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SOFTR® DUCT WRAP FRK | Fiberglass Duct Wrap | Owens Corning Insulation

Owens Corning® SOFTR® Duct Wrap is a glass fiber insulation blanket factory-laminated to FRK vapor retarder facing. This fiberglass insulation product wraps around ductwork to help manage heat loss or gain and support condensation control. It is used for external insulation of commercial and residential heating, air-conditioning, and dual-temperature ducts.

Why Choose Fiberglass Duct Wrap:

  • Condensation control
  • Enhanced comfort control
  • Easy to clean surface (Foil Reinforced Kraft (FRK) facing)
  • Flexible and easy to install
Download Data Sheet

Certifications

UL Greenguard Gold

UL Greenguard Gold

Performance Attributes

With a flexible design and a 2” (50mm) stapling and taping flange for easy fastening and sealing, this fiberglass duct wrap insulation installs easily and helps streamline installation. This duct insulation wrap also supports condensation control, helping reduce the risk of mold and water damage. As a dependable fiberglass insulation, it helps maintain consistent air temperatures throughout the system for improved comfort and energy efficiency. This insulation product meets existing performance standards and other mechanical and energy codes.


Easy Installation icon

Easy Installation

Moisture Management icon

Moisture Management

Thermal Comfort icon

Thermal Comfort

Technical Information

PROPERTY

TEST METHOD

VALUE

Operating TemperatureASTM C 411up to 250°F (121°C)
Insulation Jacket Temperature LimitASTM C 1136up to 150°F (66°C)
Jacket Puncture ResistanceASTM C 113625 units (0.7 joules)
Water Vapor PermeanceASTM E 960.02 perms
Water Vapor SorptionASTM C 1104

< 3% by weight at 120°F (49°C), 95% R.H.

Fungi ResistanceASTM C 1338Meets requirements

Thermal Conductivity
Out-of-Package k-Value
k Btu•in/hr•ft2•°F
(λ at 24°C Mean, W/m•°C)

Installed (Compressed) k-Value
k Btu•in/hr•ft2•°F
(λ at 24°C Mean, W/m•°C)

ASTM C 518


Type 75
0.30
(0.043)

Type 75
0.27
(0.039)


Type 100
0.27
(0.039)

Type 100
0.25
(0.036)


Type 150
0.25
(0.036)

Type 150
0.23
(0.033)

Surface Burning Characteristics4
Flame Spread
Smoke Developed

ASTM E 84


25
50

4. The surface burning characteristics of these products have been determined in accordance with ASTM E 84. This standard should be used to measure and describe the properties of materials, products or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use. Values are reported to the nearest 5 rating.

Applications

SOFTR® Duct Wrap FRK is a fiberglass duct wrap insulation designed to wrap around air ducts and related equipment in both residential and commercial buildings. It helps maintain the desired air temperature as heated or cooled air moves through duct systems, acting as an effective HVAC insulation wrap in spaces like attics, basements, and mechanical rooms.

This glass fiber insulation is suitable for a range of HVAC and mechanical applications, including supply and return ductwork; duct fittings such as elbows, takeoffs, reducers, and boots; and equipment surfaces such as air handling units, air handling plenums, metal mixing boxes, and mechanical cabinets. When installed properly, this fiberglass duct wrap delivers the expected insulation performance (R-value). This insulation helps prevent condensation from forming on ducts and equipment, improving energy efficiency and reducing the risk of moisture-related issues.

  • Air Distribution
  • Air Distribution > Air Distribution / HVAC
  • Air Distribution > Air Shafts
  • Air Distribution > Duct Insulation
  • Attics
  • Basements
  • Flatwork
  • Mechanical Pipe and Equipment
  • Mechanical Pipe and Equipment > Mechanical Equipment & Board
  • Pipe and Equipment
  • Pipe and Equipment > Equipment
  • Pipe and Equipment > Equipment > Mechanical Equipment
  • Pipe and Equipment > Equipment > Mechanical Room
  • Pipe and Equipment > Equipment > Ovens, Boilers, and Furnaces
  • Pipe and Equipment > HVAC and Utility Piping
  • Pipe and Equipment > HVAC and Utility Piping > Air Ducts
  • Pipe and Equipment > HVAC and Utility Piping > Air Shafts
  • Pipe and Equipment > Process Piping
  • Pipe and Equipment > Process Piping > Above Ground Piping
  • Pipe and Equipment > Process Piping > Above Ground Piping > Commercial Piping and Ductwork
  • Pipe and Equipment > Process Piping > Above Ground Piping > Steam and Chilled Water Piping
  • Pipe and Equipment > Process Piping > Above Ground Piping > Steam and Chilled Water Piping > Data Centers

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