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BICESTER PRODUCTS LTD

Soundproofing Specialists & Suppliers



 

DIY Sound Proofing for Domestic Ceilings

 

Loud noise is always a problem that can be heard through floors of flats and houses and is always more of a problem when there is no background noise to help mask it within your own home.  However, normal everyday noises such as normal speech, normal television/radio volumes should not be heard and the current regulations for noise control through separating walls have been introduced to stop this.

 

If you are experiencing any of the above noise problems, we can offer sound insulating materials that will offer a solution.  Before remedial procedures are undertaken, it needs to be determined what type of noise is being experienced.  Is it airborne or impact?  Airborne noise is the type emitted by speech or music.  Impact noise is as it suggests, noise created by footfalls, doors closing and so on.  Impact noise is usually structural borne sound which is directly transmitted through walls or floors whereas the airways of airborne sound actually penetrates these dividing structures without any other helping factor.

 

Noise from above is usually through uninsulated floors and ceilings in properties that were built or converted before the current stringent rules for sound control through floors and walls were introduced.  Noise from above should really be tackled from above but can only be carried out with the co-operation of your neighbour.  Click the following link for more information on this Floor Soundproofing.

 

Solution

The most effective way to insulate the ceiling from below is to remove the existing plasterboard and infill between the joists with 100mm of our Acoustic Mineral Wool.  Our Resilient Bars should then be screwed at 400mm centres across the underside of the exposed joists.  A layer of 12.5mm plasterboard can then be screwed to the bars and a layer of our SBM5 Soundproofing Mat glued to the plasterboard will significantly enhance the sound insulating factor.  Another layer of 19mm plasterboard plank should be screwed up sandwiching the soundproofing mat and finishing the installation.  2 layers of high density soundblock plasterboard would be even better.  It should be noted that the plasterboard should not come into contact with the surrounding walls.  A small gap should be left which can be filled with a flexible sealant.  DO NOT USE ACOUSTIC SEALANT as these do not offer the correct amount of flexibility!

Other Solutions

Sometimes it is not desirable or possible to remove the existing ceiling so provided you have enough height to drop approx 4" (100mm) the following sound reducing measures can be adopted as shown on the detail below.

 

 

cross section of a soundproofed ceiling

 

 

As can be seen from the drawing, it is possible to insulate a ceiling without disturbing what is already there.  Provided you have enough existing ceiling height, a minimum of 50mm deep battens should be screwed to the underside and through to the supporting joists.  50mm Acoustic Mineral Wool can then be glued between using our special aerosol adhesive and our Resilient Bars can then be screwed across the underside of the battens.  Plasterboard and SBM5 Soundproofing Mat is then installed onto the bars as already described above.

 

 

acoustic mineral wool

Acoustic Mineral Wool

 

Acoustic Mineral Wool is a non-flammable product designed to a density to give maximum sound absorption.  This product is essential for application into stud wall partitions and between the joists in timber suspended floors.  Available in a variety of thicknesses, Acoustic Mineral Wool enhances the sound insulating performance of any structure in which it is installed.
Resilient Bar for decoupling ceilings and walls

Resilient Bars

 

Resilient Bars provide a flexible link between plasterboard and the substrate to which it is applied.  Resilient Bars are most useful when installed onto timber stud prior to the plasterboard, which is screwed to the bars and also beneath timber joists to improve the sound insulation of separating ceilings.

SBM5 soundproofing mat

Soundproofing Mat SBM5

SBM5 Soundproofing Mat is perhaps the most versatile product within our range.  This mineral loaded product has a high mass for minimum thickness which is equal to that of lead.  SBM5 can be used to substantially enhance the sound insulation qualities of plasterboard when sandwiched between two layers.  This 'deadsheet' is an excellent anti-drumming material and is also used improve the sound insulation factor of separating floors.

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