soundproofing floors in flats



Soundproofing Specialists & Suppliers

Soundproofing Separating Floors

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 floors 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 can travel up the walls or directly through the floor whereas airborne sound penetrates dividing structures.


Noise Reducing Floating Floors

To address impact noise through a floor, a floating floor would normally be installed and is what is required for all newly built and converted flats today.  Before we go on to talk about installing a floating floor, we should have a look at the existing floor construction.  Squeaking floors are always an annoying problem and are usually easy to deal with.  Squeaking floors are caused by movement of the floorboards rubbing against each other or against the joists on which they are fitted.  Several reasons can be the cause of this including warping of the boards.  The more common reason is due to inefficient fixings holding the boards down.  This can be addressed by installing strategically placed screws to tighten the boards so they do not squeak when walked over.  If it is at all possible, it is always worth lifting any existing flooring to install Acoustic Mineral Wool between the joists.  This will give an immediate 2-4dB improvement in both airborne and impact sound before any other work is carried out.  The floor can then be replaced using screws to ensure it is secure and does not squeak.  With square edged floorboards, noise leakage through the joints can be a problem.  This is often rectified by covering the floor with hardboard which has to be glued and screwed.  A more effective solution is to use our Soundproofing Mat SBM5 which is a mineral loaded deadsheet which is as effective as using lead.  SBM5 is simply loose laid across the floor, butt jointed and wall to wall.  A floating floor can now be installed.  Our 10mm thick recycled resilient insulation Acousticel R10 is also loose laid on top and in a similar fashion to SBM5 wall to wall.  A t&g floor of minimum 18mm thickness can then be installed with the joints glued and with a 5mm gap between the floating floor and the surrounding walls.  This gap should be sealed with our Flexible Sealant.  For a greater improvement in sound loss, our high density QuietBoard should be used for the floating floor layer.


The above system will not only improve impact noise but will also give a significant airborne noise reduction.  Installing the above will raise the height of the floor by approx. 31mm so it will be necessary to adjust any doors that open across the new floor.


Other Solutions

Sometimes it is not possible to install a floating floor system so other measures have to be considered.  It is always worthwhile installing Acoustic Mineral Wool between the joists and we have already dealt with this so we will now concentrate on insulation directly off the existing floor.  The simplest way to reduce impact noise is to replace your carpet underlay with our specially developed A10 Acoustic Underlay.  This will substantially reduce previously heard impact noise by your neighbours below.  If airborne noise is a problem, the simplest way to reduce this is to install three layers of our SBM5 Soundproofing Mat onto the floor with the joints of each layer overlapping the layer beneath.  As SBM5 is nominally 2mm thick, the increase in floor height will only be about 6mm.  An alternative is to substitute any carpet underlay with our QuietFloor acoustic underlay which will reduce both impact and airborne noise.  If QuietFloor is used in conjunction with the SBM5 Soundproofing Mat, the the noise reduction achieved will be enhanced.

Laminate and Hardwood Floor Soundproofing

Laminate and bare floors always create more noise than a carpeted floor for obvious reasons.  This noise can be reduced by installing them as floating floors as already described above.  With laminate floors, due to their minimal thickness, they are not suitable to install onto our R10 because of the flexibility of the both the floor and product.  In these cases we suggest you use a resilient sound insulation more suited for this application called AB10-4 available from an associate company of ours.  If your bare floor is to be a newly installed floor, it may require secret nailing.  As it is not possible to nail through the resilient insulation, another board should be installed on top of the insulation to which the new floor can be nailed.




acoustic mineral wool

Acoustic Mineral Wool

SBM5 heavy soundproofing mat

Soundproofing Mat SBM5

R10 recycled resilient insulation for absorbing impact noise

Acousticel R10

QuietBoard high density acoustic flooring




QuietFloor replacement acoustic underlay for carpets


soundproofing floors in flats


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