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Duct Lagging is typically used to wrap noisy pipes and ducts, and thus help to block the noise contents moving through he pipes. From air flow to liquid content, duct lagging helps to increase sound absorption in the cavity and provides thermal insulation as well.

Types of duct lagging that include a foil-faced reinforced exterior will readily accept a matching lag tape for easy installation. The foil-face also serves as a protective jacket for indoor or outdoor applications. The 2# per sq. foot barrier and the 2″ thick quilted quilted fiberglass absorber improves overall acoustical performance, especially at low frequencies.


1B Lag

1 Pound per Square Foot Reinforced Foil-Faced Vinyl Barrier

PDF Spec Sheet: 1B Duct Lagging

Product Data:

  • Nominal Thickness: .090″
  • Standard Roll:  48″W x 30’L
  • Weight: 1.0 lb. psf
  • Temperature Range: -10° to +180° F
  • Flammability:  UL 94 meets VO FMVSS 302: Pass
  • Easy to cut, wrap and install with matching lag tape

Acoustical Data:

Sound Transmission Loss (dB) Octave & Center Frequencies

Duct Lagging 1B Lag

ProductOctave Band Frequencies (Hz)
ASTM E-90 & E 413
1252505001K2K4KSTC
1B Lag15162126333826

1B QA-3

1 Pound per Square Foot

Reinforced Foil-Faced Vinyl Barrier Bonded to 1” Scrim Faced Quilted Fiberglass. PDF Spec Sheet: 1B QA-3 Duct Lagging

Product Data:

  • Nominal Thickness: 1.0″
  • Standard Roll:  48″W x 30’L
  • Weight: 1.2 lb. psf
  • Temperature Range: -20° to +350° F
  • “R” Factor:  4.0
  • Flammability – Class A (or 1) Per ASTM E84
  • Flammability / Smoke Density: 19.5
  • Flammability / Flame Spread: 12.5
  • Easy to cut, wrap and install with matching lag tape

Acoustical Data:

Sound Transmission Loss (dB) Octave & Center Frequencies

1B QA-3

ProductOctave Band Frequencies (Hz)
ASTM E-90 & E 413
1252505001K2K4K8KSTC
1B QA-318182330394629

1B QA-9

1 Pound per Square Foot

Reinforced Foil-Faced Vinyl Barrier Bonded to 2” Scrim Faced Quilted Fiberglass. PDF Spec Sheet 1B QA-9 Duct Lagging

Product Data:

  • Nominal Thickness: 2.0″
  • Standard Roll:  48″W x 30’L
  • Weight: 1.4 lb. psf
  • Temperature Range: -20° to +200° F
  • “R” Factor:  8.0
  • Flammability – Class A (or 1) Per ASTM E84
  • Flammability / Smoke Density: 19.5
  • Flammability / Flame Spread: 12.5
  • Easy to cut, wrap and install with matching lag tape

Acoustical Data:

Sound Transmission Loss (dB) Octave & Center Frequencies

1B QA-9

ProductOctave Band Frequencies (Hz)
ASTM E-90 & E 413
1252505001K2K4KSTC
1B QA-919202333445330

2B Lag

2 Pound per Square Foot

Reinforced Mylar-Faced Vinyl Barrier PDF Spec Sheet: 2B Duct Lagging

Product Data:

  • Nominal Thickness: 1.0″
  • Standard Roll: 48″W x 30’L
  • Weight: 2.2 lb. psf
  • Temperature Range: -20° to +350° F
  • “R” Factor: 4.0
  • Flammability – Class A (or 1) Per ASTM E84
  • Flammability / Smoke Density: 19.5
  • Flammability / Flame Spread: 12.5
  • Easy to cut, wrap and install with matching lag tape

Acoustical Data:

Sound Transmission Loss (dB) Octave & Center Frequencies

2B Lag

ProductOctave Band Frequencies (Hz)
ASTM E-90 & E 413
1252505001K2K4KSTC
2B QA-320232837485632

2B QA-3

2 Pound per Square Foot

Reinforced Foil-Faced Vinyl Barrier Bonded to 1” Thick Quilted Fiberglass Absorber PDF Spec Sheet: 2B QA-3 Duct Lagging

Product Data:

  • Nominal Thickness: 1.0″
  • Standard Roll:  48″W x 30’L
  • Weight: 2.2 lb. psf
  • Temperature Range: -20° to +350° F
  • “R” Factor:  4.0
  • Flammability – Class A (or 1) Per ASTM E84
  • Flammability / Smoke Density: 19.5
  • Flammability / Flame Spread: 12.5
  • Easy to cut, wrap and install with matching lag tape

Acoustical Data:

Sound Transmission Loss (dB) Octave & Center Frequencies

2B QA-3

ProductOctave Band Frequencies (Hz)
ASTM E-90 & E 413
1252505001K2K4KSTC
2B QA-320232837485632

2B QA-9

2 Pound per Square Foot

Reinforced Foil-Faced Vinyl Barrier Bonded to 2” Scrim Faced Quilted Fiberglass. PDF Spec Sheet: 2B QA-9 Duct Lagging

Product Data:

  • Nominal Thickness:  2.0″
  • Standard Roll:  48″W x 30’L
  • Weight: 2.4 lb. psf
  • Temperature Range: -20° to +200° F
  • “R” Factor:  9.0Flammability – Class A (or 1) Per ASTM E84
  • Flammability / Smoke Density: 19.5
  • Flammability / Flame Spread: 12.5
  • Easy to cut, wrap and install with matching lag tape
  • 100% adhesion between barrier and quilt

Acoustical Data:

Sound Transmission Loss (dB) Octave & Center Frequencies

2B QA-9

ProductOctave Band Frequencies (Hz)
ASTM E-90 & E 413
1252505001K2K4KSTC
2B QA-921243041545834