PhoneStar Acoustic System for Mass Timber Mid Floors

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A new era of soundproofing

PhoneStar is a revolutionary soundproofing board, made of a combination of sand and cardboard. Designed to reduce both impact and airborne sound, while adding thermal mass to structures.

The decoupling fleece acts as a decoupling layer between PhoneStar boards and the structural floor, separating the two hard surfaces.

Noise reduction

Mid-floor construction Acoustic Build Up Acoustic Build Up Height
Floor Covering IIC STC Ln,w Rw Notes
126mm CLT no ceiling

FloorMuffler US

Phonestar Tri

5mm Plywood

22mm

N/A 44 40 66 (0)  40 (0 ; -3)   
126mm CLT no ceiling

FloorMuffler US

 Phonestar Tri x2 layers

5mm Plywood

37mm

N/A 47 42 63 (0)  42 (0 ; -3)   
126mm CLT no ceiling

FloorMuffler US

Phonestar Tri x2 layers

5mm Plywood

37mm

5mm Native Vinyl  48 44  62 (0) 44 (-1 ; -4)   
126mm CLT no ceiling

GenieMat FF17

Phonestar Tri

18mm Plywood

50mm

N/A 42 45 67 (1) 45 (-2 ; -7)  
126mm CLT no ceiling

GenieMat FF17

Phonestar Tri x2 layers

5mm Plywood

65mm

N/A 42 47 64 (1) 47 (-2 ; -7)  
126mm CLT no ceiling

20mm Wolf Miwo

Phonestar Tri

18mm Plywood

53mm

N/A 43 48 64 (1) 48 (-2 ; -8)  
126mm CLT no ceiling

20mm Wolf Miwo

 Phonestar Tri x2

18mm Plywood

68mm

N/A 46 49 61 (2) 49 (-3 ; -8)  
126mm CLT no ceiling 

Adhesive

Phonestar Tri

5mm Plywood

20mm

N/A 38 35 72 (-1)

35 (0 ; -2  
140mm CLT no ceiling

PhoneStar Tri x2 layers

 MiWo

50mm

N/A 52 55 56 54  
148mm CLT no ceiling

PhoneStar 25

 MiWo

PhoneStar Tri x2 layers

75mm

N/A 56 59 52 58  
140mm CLT with drop ceiling

PhoneStar Tri x2 layers

MiWo

50mm

N/A 64 70 40 71 Ceiling Detail: 60mm timber battens, 25mm steel profiles with TPS spring clips, 40mm mineral wool, PhoneStar Tri, Plasterboard

System documentation

Acoustic test reports for all referenced results are available on request. 

Case Studies and Inspiration

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