The
choice of the system: Lafarg e
Gips recommends NIDA Sonic sound-proof suspended ceiling ceilings. It is a wide range of plasterboard
panels with various types of holes and perforation. NIDA Sonic boards installed as a
suspended ceiling cover increase the sound absorption in the room. The sound absorption
characteristics of NIDA Sonic boards coincide with the spectrum of human voice
intensity as a function of frequency. This means that these panels
perfectly suppress the noise coming from the human voice while reducing the
phenomenon of reverberation or sound reflection.
Choosing the system:
Lafarge Gypsum recommends NIDA
Sonic suspended soundproofed ceiling ceilings. It is a wide range of plasterboard
panels with various types of holes and perforation. NIDA Sonic boards installed as a
suspended ceiling cover increase the sound absorption in the room. The sound absorption
characteristics of NIDA Sonic boards coincide with the spectrum of human voice
intensity as a function of frequency. This means that these panels
perfectly suppress the noise coming from the human voice while reducing the
phenomenon of reverberation or sound reflection.
High aesthetic values
Cladding of walls and ceilings made
of NIDA Sonic boards blend in perfectly with the elements of interior design,
giving enormous possibilities in their design. After installation, the panels form
a perfectly straight and uniform surface with no visible connections between
them. The boards can be combined on one surface with suspended
modular ceilings. Particularly attractive effects are
obtained by using NIDA Sonic perforated plates in combination with standard
gypsum plasterboards.
Original perforation patterns:
A wide range of NIDA Sonic shape
and perforation allows you to choose the layout and geometry of the pattern
depending on individual preferences and the required acoustic conditions of the
room. The ability to paint plates and two colors of the
perforation background - felted fabric gives additional possibilities to obtain
interesting and original visual effects.
Layout and layout of boards
Perforated NIDA Sonic gypsum panels
after installation create a homogeneous surface with attractive aesthetics and
excellent acoustic properties. Depending on the perforation of the
boards - surface or modular perforation - we can obtain interesting decorative
effects. Laying the boards should start from the center of the room
according to the attached diagram. The arrangement of NIDA Sonic
boards should be planned in such a way that the longitudinal edges of the
boards are located parallel to the direction of sunlight.
Trimming plates
NIDA Sonic should be cut with a
knife. When cutting, the plate should rest on a flat surface. We cut the cardboard with the knife
along with the cardboard, then cut the cardboard on the face side and break the
gypsum core. For this, where a particularly precise cutting of the panel is
required, it is recommended to use a small-sized saw blade for cutting gypsum
boards or a mechanical jigsaw. Before using the saw, cut the nails
with a knife at the intersection.
Grate design
The grid structure for ceiling and
wall cladding is identical to standard gypsum boards. The only difference is the smaller
distance between the transverse profiles - 300 mm . For the ceiling lining system with
the use of NIDA Sonic boards, it is possible to use grids with a two-level
cross system - recommended, single-level single, single-level cross. Details on the installation of both
ceiling and wall claddings are included in the Lafarge Gips technical reference
book.
Spacing of hangers and profiles -
two-level cross system
The maximum distance between
hangers fixed in the NIDA CD 60 main profile is 900 mm . The distance between main profiles
of the upper layer is max 1000 mm . Distance between cross-layers of
the bottom layer - max 300 mm
Chamfering the edge
Depending on the type, NIDA Sonic
boards have two types of edges. Plates with perforations of type
"n1", "n2" and "n8" have a longitudinal flattened
edge (KS) and a transverse cut edge. In plates with "n0"
perforation, all edges are cut, ie not covered with cardboard. Before fixing the boards, be
slightly chamfered with all cut edges on the face side. The chamfered edges should be
moistened with water before gluing in order to remove gypsum residue. The NIDA
Sonic panels should be designed so that the longitudinal edges of the boards
are parallel to the direction of sunlight.
Fixing the plates to the grate
The method of fixing NIDA Sonic
boards to the grate made of profiles is done in the same way as for standard
gypsum plasterboards. In the case of ceilings, the
installation of boards starts by screwing in the middle of the ceiling of the
"start" plate, which determines the position of further boards. Therefore, the first slab has to be
particularly precisely aligned with respect to the contour of the room. With wall cladding, the panels are
assembled in the same way as in the NIDA Plaster system. In the case of ceiling linings, the
boards should always be fastened with a transverse edge to the bottom grid
profiles (longitudinal edge of the board parallel to the main profiles). First, screw the transverse edge of
the plate and then the longitudinal edges. The boards are screwed using 3.5x25
mm self-tapping screws. The maximum spacing between the
screws for the ceiling is 170 mmand for the wall 250 mm . The
screws should be separated from the longitudinal edges (covered with cardboard)
at least 10
mm and
from the edge of panels not covered by cardboard and the edges of the holes at
least 15
mm . Screws
are fastened perpendicularly to the face of the plate so that the screw head
does not pierce the surface of the cardboard and at the same time does not
protrude above the face of the plate.
When
filling, pay special attention to the plaster not getting into the perforation
holes. Start
grouting after all the plates have been attached to the grate.
Gluing
boards - boards with a straight edge type "n0"
NIDA
Sonic boards with a straight edge (cut edge without cardboard lining) -
perforated boards on the entire surface - should be combined with each other
using NIDA Planfix Fresh plastering gypsum. The
plates are fixed to the grate as described on pages 4-6. In the
joints between the joints, press the NIDA Planfix Fresh gypsum with a spatula. Pay
special attention to the plaster not getting into the perforation holes. When
mounting NIDA Sonic "n0" boards, you can use a special assembly kit. It
allows to obtain the correct distance between the plates.
Gluing
boards - boards with a flattened edge type "n1", "n2",
"n8"
The
technology of mounting and grouting NIDA Sonic boards with a flattened edge -
boards with a modular perforation pattern - is identical to standard gypsum
boards. Jointing
of longitudinal and transverse edges is carried out with the use of
reinforcement tape and NIDA Start joint plaster or without tape using NIDA
Planfix Fresh plastering gypsum. Grouting
should be started after all the plates have been screwed to the grate. Detailed
information on these works is included in the assembly instructions for Lafarge
Gypsum plasterboards.
Finishing
works / filling
After
all joints of the boards have been jointed and after they have dried, begin to
putty the edges of the boards and screws using the NIDA Finisz joint gypsum. Any
excess of putty that has entered the perforation holes should be removed only
after setting the plaster. It
is also possible to seal the holes with self-adhesive tape in order to avoid
accidental filling with gypsum of perforation during the work of putty. After
the NIDA finishing coat has dried, sand the joints with sandpaper or a sanding
net. If
the use of mineral wool is provided, it should be laid systematically when
fixing the plates to the grate. Mineral
wool should be placed directly on the board. Do
not use a vapor barrier between the fleece and the wool layer, because it
adversely affects the acoustic properties of the entire system
