soundproofing noise from below ׀ floating floor ׀ airborne noise ׀ soundproofing a floor



Soundproofing Specialists & Suppliers


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Modern domestic houses and flats are built using the correct materials and should be insulated against normal noise nuisance from neighbours below, to the sides and above.  However, loud noise produced from stereo systems etc. will always be heard and is more of a nuisance at night when other daytime background noises have ceased.  


If your flat has been built with a floating floor, airborne noise from below may not be such a problem.  For those of you that do not have a floating floor, there is a lot of room for improvement.  Flats that have been converted from larger buildings nearly always have timber suspended floors.  The best way to soundproof this floor is to lift the floorboards and loosely fit 100mm of Acoustic Mineral Wool (AMW100) between the joists.  The flooring is then replaced and screwed to the joists so as not to squeak when walked on before a floating floor can be installed on top to complet the soundproofing from aboveSound absorption between the joists and a floating floor is now a condition of Part E Building Control for all new build and conversion projects for flats resulting from change of use.  Our floating floor sound insulation is used by contractors to help meet these regulations and so is the best option to achieve good soundproofing for separating floorsFirst 2mm of SBM5 soundproofing mat is laid over the floor to seal the joints from sound leakage then 10mm of Acousticel R10 is loose laid over the mats with a new 22mm moisture resistant t&g floor placed on top.  For best soundproofing results, our 18mm high density Quietboard acoustic flooring should be used which is also used for new build separating floors.  This floating floor system also works well on concrete floors where a floating floor has not previously been installed.

Our Acousticel R10 and Quietboard pages give more information on how to soundproof a floor including application instructions.

Installation of a floating floor will entail an increase in floor height of approx. 30mm so all doors will have to be adjusted accordingly.


Square edged floorboards are notorious for allowing sound leakage through their joints.  This can now be easily addressed by installing more than one layer of our SBM5 Soundproofing Mat with the second layer overlapping the joints of the first.  No fixing is required.  The mats are heavy enough to lie flat without the aid of any mechanical fixings.  SBM5 is often used beneath both our Acousticel R10 floating floor insulation and also Acoustic Underlays as described below.


If it is impractical to fit a floating floor, another option is to replace any existing carpet underlay for one of our Acoustic Underlays.  Our Acousticel A10 underlay is designed to reduce impact noise which will benefit the neighbours but will do little to reduce airborne noise nuisance.  To reduce airborne noise, an acoustic underlay incorporating sound barrier materials such as our Quietfloor should be used.  At only 15mm thick, this insulation is effective at reducing airborne noise in both directions therefore, benefiting yourself and the neighbours below.


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