a perfectly clean 350mm
knife, and should be placed vertically
under the sanded joints.
Check
- Negative result:
The presence of a beam of light will
indicate a lack of quality on the joint.
This will need to be rectified in order
to attain the quality expected of a
Mono Acoustic joint.
!
In order to check the quality of a
joint, a knife must be used to show
surface level and flatness defects
or bumps. Follow the checking
instructions shown opposite.
Question
- Positive result:
The absence of a beam of light
indicates perfect evenness of the joint.
It is ready to be sanded.
15
?
I s it possible to correct a joint defect if
the ceiling is finished?
YES! It is always possible to correct
it but the work is more difficult. It is
much easier to correct a joint before
spraying the finishing coat.
System installation
Sanding
Tools required
• Protective mask
• Scaffolding
• Site light
Recommendations
• Sanding block (120x70mm)
• Sanding handle (230x110mm)
• Long-neck sander with rigid flat surface
• Safety goggles
• Sandpaper (80 and 100 grain)
• Connected vacuuming system
+
For the sanding phase, ROCKFON
recommends the use of suitable
scaffolding and additional lighting
apparatus in all circumstances.
A scaffolding platform adjusted to
the correct height and appropriate
lighting will be more comfortable
for the installer and facilitate faster,
better quality sanding.
+
It is strongly recommended to
connect the long-reach sander
to a dedicated vacuum system to
provide maximum cleanliness and
offer maximum protection.
Attention
!
ROCKFON recommends the use of a
long-reach sander equipped with a
rigid sanding platform
(ref. no. 495 168) such as FESTOOL
PLANEX LHS 225 EQ-PLUS or
equivalent.
!
Sanding techniques
To guarantee quality sanding, the installer must use the long-neck sander for large surfaces.
The sanding block and handle are reserved for perimeter sanding work and for small retouches.
The chosen sandpaper must have 80 or 100 grade grit.
Repeat joint check
A final joint check is highly recommended before applying the final render. Although it is always
possible to correct unevenness, the work is more difficult once render has been applied. It is much
easier to correct a joint before spraying the finishing coat.
16
System installation
Perimeter finish and site masking
Tools required
• Adhesive masking tape
• Sealant pump gun
• Protection film e.g. polyethylene
• Acrylic sealant cartridge
Recommendations
• Site light
• Scaffolding
+
The necessity of masking will
depend on the site progress. The
need to protect the floor, furniture
or walls will vary for each situation.
This chapter only covers the
installation of vertical protections
against walls.
Vertical protection installation
Caution
!!
The placement of the adhesive
masking tape determines the
quality of the edge finish during the
spray phase. If it is set too low, the
installer risks spraying the wall. If it
is set too high, the ceiling will not
be completely protected.
Prohibited
–
Never use silicone joints.
These particular joints cannot be
painted and prevent a perfect finish
during the spray phases. Use acrylic
sealant. Further information
and details can be found in the
ROCKFON System Mono Acoustic
solution library.
17
System installation
Render
Tools required
• Protective mask
• Safety goggles
• Mixer
• Rotating blade for mixing the render
• Spray machine for low pressure application (type Euromair MPE 80 or equivalent) or spray machine
for high pressure application (type Euromair CP10 or equivalent)
Check
!
The only method of checking the
render consumption is to count the
boxes used as spraying progresses.
This simple and efficient operation
can become complex on large
surfaces, hence dividing into
sections is recommended.
Consumption
The nett consumption is 1,2 kg/m². To realize this consumption with low pressure application the
brute amount of render applied is 1,2 kg/m² for the ROCKFON System Mono Ready-Mix white and
1,2 - 1,4 kg/m² for the ROCKFON System Mono Ready-Mix in colour. To realize this consumption with
high pressure application (max. 3,5 bar) the brute amount of render applied is 1,2 - 1,4 kg/m² for the
ROCKFON System Mono Ready-Mix white and 1,3 - 1,5 kg/m² for the ROCKFON System Mono ReadyMix in colour.
For example, by dividing a 180 m²
ceiling into three 60 m² sections, the
theoretical consumption indicates
a spray of 78 kg per section, or
approximately 4 buckets.
It is possible to apply the Mono Ready-Mix on surfaces other than the Mono Acoustic itself, such as
plasterboard and concrete beams. However, once treated, these surfaces will not offer any acoustic
benefit, but will provide the same finish as the Mono Acoustic to give a homogenous appearance.
As the spray is done in three coats,
it is recommended that a little more
than one box be sprayed per coat
and per 60 m² section.
Stirring and mixing of ROCKFON System Mono Ready-Mix
• Stir up the ROCKFON System Mono Ready-Mix in the tub
• Empty the contents of the bucket into the mixing tank
Check
!
Take into account the specific
layout/design of the project and
the depth of the tank/pipe for the
calculation.
Depending on the machine type,
the tank/pipe bottom corresponds
to a certain loss of render finish
associated with the initial filling.
Treating a 500mm plasterboard
downstand with the Mono Acoustic
finish coat along a 30 m facade
results in additional consumption of
20 kg, or one box of render.
Attention
!
Even if the Mono Ready-Mix has
a pasty texture in the packaging,
it is not necessarily ready to use.
Whether white or in colour, it must
be mixed in accordance with the
directions outlined in this chapter.
18
System installation
Render
Recommendations
Spraying
• The nozzle must be 0,80 m from the ceiling.
• Treat the peripheries by following a slow and linear motion along the perimeter of the room.
+
ROCKFON recommends the
use of a spray machine such as
EUROMAIR MPE 80 or CP but it is
also possible to use equivalent machines. Airless spray equipment
is not allowed. Please contact your
local technical support for more
info on the specifications of the
machinery.
• By regular rotations of the nozzle, apply a first coat of approximately 0,4 kg/m² onto the ceiling.
• Progress in areas of about 0,6 m, depending on the diameter of rotation. The layers should cover
each other to provide good coverage.
• The drying time is approximately four hours per coat.
• After the first spray coat has completely dried, repeat this procedure and apply a second coat of
0,4 kg/m².
• A
fter the second spray coat has completely dried, repeat this procedure and apply a final coat of
0,4 kg/m².
+
During the spray phases, the nozzle
must be between 0,80 m from the
surface to be sprayed. A scaffolding
platform adjusted to the correct
height and appropriate lighting
will be more comfortable for the
installer and facilitate a faster,
quality spray finish.
+
If the surface to be sprayed is large,
it is recommended that it be divided
into sections in order to control the
render consumption. The presence
of columns, windows or beams can
help with this division.
Recommendations
+
It is recommended to wait for the
final coat to dry completely to have
a final rendering of the finished
ceiling. The drying time depends
on the conditions of the site. To
learn what ROCKFON recommends,
see page 3.
19
System maintenance
Servicing
ROCKFON System Mono Acoustic ceilings require only minor maintenance, and the amount will
depend on the use of the room in which it is installed.
Mono Acoustic ceilings should only be installed by authorised system installers. (Please contact
ROCKFON for contact details of your nearest authorised installer or visit us at www.rockfon.com).
Any small repairs and surface processing must be carried out exclusively by authorised installers.
It is possible to apply the ROCKFON System Mono Ready-Mix on surfaces other than the
Mono Acoustic panels, such as plasterboard and concrete beams. However, once treated, these
surfaces will not offer any acoustic benefit, but will provide the same finish as the Mono Acoustic to
give a homogenous appearance.
Overview
Cleaning
Vacuum cleaner with soft brush at low power.
Surface discolouration
Apply a thin layer of render using the Mono trowel.
Minor cracks and scratches
Apply a small amount of ROCKFON System Mono Ready-Mix
using a paintbrush or paint gun.
Cracks and indentations
Seal by using ROCKFON System Mono Acoustic Filler, then
apply a small amount of ROCKFON System Mono Ready-Mix.
Larger cracks and damage
Fill the gap with a “plug” made of ROCKFON System
Mono Acoustic panel, then cover the repaired spot with
ROCKFON System Mono Ready-Mix.
Maintenance
Cleaning
The Mono Acoustic ceiling is anti-static so it does not retain dust and can easily be kept clean.
To clean the panels, use a vacuum cleaner with a soft brush operating at low power.
Mono Acoustic ceilings must not be cleaned with water or wiped with a wet cloth, etc.
Renovating
Mono Acoustic ceilings can be renewed/refreshed by applying a new layer of ROCKFON System
Mono Ready-Mix. For this, ROCKFON advises you to call the company that performed the initial
works or a qualified Mono Acoustic installer. The sound absorption ratio decreases by approximately
10% with each additional layer of Mono Ready- Mix.
Surface discolouration
In the case of surface discolouration, apply one or more new, thin layers of ROCKFON System
Mono Ready-Mix. If the discoloured spots are due to water action (or because of deposition or
tobacco smoke) the surface should be thoroughly dried and sealed prior to commencement of
repairs. Approximately 0,3 kg render per m2 should be applied by using dedicated Mono Acoustic
equipment. In order to preserve the ceiling’s acoustic properties, the recommended amount of
render should not be exceeded. The sound absorption ratio decreases by approximately 10% for
each additional layer of ROCKFON System Mono Ready-Mix.
20
Prohibited
–
Do not use any paints or similar
products that provide a total
covering over the surface, since
such products will reduce the
ceiling’s acoustic properties.
System maintenance
Repairs
Any damage to a Mono Acoustic ceiling can always be repaired. However, the base materials that
the ceiling is made of must be used. For tile reparations during the ROCKFON System Mono Acoustic
installation, please refer to your local technical support for more information.
For damages that occur after the ceiling is installed, ROCKFON recommends calling upon the
company that installed the original ceiling or a qualified ROCKFON System Mono Acoustic installer.
Superficial damage - Minor cracks and scratches
Superficial damage (screw holes, light impact) or minor cracks and scratches can be easily repaired
using a small quantity of ROCKFON System Mono Ready-Mix applied with a paintbrush on the
damaged parts. Alternatively, a thin layer of the render may be applied using a Mono Acoustic paint
gun.
Structural damage - Larger cracks and damage
In the case of larger cracks, significant or structural damage (water damage, heavy impact) follow the
procedure for replacement of entire panel fragments. In this case, the repair method is as follows:
1. Remove the damaged panel fragment by cutting it out with a knife at an angle of 60°.
2. Cut a matching “plug” out of a new Mono Acoustic panel and fasten the “plug” in the hole using
the Mono Filler.
3. Sand the surface around the hole in order to remove the excess render.
4. Apply a new layer of the filler on the seam between the “plug” and the Mono Acoustic panel,
following the instructions set out in the system installation guide.
5. Apply the ROCKFON System Mono Ready-Mix, following the instructions set out in the system
installation guide. The render layer will become “toned” which will minimise the contrast
between the elements. Alternatively, apply the render over the entire ceiling surface.
1. Removing damaged panels and sanding surrounding area
2. Installing new panels and filling edges
3. Sanding of dry joints and spraying of the area
4. Spraying and removal of masking protections of walls, floor etc.
21
Easy to install and durable, they protect people from noise and the
spread of fire. They are our way of making a constructive contribution
towards a sustainable future.
Create and Protect is what drives us. It means putting people first,
sharing success and maintaining trust.
It’s our rock-solid promise to you. At ROCKFON, Create and Protect is
what we do - and it’s inspired by you.
ROCKFON
(ROCKWOOL Finland)
Pakkalankuja 6, PL78
FI-01511 Vantaa
Finland
Puh. (+358) 09 8563 5880
Faksi (+358) 09 8563 5889
www.rockfon.fi
[email protected]
11.2015 | Kaikki värikoodit perustuvat NCS - Natural Colour System®© järjestelmään. Tekijänoikeus ja käytössä lisenssillä NCS Colour AB, Tukholma 2010.
Oikeus muutoksiin pidätetään ilman erillistä ilmoitusta. ROCKFON ei vastaa painovirheistä.
We believe our acoustic stone wool and metal solutions for ceilings
and walls are a fast and simple way to create beautiful, comfortable
and safe spaces.
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