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Acoustic Insulation and Soundproofing

According to Part E of the Building Regulations implemented by the government legislation in 2004 all newly build houses must be fitted with acoustic insulation to improve sound performance of wall partitions, separating floors, and ceilings.

Sound pollution is commonly recognised as a household issue in all types of building construction but unless special care is taken by the builder to provide sufficient acoustic insulation for the walls, floors and ceilings, the homeowner is likely to hear allot of unwanted sounds from footstep noise in the room above to movie playing on the home theatre down the hall.

Sound insulation is required to prevent noise (unwanted sound) being transmitted either from room to room within a building or from external sources. The transmission of noise within a building is by two main routes:

  • Airborne Noise – as the name suggests generally this is noise transmission through the air. It is complicated however in that this noise may generate vibrations in walls, floors and ceilings which then transmit the airborne sound to other parts of the building. The use of absorbent layers and/or the addition of mass to the structure will help reduce airborne noise transmission.
  • Impact Noise – the most common instance of impact noise is footsteps on floors in blocks of flats and similar buildings. The use of resilient and absorbent layers and/or the addition of mass to the structure will help reduce impact noise transmission.
  • buildings are also prone to flanking transmission where both airborne and impact sound energy may be transmitted indirectly through the structure (for example at the junctions of floors and walls). Great care in detailing and the isolation of elements is required to minimize flanking transmission.

Air gaps passing through the structure offer a direct route for sound transmission. Great care should be taken to seal joints between and around elements and around service penetrations. Sound-dampening acoustic batt insulation installed into partitions during construction is a very good choice for reducing sound pollution. It is highly recommended that the insulation fits snugly into place, and that it fills the wall cavity. Acoustic insulation should be carefully cut to fit around electrical boxes and pipes eliminating any gaps or holes that could easily allow sound to flow through.

Sound waves are reflected when they hit a hard surface. Acoustic insulation is made from porous materials of varying density and composition to convert the sound energy into heat within the open pores and absorb part of the reflected sound. In order to maintain the best absorption values the air channels should be open to the surface so that sound waves can propagate into the material. Pores in acoustic insulation should not be sealed by paint or any other coverings. Any protective shielding for the acoustic insulation should generally be perforated to maintain soundproofing values. Acoustic insulation should also be kept dry during storage to maintain its soundproofing capabilities.

Using mineral wool as a sound absorbent layer in partitions and floors significantly improves their acoustic performance, whilst only adding minimally to the overall mass of the structure. In partitions glass mineral wool complements the plasterboard by absorbing airborne sound in the cavity and reducing reverberation, It Is particularly effective at preventing the hollow sound that can occur in partitions with unfilled cavities.

The ability of an acoustic insulation material to absorb sound is usually provided in the form of an absorption coefficient. The absorption coefficient is defined as the ratio of sound energy absorbed by a given surface, to the sound energy incident upon that surface. The absorption coefficient can vary from 0 to 1. If for example the absorption coefficient is 0.9, then 90% of the sound energy will be absorbed by that material. Most porous absorbers are more efficient at high frequencies, while improving the materials thickness, or mass, can increase low frequency absorption.

Sound Transmission Class (STC) is a scale used to rate partitions like walls or floors on how well they reduce sound or noise levels. The rating directly reflects the number of decibels (dB) a partition reduces. Normal conversation is about 60 dB. A standard interior wall with 3/8" gypsum board has an STC of about 35. This means if someone were speaking at normal level in the next room, you would hear about 25 dB of noise, or just over a whisper.

Insulationshop.co offers wide range of acoustic insulation products from manufacturers: BRITISH GYPSUM, CMS DANSKIN, CELLECTA, EUROFORM, ISOMASS, ISOVER, JCW, KARMA, KNAUF, MARMOX, ROCKWOOL, SUPERGLASS, THERMAFLEECE, URSA and XTRATHERM are suitable for soundproofing all kinds of partitions. For more information about particular product please see product description.

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Brand: Speedline Model and Size: 3m
Delivery Time: 1 - 2 days
Resilient Bar is a thin metal channel designed to substantially improve the sound insulation of plasterboard walls and ceilings. The channel effectively isolates the plasterboard from the studwork, eliminating 'direct contact' to dissipate sound which would normally be transferred through the frame...
£4.59
£5.51 inc VAT
Brand: Knauf Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1 - 2 days
12.5mm Knauf Soundshield is a plasterboard designed for use in areas where sound reduction is of particular importance. Its high mass and tuned core help absorb sound energy, giving enhanced acoustic performance to drywall systems. Knauf Soundshield  comprises a core of calcium s..
£17.36
£20.83 inc VAT
42 (0e 0s)
25mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 20)
Guide Price
Brand: Knauf Model and Size: 1200x600 - 14.4m2
Delivery Time: 2 - 3 days
25mm Rocksilk RS45 Universal Slabs are rock mineral wool slabs, available in a range of densities and designed for use in multiple thermal and acoustic applications where density is critical. The standard product is supplied unfaced, but slabs can also be manufactured with a factory applied foi..
Guide Price: £41.63
£49.96 inc VAT
50mm Rocksilk RS60 Universal Insulation Slab Knauf (pack of 9)
Guide Price
Brand: Knauf Model and Size: 1200x600 - 6.48m2
Delivery Time: 1 - 2 days
50mm Rocksilk RS60 Universal Slabs are rock mineral wool slabs, available in a range of densities and designed for use in multiple thermal and acoustic applications where density is critical. The standard product is supplied unfaced, but slabs can also be manufactured with a factory applie..
Guide Price: £41.63
£49.96 inc VAT
Brand: Knauf Model and Size: 1200x600 - 8.64m2
Delivery Time: 2 - 3 days
50mm Earthwool Flexible is a non-combustible, inorganic rock mineral wool slab, used for thermal and acoustic insulation and specifically designed for installation by friction fitting. Earthwool Flexible is odourless, non-hygroscopic, rot proof, does not sustain vermin and will not encourage th..
£45.31
£54.37 inc VAT
25mm URSA Acoustic Insulation Roll
Guide Price
Brand: URSA Model and Size: 1.2x20m - 24.00m2
Delivery Time: 1 - 2 days
25mm URSA Acoustic Roll is a lightweight, non-combustible, unfaced glass mineral wool product used for sound insulation of lightweight metal or wooden stud partitions in both new and existing buildings. This product is manufactured from sand, an abundant, sustainable resource and may also utilise up..
Guide Price: £44.33
£53.20 inc VAT
23mm KarmaFloor Acoustic Overlay Floor Chipboard
Guide Price
Brand: CMS Danskin Acoustics Model and Size: 600x2400mm - 1.44m2
Delivery Time: 3 - 5 days
KarmaFloor Acoustic Overlay Chipboard is designed to reduce impact sound through floors using a heavy material isolated by a softer resilient layer. The board consists of a 5 mm closed cell, cross linked polyethylene resilient layer, laminated to moisture resistant tongue and groove chipboard.APPLIC..
Guide Price: £39.97
£47.96 inc VAT
25mm Isover Acoustic Partition Roll
Guide Price
Brand: Isover Model and Size: 20mx1.2m - 24.00m2
Delivery Time: 2 - 3 days
25mm Isover Acoustic partition roll (APR 1200) is a glass mineral wool, non-combustible product used for partitions, walls and floors acoustic insulation. Although very lightweight and flexible, thus easy to transport, cut into shape and install, it is very strong and highly resilient. Its non-hygro..
Guide Price: £38.36
£46.03 inc VAT
23 (0e 0s)
Brand: JCW Model and Size: 50mm-Free delivery
Delivery Time: 2 - 3 days
50mm JCW Acoustic Isolating Strip is used for preventing sound transfer by isolating partitioning or party walls from ceiling and floorboards and also from joists that the floor is attached to. It can be used in all forms of construction where there is any point of contact. The strip is manufac..
£23.26
£27.91 inc VAT
2 (0e 0s)
50mm Rocksilk RS100 Universal Insulation Slab Knauf (pack of 6)
Guide Price
Brand: Knauf Model and Size: 1200x600 - 4.32m2
Delivery Time: 2 - 3 days
50mm Rocksilk RS100 Universal Slabs are rock mineral wool slabs, available in a range of densities and designed for use in multiple thermal and acoustic applications where density is critical. The standard product is supplied unfaced, but slabs can also be manufactured with a factory appli..
Guide Price: £35.43
£42.52 inc VAT
50mm Rockwool RW5 Universal Insulation Slab (Prorox SL960) - pack of 4
Guide Price
Brand: Rockwool Model and Size: RW5 50mm - 2.88m2
Delivery Time: 2 - 3 days
50mm Rockwool RW5 (Prorox SL960) is a high quality resin bonded rigid slab for a wide range of thermal, acoustic and fire insulation requirements both within buildings and for industry. They are suitable for many applications including thermal insulation for floors, walls, roofs and boiler rooms. Th..
Guide Price: £42.82
£51.38 inc VAT
5mm Polyfoam Floorfoam Knauf
Guide Price
Brand: Knauf Model and Size: 5mm - 112.50m2
Delivery Time: 5 - 7 days
Polyfoam Floorfoam is a closed cell extruded polyethylene foam available in roll form. The closed cell nature of Polyfoam Floorfoam makes it excellent at cushioning vibrations. It has been developed specifically to comply with Building Regulation requirements for a resilientlayer in separating floor..
Guide Price: £169.99
£203.99 inc VAT
6mm ISORubber Base Acoustic Roll
Guide Price
Brand: Thermal Economics Model and Size: 6mm - 10m2
Delivery Time: 2 - 3 days
ISORubber Base can be used in many acoustic flooring solutions. It is designed to provide a continuous unbreached separation between the floor screed and the structural wall and floor. IsoRubber Base is manufactured from 100% recycled or diverted landfill rubber. Being manufactured without blowing a..
Guide Price: £89.60
£107.52 inc VAT
Brand: Isover Model and Size: 75mm - 7.74m2
Delivery Time: 2 - 3 days
75mm Isover RD Party Wall Roll is a medium density mineral wool product, mainly applicable to sound insulation of party wall constructions. Due to its zero U value and soundproofing values, it is manufactured to meet the required conditions under Approved Document E of Building Regulations in Englan..
£53.81
£64.57 inc VAT
50mm Isover Hi-Cav CWS 32 - pack of 14
Guide Price
Brand: Isover Model and Size: 50mm CWS 32 - 7.64m2
Delivery Time: 2 - 3 days
50mm Isover CWS 32 batt is a dense glass wool insulation product, providing high thermal performance in masonry cavity wall insulation, applicable in various type of buildings including domestic, commercial, industrial, health, retail, education. The products density allows it to have extremely low ..
Brand: British Gypsum Model and Size: SIF2 - 2m
Delivery Time: 3 - 5 days
British Gypsum Gypfloor SIF2 Floor Channel is integrated with a specially designed neoprene acoustic insulator, conforming to EN 14195, made to provide support for the Gypfloor SILENT floor system, which is applicable to both refurbishment and remodeling projects on timber joist floors and..
£265.95
£319.14 inc VAT
22 (0e 0s)
Brand: British Gypsum Model and Size: SIF1 - 2m
Delivery Time: 3 - 5 days
British Gypsum Gypfloor SIF1 Floor Channel is integrated with a specially designed neoprene acoustic insulator, conforming to EN 14195, made to provide support for the Gypfloor SILENT floor system, which is applicable to both refurbishment and remodeling projects on timber joist floors and..
£293.67
£352.40 inc VAT
12 (0e 0s)
Brand: British Gypsum Model and Size: GAB3 - 459mm
Delivery Time: 2 - 4 days
British Gypsum Gypframe GAB3 Acoustic Brace is especially designed and engineered to be used in high performance applications where substantial acoustic insulation essential, such as cinemas and theatres, why it is an integral part of the GypWall AUDIO which is a system especiall..
£135.57
£162.68 inc VAT
Brand: British Gypsum Model and Size: GAH1 - 35mm
Delivery Time: 2 - 3 days
British Gypsum Gypframe GAH1 Acoustic Hanger is a very resilient hanger, especially designed for improving acoustic insulation in timber joist ceilings and floors, when used in combination with the CasoLine MF suspended ceiling system providing monolithic appearance, especially if com..
£695.61
£834.73 inc VAT
Brand: British Gypsum Model and Size: GAH2 - 70mm
Delivery Time: 7 - 10 days
British Gypsum Gypframe GAH2 Acoustic Hanger is a very resilient hanger, especially designed for improving acoustic insulation in timber joist ceilings and floors, when used in combination with the CasoLine MF suspended ceiling system providing monolithic appearance, especially if com..
£631.81
£758.17 inc VAT
Brand: British Gypsum Model and Size: RB1 - 3 m
Delivery Time: 2 - 3 days
British Gypsum Gypframe RB1 Sound Insulating Resilient Bar is especially designed for optimizing sound performance of ceiling and wall construction systems. The product can be used in various systems, including:Gypfloor SILENT floor system, which is applicable to both refurbishme..
£8.13
£9.76 inc VAT
Brand: British Gypsum Model and Size: SC1 Spacer Clip
Delivery Time: 2 - 3 days
British Gypsum Gypframe Staggered SC1 Spacer Clip is used for positioning and securing studs in GypWall STAGGERED partition system that has wide application in both commercial and residential buildings such as hospitals, schools, offices, shops etc all due to increased sound insu..
£48.93
£58.72 inc VAT
Brand: British Gypsum Model and Size: GWR2 - 896mm
Delivery Time: 3 - 5 days
British Gypsum Gypwall Rapid GWR2 Nogging Channel is especially designed to be used with the GypWall RAPID dB PLUS internal wall system incorporating Gyproc SoundBloc RAPID linings, providing not only acoustic insulation but also impact and fire resistance, in accordance with the applicabl..
£65.09
£78.11 inc VAT
3mm Cellecta DECKfon Ultralay Acoustic Soft Floor Covering
Guide Price
Brand: Cellecta Model and Size: 1.2x15m - 18m2
Delivery Time: 3 - 5 days
Cellecta Deckfon Ultralay 3 is an acoustic improvement material made from recycled open cell polyurethane foam, used as soft floor covering, very lightweight and easy to cut into shape and install. Its high density and low resonance will considerably reduce sound transmission through concrete floors..
Guide Price: £169.41
£203.29 inc VAT
45mm Cellecta Deckfon Batten
Guide Price
Brand: Cellecta Model and Size: 45 mm
Delivery Time: 3 - 5 days
DECKfon Batten 45 acoustic battens are designed to be installed on steel, concrete and timber separating floors to deliver excellent soundproofing performance. DECKfon acoustic battens consist of a layer of recycled, low resonance, open-cell, flexible polyurethane foam bonded to an FSC certified tim..
Guide Price: £9.16
£10.99 inc VAT
17mm Cellecta Deckfon MDF 17T Acoustic Overlay Board 17mm Cellecta Deckfon MDF 17T Acoustic Overlay Board
Guide Price
Brand: Cellecta Model and Size: 600x2400mm - 1.44m2
Delivery Time: 3 - 5 days
Cellecta Deckfon 17T is an acoustic overlay board designed for conversion and refurbishment projects, where the joists are covered with a timber decking and the ceiling is to be replaced, in order of improving acoustic performance. The same effect can be reached in concrete floors, where the impact ..
Guide Price: £33.14
£39.77 inc VAT
26mm Cellecta Deckfon Chip 26T Acoustic Overlay Board 26mm Cellecta Deckfon Chip 26T Acoustic Overlay Board
Guide Price
Brand: Cellecta Model and Size: 600x2400mm - 1.44m2
Delivery Time: 3 - 5 days
Cellecta Deckfon Chip 26T is an overlay treatment designed for conversion and refurbishment projects, especially used when the ceiling is to be replaced and joist are covered with a timber decking. Due to its excellent acoustic performance, it can also be used to reduce impact sound transmission in ..
Guide Price: £42.79
£51.35 inc VAT
15mm Cellecta Deckfon Ultramat 15 Acoustic Overlay Mat
Guide Price
Brand: Cellecta Model and Size: 1200x1200mm - 1.44m2
Delivery Time: 3 - 5 days
Cellecta Deckfon Ultramat 15 is an acoustic mat used for significantly improving acoustic insulation of decked timber floors, whenever the ceiling cannot be disturbed and the floor to ceiling height is restricted. The product consists of 3mm high density polymeric barrier and 9 mm resilient layer, b..
Guide Price: £57.88
£69.46 inc VAT
Cellecta FIBREfon Micro 50 roll (pack of 3)
Guide Price
Brand: Cellecta Model and Size: 1.2x7.2m - 8.64m2
Delivery Time: 3 - 5 days
Cellecta FIBREfon Micro 50 roll is sound absorbing wool roll made from a unique polyester fibre which provides very high sound absorption properties. Despite its slim design it provides the same acoustic performance as traditional mineral wool products that is twice as thick, which means t..
Guide Price: £68.05
£81.66 inc VAT
30mm Cellecta Fibrefon HiGYP 30TM Acoustic Wall Lining Board
Guide Price
Brand: Cellecta Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 3 - 5 days
Cellecta Fibrefon HiGYP 30TM is especially designed wall board with excellent acoustic performance due to its high density composure contributing to significant reduction in airborne sound transmitted through different surfaces including new build or existing metal framed, timber stud or masonry wal..
Guide Price: £82.48
£98.98 inc VAT
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