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ACOUSTIC INSULATION BETWEEN ADJACENT ROOMS
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ACOUSTIC INSULATION OF PARTITION WALLS
Brick partitions are difficult to insulate with regard to sound, and normally do not achieve the levels of insulation required by existing regulations.
Facing or insulating such partitions with a cavity wall, using Celenit panels of various types and
thickness, considerably increases
acoustic insulation, even at low and medium frequencies, which have been found to disturb most. Indeed, these frequencies correspond to music and conversation (see figure 1), noises which are found most often in houses.
Figure 1
Graph
A: a 12mm perforated brick wall.
Graph B: wall A covered with normal
Celenit panels, 25 mm thick ( N/ 25).
Data for these various applications can be found in table 1 for single walls and in table 2 for double walls.
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TABLE
1
Acoustic
insulation of a single perforated brick wall, 12cm thick, plastered on one side.
|
Wall
depth mm |
Weight
kg/m2 |
Sound
insulation Rw(dB) |
D(dB)* |
|
Non-insulated wall |
135 |
144 |
40 |
0 |
| Wall
covered with normal Celenit panels, 25 mm thick (N/25),
gypsum board plaster. |
175 |
169 |
55 |
15 |
|
Wall covered with normal Celenit panels, 20 mm thick (N/20 +
N/20), gypsum board plaster. |
190 |
178 |
58 |
18 |
|
Wall covered with normal Celenit panels, 50 mm thick (N/50),
gypsum board plaster. |
200 |
174 |
57 |
17 |
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Wall covered with multi-layered Celenit panels with expanded polystyrene, 50 mm thick
(P3/50), gypsum board plaster. |
200 |
166 |
54 |
14 |
|
Wall covered with multi-layered Celenit panels with oriented fibre rock wool, 50
mm thick (L3/50), gypsum board plaster. |
200 |
172 |
59 |
19 |
 |
Wall
acoustic insulation by facing with
Celenit N, Celenit
P3, Celenit L3 panels fixed with plugs.
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* Increased level of
acoustic insulation after facing with
Celenit panels
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TABLE
2
Acoustic
insulation of a double perforated brick wall with cm 8+8 or cm 8+12 plastered on both sides.
|
Wall
depth mm |
Weight
kg/m2 |
Sound
insulation Rw(dB) |
|
Wall cm 8+8 depth insulated in the cavity with normal Celenit panels, 50 mm thick (N/50). |
260 |
211,7 |
53 |
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Wall cm 8+8 depth insulated in the cavity with two crossed layers of normal Celenit panels,
50 mm thick (N/20
+ N/20). |
240 |
206 |
53 |
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Wall cm 8+12 depth insulated in the cavity with two crossed layers of normal Celenit panels,
50 mm thick (N/20
+ N/20). |
280 |
242 |
55 |
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Acoustic
insulation between adjacent rooms by the interposition of
Celenit N panels in the cavity of a partition wall.
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When used as a facing, the panels are applied dry, fixed with screw anchors in the proportion of 4
plugs/m2 and covered with sheets of gypsum board or plaster.
INSULATING WITH LIGHT CELENIT GYPSUM BOARD WALLS
(CELENIT WALL)
When making light walls, coupling panels with gypsum board has been shown to be an effective method of insulation, also from the point of view of sound.
Celenit panels are applied to cover the bearing structure, placed horizontally and fixed with screws.
A further layer of panels or rock wool can be placed among the stanchions of the bearing structure. This solution gives the best results from the point of view of
acoustic and thermal insulation and resistance to fire.
Data relating to the various applications can be found in table 3.
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TABLE
3
Acoustic
insulation of a light wall with Celenit panels and
gypsum board on a metal structure.
|
Wall
depth mm |
Weight
kg/m2 |
Sound
insulation Rw(dB) |
|
Metal structure covered on both sides with normal Celenit panels, 25 mm thick (N/25), and
gypsum board, the cavity being filled with rock wool.
|
155 |
54,3 |
59
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Metal structure covered on one side with normal Celenit panels, 25 mm thick (N/25), and
gypsum board, and on the other side with normal Celenit panels,
50 mm thick (N/50), and gypsum board, the cavity being filled with rock wool.
|
180 |
60 |
59 |
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Metal structure covered on both sides with normal Celenit panels, 35 mm thick (N/35),
and gypsum board, the cavity being filled with rock wool.
|
175 |
60 |
60 |
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Metal structure covered on both sides with normal Celenit panels, 50 mm thick (N/50),
and gypsum board, the cavity being filled with rock wool.
|
205 |
65 |
61 |
| Metal structure covered on one side with normal panels,
25 mm thick
(N/25), and gypsum board, and on the other side with Celenit multi-layered panels with oriented fibre rock wool,
50 mm thick (L3/50), and gypsum board,
the cavity being without rock wool. |
180 |
54 |
56 |
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Metal structure covered on both sides with normal Celenit panels, 25 mm thick (N/25), and
gypsum board, the cavity being filled with rock wool and a metal sheet.
Anti-intrusion wall.
|
180 |
63 |
59 |
 |
Celenit wall - light wall with Celenit panels and
gypsum board |
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