call us 01 8409 286  |  uk +44 (0) 20 7998 1690
Soundproofing WallsSoundproofing FloorsSoundproofing Ceilings


soundproofing with phonestar


*Please Note: PhoneStar was previously branded as Phonewell

Soundproofing has been made easy with PhoneStar, which is a very versatile, high-performance and simple to use acoustic insulation product that exceeds Building Regulations for the Resistance to the Passage of Sound in the UK and Ireland. This eco-friendly, natural and breathable soundproofing board provides outstanding results for both airborne sound reduction (e.g. talking, music, television noise) and impact sound reduction (e.g. footstep and furniture dragging noise) through soundproofing floors, walls and ceilings, in one single product. It is also CE marked. Because it is only 15mm thick, PhoneStar is an ideal soundproofing solution for new builds, conversions, refurbishments and remedial projects, because it takes up very little precious room space and is easy to install. In addition it adds thermal mass to the structure so is very beneficial to use on timber frame or lightweight buildings which tend to overheat in summer. The PhoneStar board will absorb the heat during the day and release it at night-time as the room cools.


PhoneStar Sound Insulation Performance

The PhoneStar soundproofing board on its own has been certified to reduce Airborne Sound by a very high 36 Decibels (dB) (Rw, Ctr = -4). When the acoustic insulation board is then added to a wall, floor or ceiling structure, the overall Airborne Sound Insulation result of the complete structure will be much higher. Please note that when comparing Airborne Sound Insulation results of a complete wall, floor or ceiling structure, the higher the result the better the reduction in airborne sound.


PhoneStar reduces Impact Sound by a very significant 21dB (ΔLw) when laid on the industry standard concrete test floor. The overall impact sound insulation result of the complete floor and ceiling structure can also be tested and this laboratory result in Decibels is denoted by Ln,w. Please note that when comparing Impact Sound Insulation results of the complete floor structure, the lower the result the better the reduction in impact sound.


For a better understanding of airborne sound and impact acoustic insulation please refer to our Soundproofing Tips and Advice section.


The PhoneStar Soundproofing Carcass

PhoneStar is a dense product with a high mass, but it is also soft due to its compacted but loose quartz sand filling contained within an engineered, fluted cardboard carcass. These are the critical characteristics required for noise reduction and it also has unique self-decoupling properties.


Phonestar Carcass

A cross-cut section of the PhoneStar sound proofing board

Weight: 18 kg/m² Density: 1200 kg/m³


Do you want to…


Bullet Exceed Building Regulations for the Resistance to the Passage of Sound?

Bullet Reduce noise from noisy neighbours?

Bullet Reduce noise from within your own home?

Bullet Reduce noise from a recording studio or music practice room?

Bullet Reduce noise between offices or consultants’ rooms?

Bullet Reduce noise in factories?

Bullet Reduce noise between classrooms?


Then PhoneStar acoustic insulation is your one-stop solution – it is immaterial whether the application is for timber, steel or solid concrete substrates. PhoneStar can be used very effectively to soundproof a wall, soundproof a floor or soundproof a ceiling.


PhoneStar Soundproofing Benefits

  • 60dB Airborne and 53dB Impact Insulation for a simple Part-E floor structure
  • 36dB (Rw, -4Ctr) Airborne and 21dB (ΔLw) Impact sound insulation on its own
  • Impact insulation improves by a further 3dB when a hard floor surface is fitted on top
  • For new build, conversion, remedial and refurbishment projects
  • PhoneStar is natural, breathable, pollutant free and odourless
  • Only 15mm thick
  • Easy to cut and fit with simple butt joints
  • Speed of installation time resulting in lower labour cost
  • Excellent thermal mass and recommended with underfloor heating systems
  • Feels like a solid floor underfoot rather than a spongy feel common with foam products
  • Internal non-load bearing walls can be built on top due to very high loading capacity


There are PhoneStar stockists located throughout the UK and Ireland and technical support is readily available both from our own helpful team and from our stockists.


Contact us for more information