PhoneStar Technical Data

PhoneStar TRI Technical Data

PhoneStar soundproofing board has been rigorously assessed by various European laboratories and it has a European Technical Approval – ETA 20/0371 – ensuring compliance with Technical Guidance Document E (ROI) and Technical Booklet G (NI) Building Regulations for Sound.

Data Measurement Verification
European Technical Approval 20/0371 ETA
L x W x D 1200 x 800 x 15 mm ETA
Area 0.96 m² ETA
Weight 18 ± 1.5 kg/m² ETA
Density 1200 ± 100 kg/m³ ETA
Airborne Sound Insulation Rw (Ctr) = 38dB (-5 Ctr) EN ISO 717-1
Impact Sound Reduction ΔLw = 22dB EN ISO 717-2
Reaction to Fire Classification Class E BS EN 13501-1
Thermal Conductivity 0.17 W/mK DIN EN 12664
Vapour Resistance Factor 14 µ EN ISO 12572
Sd Value ca. 0.2 m DIN EN 12572: 2001
Distributed Load 5 kN/m² DIN EN 1991-1-1NA
Concentrated Load 4 kN DIN EN 1991-1-1NA
Flexural Strength - Lengthwise ≥4.8 N/mm² DIN EN 520
Flexural Strength - Widthwise ≥2.8 N/mm² DIN EN 520
Compressive Strength @ 5% Strain (δ5) ≥1000 kPa DIN EN 826
Compressive Strength (δm) ≥1000 kPa DIN EN 826

PhoneStar TRI Acoustic Results on Various Structures

Airborne Sound Insulation

The Airborne Sound Insulation result, Rw, as shown below, is the Weighted Sound Reduction Index in decibels (dB). It describes the airborne sound-insulating power of a particular building element such as walls, floor/ceiling and ceiling/roof structures. The higher the decibel number, the better the airborne acoustic insulation performance. It is characterised by the difference in noise level on each side of a wall, floor or ceiling. This is a laboratory result measured over the frequency range of 100 to 3150 Hertz so the element has been tested in isolation without on-site routes of sound transmission being included. Rw (Ctr) adjusts the Rw figure by including a low-frequency Correction Factor (Ctr). If an airborne result is expressed as DnT,w then this test was carried out on-site, rather than in a laboratory, so flanking sound transmission is included. Airborne noise (speech, music etc) can only be significantly reduced by the addition of a dense product with high mass, but it must also be soft. Decoupling of materials greatly improves the results. The elements must also be well sealed.

Impact Sound Insulation

The Impact Sound Insulation result, Ln,w, as shown below, is the Weighted Normalised Impact Sound Pressure Level in decibels (dB). This refers to the ability of a building floor structure to reduce the impact or footstep sound transmission through it. This is a laboratory test that measures how much impact sound reaches the receiving room below through the floor when a tapping machine is used on the floor above. Because it is a laboratory test, flanking transmission has not been included. The lower the decibel number, the better the impact insulation performance. If an impact test is expressed as L’nT,w, then this is an on-site test result where flanking transmission is included. Flanking transmission is the transfer of sound through paths around a building element, rather than through the building element itself e.g. noise can travel down a common wall in an apartment block as well as through the separating floor.  Impact sound transmission is greatly reduced by adding a resilient layer to the floor and also by decoupling the materials in the floor structure.

Testing was conducted across various structures in the Sound Research Laboratory (SRL). The materials for each system and the results achieved are detailed below. 

Solid Timber Joist Floor

Soundproofing Timber Floors with PhoneStar - Decoupled Timber Joist Floor Solution
Construction Airborne Rw (Ctr) Impact Ln,w
• 18mm OSB Top-deck 60 (-6) dB 53 dB
• 15mm PhoneStar TRI
• 18mm OSB Sub-deck
• 235mm Solid Timber Joists
• 100mm Mineral Wool Insulation (10 kg/m³) in Cavity
• 16mm Resilient Bars (RB1)
• 2 x 15mm Plasterboard
• Without OSB Top-deck 59 (-6) dB 56 dB

Timber I-Joist Floor

Construction Airborne Rw (Ctr) Impact Ln,w
• 18mm OSB Top-deck 60 (-7) dB 55 dB
• 15mm PhoneStar TRI
• 18mm OSB Sub-deck
• 300mm Timber I-Joists
• 100mm Mineral Wool Insulation (45 kg/m³) in Cavity
• 16mm Resilient Bars (RB1)
• 2 x 15mm Plasterboard
• Without OSB Top-deck 58 (-8) dB 57 dB

Solid Masonry Wall

Soundproofing Brick Walls with PhoneStar - Totally Decoupled Brick / Block Wall Solution
Construction Airborne Rw (Ctr) Impact Ln,w
• 115mm Lightweight Clay Block Wall with 15mm Plaster on both sides 66 (-7) dB -
• 10mm Air Gap
• 50mm Metal C-Stud System
• 40mm Mineral Wool Insulation (40 kg/m³) in Cavity
• 15mm PhoneStar TRI
• 12.5mm Standard Plasterboard

*Tested in Czech Technical University, Prague

Metal Stud Wall

Construction Airborne Rw (Ctr) Impact Ln,w
• 12.5mm Standard Plasterboard 59 (-11) dB -
• 15mm PhoneStar TRI
• 50mm Metal C-Stud
• 40mm very high-density Mineral Wool (105kg/m³) in Cavity
• 15mm PhoneStar TRI
• 12.5mm Standard Plasterboard

*Tested in IFT Rosenheim

Timber Stud Wall

Construction Airborne Rw (Ctr) Impact Ln,w
• 15mm Plasterboard 50 (-5) dB -
• 15mm PhoneStar TRI
• 100mm Timber Stud
• (No cavity insulation)
• 15mm Plasterboard

For better results add:

  • 100mm Mineral Wool Insulation (45 kg/m³) in Cavity
  • 16mm Resilient Bars (RB1) on one side