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Soundproofing Ceilings System and Installation:



Soundproofing ceilings has the same principle as floor and wall build ups with a few minor differences. Weight becomes the biggest factor when soundproofing a ceiling so ideally, both sides need treatment, unfortunately this can’t always be achieved due to the living environment (Apartments, adjacent rooms, access). The below description and diagram are an example of a standard ceiling build.


For all ceilings:

• Ensure the joists are strengthened to the capability needed for the structure.

• Insert Acoustic Mineral wool between joists and add thin wiring to ensure the product stays in place.

• Fill the cavity between 75 and 80 percent ensuring a gap between wool and ceiling.

• Then a Clip and channel system that will then be applied must have a minimum gap of 100mm from the adjacent wall.

• The clip system should then create a gridded framework at 400cm width ways and 800mm length ways.

• The channels should then run perpendicular to the clips overlapping by 200mm.

• Ensure all clips and channels are attached into the shoulder channels, securing the joint.

• Then attach your first layer of Acoustic Plasterboard to the clip and channels.

• Remember this layer mustn’t be in direct contact with adjacent surfaces.

• Ensure the panels are applied in staggered joints. Seal joints with a High Tack Tape.

• Seal the perimeter with an Acoustic Sealant appropriate to the project.

• Apply a self-adhesive acoustic membrane to the plasterboard ensuring the joints are staggered between the layers.

• A second layer of Acoustic Plasterboard is then applied ensuring the screws are imbedded into the channel systems, again, leaving a 2 to 5 mm gap around the perimeter. Ensure the panels are applied in staggered joints. Seal joints with a high Tack Tape.

• Seal the perimeter with an Acoustic Sealant appropriate to the project.

• Finish with a plaster skim

*All clip and channel system applications depend on project measurements and weights. Applying to Concrete can offer some difficulties dependent on the project. If you are applying the system to be altered in anyway in the future, ensuring the Acoustic Wool ISNT applied with an adhesive is key. If it is a permanent fixture apply the Acoustic Wool directly to the ceiling.



Requirements for Part E Building Regulations

Table 3.1 Dwelling Houses and Flats – Performance Standards for separating walls, floors and stairs that have a separating function. 

 

 

Value in dB 

Dwellings formed by material change of use 

Walls, floors and stairs 

Airborne Sound Insulation DnT,w + Ctr (Minimum value) 

45 dB 

43 dB 

Floors and Stairs 

Impact Sound Insulation L’nT,w (Maximum values) 

62 dB 

64 dB 

Table 3.2 Rooms for Residential Purposes – Performance Standards for separating walls, floors and stairs that have a separating function. 

 

 

New Build 

Dwellings formed by material change of use 

Walls, floors and stairs 

Airborne Sound Insulation DnT,w + Ctr (Minimum value) 

45 dB 

43 dB 

Floors and Stairs 

Impact Sound Insulation L’nT,w (Maximum values) 

62 dB 

64 dB