Back to database
PTB – Physikalisch-Technische Bundesanstalt
Reference data from the PTB database for sound absorption coefficients. These data provide a planning baseline and come from standardised measurements.
1,746 products
Page 4 of 37
PTB · Reference surfaceαw—
Floors: concrete or terrazzo
PTB · Reference surfaceαw0.05
Floors: Linoleum, asphalt, rubber, or cork tile on concrete
PTB · Reference surfaceαw0.05
Floors, linoleum, asphalt, rubber or cork tile on concrete
PTB · Mineral woolαw0.75
Suspended stone wool panels enclosed in polypropylene film
PTB · Mineral woolαw0.60–1.00
Bradford Fibertex R4 duct liner
PTB · Mineral woolαw0.50–1.00
Duct liner (Bradford Fibertex R6)
PTB · Mineral woolαw0.55–1.00
Duct liner, perforated foil facing
PTB · Mineral woolαw0.65–1.00
Glass wool building blanket with perforated foil facing
PTB · Mineral woolαw1.00
Glasswool building blanket
PTB · Mineral woolαw1.00
Glasswool building blanket with perforated foil facing
PTB · Mineral woolαw0.60–1.00
Rockwool blanket
PTB · Mineral woolαw0.60–0.90
Glass wool building blanket (Bradford Insulation Flexitel)
PTB · Mineral woolαw0.25
Glasswool building blanket with foil facing
PTB · Mineral woolαw0.60
Bradford Insulation Supertel glass wool building blanket, perforated metal facing
PTB · Mineral woolαw0.70–0.85
Glasswool building blanket with 23µm Mylar film facing
PTB · Mineral woolαw0.65–0.80
Glasswool building blanket with 50µm Mylar film facing (series 2)
PTB · Mineral woolαw0.65
Glasswool building blanket
PTB · Mineral woolαw0.70
Glasswool building blanket with perforated foil facing
PTB · Reference surfaceαw0.10
stage
PTB · Foamαw0.45–0.85
Basotect Plan 30 soft foam absorber
PTB · Foamαw1.00
Büro f. Schalltechnik BBA Plus 120 foam absorber
PTB · Foamαw0.50–0.65
Büro f. Schalltechnik PUR Sinus 30 flexible foam
PTB · Foamαw0.70–1.00
Büro f. Schalltechnik PUR Skin 30 foam with film
PTB · Plaster & sprayαw0.70–0.75
Caparol Capatect Acoustic System BASWA E-200
PTB · Plaster & sprayαw0.65
Capatect Acoustic System BASWA A-70
PTB · Plaster & sprayαw0.70
Capatect acoustic system BASWA with plaster coating
PTB · Gypsumαw0.10
Casoprano Casobianca acoustic gypsum board
PTB · Gypsumαw0.10
Casoprano Casostar Acoustic Gypsum Board
PTB · Gypsumαw0.50
Casoprano Casovoice acoustic drywall
PTB · Mineral woolαw0.80–0.95
Unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolαw0.80
Unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolαw0.65–1.00
Unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolαw0.75
Unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolαw0.70–1.00
CertainTeed IB420 unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolαw0.75–0.95
CertainTeed IB600 unfaced fiberglass board
PTB · Mineral woolαw1.00
CertainTeed MBP fiberglass blanket, flexible, unfaced
PTB · Mineral woolαw0.55–1.00
Fiberglass duct liner with surface coating
PTB · Mineral woolαw0.40–0.55
CertainTeed Ultralite unfaced fiberglass blanket
PTB · Mineral woolαw1.00
CertainTeed WP16 unfaced semirigid fiberglass board
PTB · Mineral woolαw0.45–0.60
Conweb Tufflex G-37, cellulose non-woven panel core
PTB · Mineral woolαw0.40
Conweb Tufflex G-40 cellulose non-woven panel core
PTB · Fabricαw0.60–0.75
Création Baumann ALSO curtain fabric
PTB · Fabricαw0.70–0.90
Création Baumann ASSAGO 97 curtain fabric
PTB · Fabricαw0.55–0.80
Création Baumann AVANTI UN curtain fabric
PTB · Fabricαw0.35–0.55
Création Baumann BASIC PLUS II UN curtain fabric
PTB · Fabricαw0.55–0.75
Création Baumann DUKE curtain fabric
PTB · Fabricαw0.60–0.80
Création Baumann IVAN curtain fabric
PTB · Fabricαw0.60–0.80