Build Daily

Technological Solutions

August 12, 2017 18:07

Acoustic plaster to silence

Acoustic plaster in public areas

Remember how when you visit a restaurant in the main hall at you like a silence falls, though permeated with unobtrusive hum of voices.The theater is all outside sounds as if cut off, allowing the actors to express themselves fully.This effect is only possible thanks to the sound insulation or as it is called, acoustic plaster.The first sign of it is the use of decorative water-based coating for use in public areas.The restaurant, as well as in the theater, and many other social complexes you will notice that the walls are covered with water-dispersion paint, which is well absorbed in the acoustic plaster and does not clog the pores available in it.

Location pores in the plaster - it is a very interesting topic.First of all, let's see why the plaster gets sound absorbing properties.Mainly due to the lightweight fillers are often granular, particle size which does not exceed 5 mm.It can be crushed pumice, vermiculite, expanded clay.Through hollow fillers plaster has a very low density.Often soundproofing plaster added aluminum powder, which, as dry mixture, releases the gas, which increases the porosity of the plaster layer.Sound, as we know, is reflected from obstacles, imagine his way into a loose, porous mass - movement, partial reflection from the wall of the cavity, the sound, already weakened moves on a new cavity and its new wall weakening.And so on until a maximum mute.

So, thick and dense paint like enamel, largely clog the pores in the acoustic plaster, which is why its properties deteriorate .Perhaps this is due to errors with the way the coating (enamel, wallpaper), many people consider noise insulation plaster myth.

sound insulation plaster as an alternative finishing flat

The apartments sound insulation plays an important role, given the fact that around your dwelling sector other people live, with their habits, which may not suit you.For example, a neighbor or a musician is able to make all the tenants in the building, as in the song Pyekha, or poison their lives.Therefore, if the sound absorbing properties of the material from which the house is built, extremely low (the denser the structure of the walls, the worse the acoustic insulation), it makes sense to perform a self-silencing finish.

Surface acoustic plaster walls is carried out by a standard technique, but some differences are still there.In particular, for the application of a plaster beacons are not necessary, they will be an excellent conductor for the sound. thickness acoustic plaster layer should not exceed 2.5 centimeters , ideally sufficient to limit the 20-th millimeters.To improve the acoustic properties of the plaster, you can try to create a layer between the wall and coated by a tightly stretched over a distance of 0.5 cm from the walls of metal mesh with fine mesh (about 10x10 mm).Between the wall and the plaster will air pockets that will only strengthen its coating properties.

noise protection plaster - from surface preparation to result

to acoustic plaster, which should be applied one layer, well-rested on a vertical surface, the wall is covered with a thin layer of cement-sand mortar as a primer.The recommended solution is to add a 10-tiprotsentnoe lime putty to increase the viscosity and adhesion (adhesion).When the soil is slightly (but not completely) dries, it can be applied soundproof plaster smooth, homogeneous layer of about two centimeters thick.If suddenly it turns out that the work had to be stopped before the wall completely disappeared under a layer of plaster, cover edge should be done by a third thinner than the entire layer, so you can continue to apply the plaster overlap.This method avoids the occurrence of seams.

When applied to the plaster, grout it to do in any case should not, on the contrary, it is necessary to treat the surface spreader and leave as is.Painting acoustic plaster is allowed only water-dispersion paints, often on top of it at restaurants or pull the fabric imposes a wooden lattice that performs a purely decorative function.The same wall decoration is permitted in residential areas.If you combine sound insulation plaster with other sound-absorbing materials, you can count on the fact that the neighbors will not hear the songs in your performance, but you will not become an unwitting listener showdown in an apartment behind the wall.