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 surfaceNRC—
Floors: concrete or terrazzo
PTB · Reference surfaceNRC0.05
Floors: Linoleum, asphalt, rubber, or cork tile on concrete
PTB · Reference surfaceNRC0.05
Floors, linoleum, asphalt, rubber or cork tile on concrete
PTB · Mineral woolNRC0.90
Suspended stone wool panels enclosed in polypropylene film
PTB · Mineral woolNRC0.70–1.00
Bradford Fibertex R4 duct liner
PTB · Mineral woolNRC0.80–1.10
Duct liner (Bradford Fibertex R6)
PTB · Mineral woolNRC0.85–1.00
Duct liner, perforated foil facing
PTB · Mineral woolNRC0.80–1.05
Glass wool building blanket with perforated foil facing
PTB · Mineral woolNRC0.95
Glasswool building blanket
PTB · Mineral woolNRC0.95–1.05
Glasswool building blanket with perforated foil facing
PTB · Mineral woolNRC0.70–1.05
Rockwool blanket
PTB · Mineral woolNRC0.70–0.90
Glass wool building blanket (Bradford Insulation Flexitel)
PTB · Mineral woolNRC0.65
Glasswool building blanket with foil facing
PTB · Mineral woolNRC0.70
Bradford Insulation Supertel glass wool building blanket, perforated metal facing
PTB · Mineral woolNRC0.80–1.00
Glasswool building blanket with 23µm Mylar film facing
PTB · Mineral woolNRC0.85–0.90
Glasswool building blanket with 50µm Mylar film facing (series 2)
PTB · Mineral woolNRC0.75
Glasswool building blanket
PTB · Mineral woolNRC0.80
Glasswool building blanket with perforated foil facing
PTB · Reference surfaceNRC0.10
stage
PTB · FoamNRC0.55–0.90
Basotect Plan 30 soft foam absorber
PTB · FoamNRC1.00–1.10
Büro f. Schalltechnik BBA Plus 120 foam absorber
PTB · FoamNRC0.50–0.75
Büro f. Schalltechnik PUR Sinus 30 flexible foam
PTB · FoamNRC0.80–0.95
Büro f. Schalltechnik PUR Skin 30 foam with film
PTB · Plaster & sprayNRC0.65–0.70
Caparol Capatect Acoustic System BASWA E-200
PTB · Plaster & sprayNRC0.65
Capatect Acoustic System BASWA A-70
PTB · Plaster & sprayNRC0.70
Capatect acoustic system BASWA with plaster coating
PTB · GypsumNRC0.10
Casoprano Casobianca acoustic gypsum board
PTB · GypsumNRC0.10
Casoprano Casostar Acoustic Gypsum Board
PTB · GypsumNRC0.55
Casoprano Casovoice acoustic drywall
PTB · Mineral woolNRC0.75–0.95
Unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolNRC0.75
Unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolNRC0.70–1.00
Unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolNRC0.75
Unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolNRC0.75–1.00
CertainTeed IB420 unfaced fiberglass board, bonded with thermosetting resin
PTB · Mineral woolNRC0.75–0.95
CertainTeed IB600 unfaced fiberglass board
PTB · Mineral woolNRC0.95–1.05
CertainTeed MBP fiberglass blanket, flexible, unfaced
PTB · Mineral woolNRC0.60–0.95
Fiberglass duct liner with surface coating
PTB · Mineral woolNRC0.35–0.60
CertainTeed Ultralite unfaced fiberglass blanket
PTB · Mineral woolNRC0.95
CertainTeed WP16 unfaced semirigid fiberglass board
PTB · Mineral woolNRC0.60–0.75
Conweb Tufflex G-37, cellulose non-woven panel core
PTB · Mineral woolNRC0.55
Conweb Tufflex G-40 cellulose non-woven panel core
PTB · FabricNRC0.65–0.85
Création Baumann ALSO curtain fabric
PTB · FabricNRC0.65–0.90
Création Baumann ASSAGO 97 curtain fabric
PTB · FabricNRC0.50–0.80
Création Baumann AVANTI UN curtain fabric
PTB · FabricNRC0.30–0.50
Création Baumann BASIC PLUS II UN curtain fabric
PTB · FabricNRC0.50–0.70
Création Baumann DUKE curtain fabric
PTB · FabricNRC0.55–0.75
Création Baumann IVAN curtain fabric
PTB · FabricNRC0.55–0.75