FALSE CEILINGS AND SOUND-ABSORBING FACINGS

Celenit panels can be classified as natural sound absorbers.

The panels disperse sound through their cellular structure by progressively reducing its energy, and transforming this into heat. They offer a high level of sound-absorption, particularly at higher frequencies (shrill sounds), which are the most common. Absorption increases with greater thickness and when coupled with a layer of mineral wool. A good level of absorption at lower frequencies (medium-low tones) is obtained by using two layered panels with polystyrene (CELENIT P2). The product also offers further features that are important for sound absorbing facings:

  • thermal inertia, transpiration and the ability to absorb excess humidity, which guarantee a high standard of living conditions;
  • absolute harmlessness and absence of dripping, dense fumes and toxic gases in the event of fire, which make it a safe material;
  • non-deformability (even in the presence of high levels of humidity), strength and unlimited duration, which make it suitable for use in severe conditions, such as in swimming pools, gyms, schools and industrial buildings.

 

LINE A: panel thick 25 mm adhering

LINE B: panel thick 35 mm adhering

LINE C: panel thick 50 mm adhering

LINE D: panel thick 25 mm with cavity > 24 mm

LINE E: panel thick 35 mm with cavity > 50 mm

LINE F: panel thick 50 mm with cavity > 50 mm

LINE G: panel thick 25 mm with cavity > 40 mm and mineral wool > 40 mm

LINE H: panel thick 35 mm with cavity > 50 mm and mineral wool > 40 mm

LINE I: panel thick 50 mm with cavity > 50 mm and mineral wool > 40 mm

 

LINE Coeff. 125  250 500 1000 2000 4000 am
A as 0,08 0,11 0,18 0,50 0,80 0,72 0,40
B as 0,13 0,15 0,25 0,65 0,74 0,90 0,47
C as 0,17 0,22 0,42 0,78 0,65 0,95 0,53
D as 0,12 0,11 0,48 0,72 0,51 0,82 0,46
E as 0,10 0,25 0,67 0,55 0,56 0,86 0,50
F as 0,13 0,39 0,82 0,53 0,89 0,90 0,61
G as 0,25 0,67 1,08 0,86 0,81 1,04 0,79
H as 0,40 0,78 0,98 0,93 0,84 1,00 0,82
I as 0,45 0,89 1,02 0,86 1,01 1,00 0,87

Coefficients of sound absorption as and average am interval values 125 - 4000 Hz
(Frequencies in Hz)

The panels are used to adjust sound in gyms, schools, discotheques, concert halls, studios, etc. The many projects carried out have always given excellent results.

Furthermore, panels used to face walls and ceilings reduce noise levels in industrial buildings. In this regard, please see regulations on the exposure to noise of manufacturing staff. 
Panels used for false ceilings and sound-absorbing facings come in two versions:

The following table lists the various types of false ceiling with Celenit panels necessary for sound adjustment.

Type of false ceiling

Description Model
Adhering false ceiling Concrete slab cast on Celenit panels
Adhering false ceiling Flooring cast on site onto a board structured floor of Celenit panels
Adhering false ceiling "Predalle" flooring underlay, cast on Celenit panels
Adhering false ceiling Flooring in brick cement covered with Celenit panels, fixed with screw anchors
Adhering false ceiling Flooring in brick cement covered with Celenit panels, fixed to wooden laths
Industrial false ceiling Acoustic and thermal insulation of prefabricated concrete roofings
Industrial false ceiling Acoustic and thermal insulation of metal structural roofings 
Suspended false ceiling Panels mounted on omega-shaped metal profiles
Suspended false ceiling Panels mounted on T-shaped profiles
Suspended false ceiling Lowered edges panels mounted on T-shaped profiles
Suspended false ceiling Panels mounted on T-shaped profiles, on top of which a thin mineral wool mattress is placed
Suspended false ceiling Chamfered-edges panels mounted on foldaway profiles
Suspended false ceiling Chamfered-edges panels mounted on foldaway profiles with mobile panels 

 

Figure 1: Acoustic and thermal insulation using Celenit P2 panels in industrial buildings.

 

Figure 2: Wall sound-absorbing in a particularly noisy environment.

The Celenit panels used are Celenit N 50mm thick.