VR4 Roof Deck Catalog NRC Values

 

Table 7 lists the noise reduction values for PLB-36, HSB-36, PLN3, HSN3, PLN-24 and N-24 fluted decks with web perforations or fully perforated.
 
It can be found on page 158 of the Verco VR4 Roof Deck Catalog

Table 7: Noise Reduction Coefficients of Acoustical Deck
Profile Roof Insulation AC Insulation Absorption Coefficients SSA NRC RAL Test No.
125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
4000
Hz
PLB-36 AC
or HSB-36 AC
Fiberglass Plain 0.69 1.29 1.11 0.71 0.41 0.22 0.85 0.90 A13-262
Poly-iso Plain 0.11 0.23 0.66 0.89 0.38 0.24 0.53 0.55 A13-220
Roof Board Plain 0.10 0.33 0.55 0.90 0.42 0.23 0.55 0.55 A14-047
PLN3 AC
or HSN3 AC
Fiberglass Plain 0.69 1.32 1.16 0.93 0.49 0.30 0.94 1.00 A13-265
Poly-iso Plain 0.18 0.44 0.86 0.94 0.51 0.36 0.66 0.70 A13-214
Roof Board Plain 0.21 0.45 0.77 0.87 0.50 0.32 0.63 0.65 A14-048
PLN-24 AC
or HSN-24 AC
Fiberglass Plain 0.81 1.27 1.11 0.81 0.47 0.32 0.91 0.90 A13-263
Poly-iso Plain 0.20 0.33 0.87 0.84 0.47 0.32 0.63 0.65 A13-226
Roof Board Plain 0.27 0.56 0.84 0.88 0.52 0.36 0.69 0.70 A14-049

NOTES:
AC - fluted deck with perforated webs
Roof Insulation - insulation board above the deck
AC Insluation - insluation provided for installation in the deck flutes
Plain - unwrapped fiberglass insluation batts without facing

 

Table 8 lists the noise reduction values for PLB-36-CD, HSB-36-CD, PLN3-CD, HSN3-CD, PLN-24-CD and N-24-CD cellular acoustical decks.
 
It can be found on page 158 of the Verco VR4 Roof Deck Catalog

Table 8: Noise Reduction Coefficients of Acoustical Cellular Deck
Profile Roof Insulation AC Insulation Absorption Coefficients SSA NRC RAL Test No.
125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
4000
Hz
PLB-CD AC
or HSB-CD AC
Poly-iso Plain 0.17 0.60 0.91 1.06 0.76 0.53 0.82 0.85 A13-251
Poly-iso Wrapped 0.34 0.53 0.76 0.55 0.40 0.33 0.57 0.55 A13-249
PLN3-CD AC
or HSN3-CD AC
Poly-iso Plain 0.58 0.70 1.16 0.93 0.79 0.63 0.90 0.90 A13-234
Poly-iso Wrapped 0.54 0.70 0.92 0.67 0.50 0.33 0.70 0.70 A13-237
PLN-24-CD AC
or HSN-24-CD AC
Poly-iso Plain 0.84 0.79 1.16 0.98 0.82 0.60 0.96 0.95 A04-143

NOTES:
AC - cellular deck with perforated bands in the flat bottom plate
Plain - unwrapped fiberglass insluation batts without facing
Wrapped - encapsulated fiberglass insulation batts