Drywall and good sound insulation

Drywall and good sound insulation: good

Plasterboard is very popular. Rough, uneven walls are clad or entire interior walls constructed as a room divider. The key advantage lies in the fast processing, no moisture in the construction and creates an absolutely even surface that can be further coated and clad in any way. Wallpapering and painting are possible as well as the application of plaster or tiles.

A special feature is offered in the Soundproofing, by a two-shell construction in combination with an intermediate insulation can be significantly improved. Special sound-absorbing soundproofing panels, such as the Knauf Sonicboard, additionally reduce the sound through increased density.

Drywall therefore provides the perfect solution for sharing large spaces and creating additional nurseries or hobby rooms.

What is sound and how can sound insulation be improved?

In order to be able to improve the sound insulation, it is first and foremost important to know the process of sound transmission:

Sound waves are movements in air, water or solids. When a sound is made, it causes the air to vibrate, moving like waves on the water. At far distances the waves weaken and thus the sound becomes quieter.

If a wave strikes a massive wall, it is stopped, but its vibration is also directed to the wall, which in turn causes the air or the water behind it to vibrate. The more massive the wall is, the less waves are passed through it. They are still there.

The sound propagation can still be contained by damming massive and thicker walls that allow less vibration, However, this solution is hardly practical. On the other hand, it makes more sense to get that Mass-spring principle to make use of. Here, two walls are used, which are resiliently mounted with each other.

The first wall picks up the sound, still resonates, but does not pass this vibration on to the second wall due to the suspension. The sound waves are interrupted. This effect is achieved by two plasterboard walls with an intermediate insulation. The insulation takes over the task of suspension here.

Sound insulation by insulating materials

Drywall and good sound insulation: sound

With the right soundproofing, children's rooms are fun

Creating drywall walls has the advantage of being lightweight and easy to use Installation no mortar needed becomes. As a result, they do not form a firm connection with the existing masonry and can be easily decoupled to prevent the transmission of sound.

Good for sound insulation are soft and fibrous materials. In the cinema or in the theater, you can often see heavy curtains next to thick doors. These do not vibrate themselves and therefore hardly transmit the sound. In addition, that breaks Structured fabrics sound and splits large sound waves into many small oneswho lose their power and reduce the volume.

This effect is at the Filling drywall with plasterboard used. Will the Space with insulating wool filled cavities are avoided and reduced the noise in the interior and the vibrations of the plasterboard and metal stand. A filling of the cavities with insulating wool is therefore the alpha and omega of good sound insulation. The soft insulating material "swallows" the sound waves and prevents the transfer from one side of the wall to the other. The wall sides are thus decoupled from each other thanks to the mass-spring principle.

With the right plasterboard for good sound insulation

Drywall and good sound insulation: wall

Soundproof walls for a restful sleep

The sound transmission through connected components can hardly be avoided, but limited by massive construction methods. The possibilities are limited in the lightweight construction - but not impossible.

Special soundproof panels, such as Knauf with the Knauf Sonicboard are able to improve the sound insulation by up to three decibels compared to "normal" plasterboard. What seems to be little at first glance, however, can have a noticeable effect. Keeping in mind that the difference between a quiet room and a normal conversation is sometimes only 10 decibels, a third of it is already substantial.

Drywall and good sound insulation: drywall

Important: the sealing tape

The Knauf Sonicboard soundproofing differs from the outside and in its processing hardly from other gypsum boards. However, it has a higher bulk density, so they can be more difficult to vibrate and thus reduces the transmission of sound. For a good one Soundproofing is next to the right material but also the correct processing important, in which some basic rules are to be observed.

Drywall with good soundproofing

Erect the stand wall

Drywall and good sound insulation: good

Inserting the CW profiles

For a dense yet flexible transition, it is important that All UW profiles that are in contact with the wall, ceiling or floor come, get an elastic transition by means of sealing tape.

The self-adhesive sealing tape is attached to all backs of the UW profiles and provides additional decoupling

existing components. The new created wall thus forms an independent component and receives the possibility of a targeted recording of movements, so that cracking is prevented.

The flexible connection to the wall, ceiling and floor additionally prevents the transmission of vibrations, which improves sound insulation.

Drywall and good sound insulation: insulation

Insert insulation material

Once all the UW profiles have been fastened, they form a frame that holds the framework in the form of CW profiles. Cut them so that they are easy to introduce and are not under tension, For the subsequent attachment of the Knauf Sonicboard sound insulation board, the distance of the CW profiles must be adapted to the boards.

Drywall and good sound insulation: good

Screw gypsum board together

When using 60 cm wide plates, the distance between the middle markings (slight groove) is 30 cm, The first profile is here attached with sealing tape to the wall and the distance of the second profile measured from the wall. The distance measurement of all other profiles takes place centrally on the CW profile.

Drywall and good sound insulation: insulation

Fill the joints across

First layer apply plasterboard and insulate

Drywall and good sound insulation: good

Apply second layer

The first Plate is starting on the ground with drywall screws on the stud attached. Make sure that the Knauf Sonicboard soundproofing board does not hit the wall or floor directly.

Drywall and good sound insulation: sound

Fill Knauf Sonicboard

A small joint of 5-8 mm can be closed with Knauf POWER-Elast after a treatment with Tiefengrund. The ensures a slight movement, prevents crackingg and minimizes sound transmission.

Further plates are applied on impact. If plates need to be cut, make sure that cut edges are chamfered for proper jointing: this can be cut with a knife or more easily with a chamfering planer. Plasterboard can be attached continuously, minimizing waste and avoiding cross joints.

If all gypsum boards are fixed on one side, the insulating material is introduced. Mineral wool, rock wool or special acoustic insulation can be used. The heavier the insulation, the better the soundproofing.

Fill gypsum boards

Drywall and good sound insulation: drywall

Prime gypsum boards

If two layers of Knauf Sonicboard plasterboard are applied, sanding the leveled joints of the first layer is not absolutely necessary. However, it is important that all joints are closed over the entire surface and does not survive any putty. For this purpose, the joint material, for example Knauf Uniflott, is pressed laterally to the joint with a spatula or smoothing trowel into the joint and then removed in the longitudinal direction. Dried and protruding edges can easily be repelled with a spatula.

Two layers for better sound insulation

Drywall and good sound insulation: wall

Create according to personal taste

If all joints of the first layer are closed and the surface is level, the second layer of Knauf Sonicboard sound insulation board can be applied. This must cover the joints of the first layer, so it makes sense, the first To divide gypsum board longitudinally and start with half a gypsum board. So will ensure that all joints are covered become. Avoid cross joints here too and chamfer cut slabs for a later correct jointing.

After attaching the last panel, these joints are also filled. The first step is againe good filling of the joints and a longitudinal stripping, After repelling the excess Uniflott filler, the surface is examined for unevenness and, if necessary, the filling process is repeated. Are all Filled joints and ground supernatants, there is a Feinstbearbeitung with knob Uniflott finish. This is particularly fine and compensates for the smallest bumps. Fill and sand again for a perfect surface.

Priming and shaping

Only when the surface meets your requirements can it be redesigned. First and foremost, it is important to apply a primer, This prevents the ingress of moisture during the color design and possibly facilitates a later change of wallpaper.

After the specified drying time, the new wall can be customized according to your wishes Paint, wallpaper or fine plaster decorate and adapt to personal taste. For a good sound insulation, it is recommended to use a wall design with a rough or fibrous surface. This reflects sound waves only minimally, what a good soundproofing and improved room acoustics provides. This can be recommended thick non-woven wallpaper or cotton plaster.

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Video Board: How to Soundproof Interior Walls