Sound Deadening Material

[maliths]

  Sylvi said:

Sir,

Re sound Proofing I want to comment as for my Knowledge this is called Sound Transmission Control (STC).

This subject is a very vast subject and there are lot of forums on the web about same.

For Automobiles and Buildings. There are meters to test before and after the amount of (STC).

I suggest with my Experience to control out side sounds entering inside cabin of a motor Vehicle best is to use Fiber glass Wool sheet which has a thin layer of aluminum foil. Which is freely available in Srilanka used in Air conditioning industry.

Paste inside door paneled frames if necessary hood lining also removed remove all seats and original carpets.

Paste on to the flow board above said Fiber glass sheet fix all removed units back.

Under body there are lot of chemicals petroleum based to apply few coatings something like tar which will dry in few hours.

This application must be done when the vehicle is new or after a steam wash as it will stop corrosion also.

I have used same on many Vehicles and happy with the performance.

Wijesinghe.

The term Sound Transmission Control (STC) is not exatcly correct. STC usually refers to Sound Transmission Class and this is a rating of how well a meterial attenuates sound (mainly used in the building industry).

[Sylvi]

  SpEeD FrEak said:

Glass wool is poisonous if inhaled,So there is a chance of it being inhaled by a passenger if it escapes the door panels.

Sir,

I agree with you for your comment about glass wool is poisonous. Please note almost all A/C ducting s are covered with Glass wool and all ends are covered special tape so that glass wool particles will not escape from the joints. Glass wool also act as a very good sound transmission control and temperature control. This job has to be done by a experienced person.

In a Automobile doors have two metal panels that alone controls outside sound. Inside the cabin we have the door covered panel that may be leather or some other materiel with form padded Board.

If any one wants to add more (STC) only thing is to paste some material to inside of the outer metal side from inside of the door.

Sound transmission control is mostly done with building a hollow block and paste one side with whatever the material you select for sound control.

Wijesinghe.

[ultimategorilla]

sorry to bring up this thread after 12 years. But could not find any discussions about sound deadening in other place in Sri Lanka except for this.

Any recent experiences with sound deadening here in Sri Lanka?

[mazdaspeed]

  On 1/17/2022 at 8:14 AM, ultimategorilla said:

sorry to bring up this thread after 12 years. But could not find any discussions about sound deadening in other place in Sri Lanka except for this.

Any recent experiences with sound deadening here in Sri Lanka?

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Daraz has some....but shipped from overseas