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Fiberglass IQ Board (1" - 4" Thick Lightweight Semi-Rigid 850ºF Fiberglass Insulation Board)

Fiberglas® Insul-Quick® Insulation is a lightweight insulation composed of glass fibers bonded together in a semi-rigid, boardlike form with a special high temperature binder.

Specifications  · Physical Properties  · Thermal Conductivity  · Uses  · Features and Benefits  · Application Recommendations  · Specification Compliance



24 x 48 in
36 x 48
48 x 48
48 x 96
0.6 x 1.2
0.9 x 1.2
1.2 x 1.2
1.2 x 2.4


1 in. through 4 in. (1/2 in. increments)
25 mm through 102 mm (13 mm increments)

Physical Properties

Hot Surface Performance

Up to 850 ºF (454 ºC) Maximum thickness 6" (152 mm)
Up to 650 ºF (343 ºC) Maximum thickness 8" (203 mm)

Compressive Strength at 10% Deformation

90 lb/ft²

Compressive Strength at 20% Deformation

130 lb/ft²

Nominal Density

3.0 lb/ft³

Water Vapor Sorption

< 2.0% by weight, at 120 ºF (49 ºC), 95% R.H.

Shot Content


Composite Surface Burning Characteristics

Flame spread - 25
Smoke developed - 50

Thermal Conductivity

Thermal Conductivity at 75ºF

0.230 BTU-in/hr-ft²-ºF

Thermal Conductivity at 100ºF

0.24 BTU-in/hr-ft²-ºF

Thermal Conductivity at 200ºF

0.30 BTU-in/hr-ft²-ºF

Thermal Conductivity at 300ºF

0.37 BTU-in/hr-ft²-ºF

Thermal Conductivity at 400ºF

0.45 BTU-in/hr-ft²-ºF

Thermal Conductivity at 500ºF

0.58 BTU-in/hr-ft²-ºF

Thermal Conductivity at 25ºC

0.033 W/m-ºC

Thermal Conductivity at 50ºC

0.037 W/m-ºC

Thermal Conductivity at 100ºC

0.045 W/m-ºC

Thermal Conductivity at 150ºC

0.054 W/m-ºC

Thermal Conductivity at 200ºC

0.066 W/m-ºK

Thermal Conductivity at 250ºC

0.081 W/m-ºC

Fiberglas Insul-Quick Insulation is designed for use on power and process boilers, breechings, ducts, precipitators, chimney liners and other heated equipment operating at temperatures up to 850ºF (454ºC). It is used in applications where an outside facing of metal or metal mesh with a finishing cement is required. It can also be used as insulation in a metal panel system.

Features and Benefits
Thermal Efficiency
Its consistent fibrous glass composition enables Fiberglas Insul-Quick Insulation to help conserve energy and lower costly heat loss.

Lightweight Fiberglas Insul-Quick Insulation is easy to handle and install, even when large size boards are used. There's no tendency for pin-holes to become elongated in vibration situations; this eliminates a major source of heat leaks.

No Crumbling, Breaking, Slumping
Fiberglas Insul-Quick Insulation is easy to handle because it. won't crumble or break during installation. It cuts cleanly and easily It resists tearing and pulling apart, which contributes to excellent long-term installed thermal performance.

Large Size Availability
Boards in sizes to 4 by 8 ft. (1.2m x 2.4m) help reduce the number of joints, speeding installation and eliminating potential sources of heat leakage. This feature helps improve installed cost.

Application Recommendations
Fiberglas Insul-Quick Insulation is used in panel systems. It is secured to the panel using pins and clips with metal mesh. Panels can be erected flush to heated surfaces or away from them and secured to buckstays or breeching and ductwork angle iron stiffeners.
Fiberglas Insul-Quick Insulation can be installed directly to hot, flat or curved surfaces. It can be attached using welded pins or studs and finished with sheet metal, or using metal mesh and insulating cement, then canvassed and painted. Pins with speed washer or studs and nuts should be installed on 12" (300 mm) x 18" (450 mm) (approx.) centers and the insulation impaled over them. The sheet metal or metal mesh is secured to the same fasteners Joints of the sheet metal are offset from joints of the insulation.
For temperatures over 400ºF (204ºC), good practice suggests double layer application. Regardless of insulation type single layer installation requires good workmanship to minimize heat loss and hot spots at insulation joints.
Fiberglas Insul-Quick Insulation may be installed in either single or multiple layers up to a maximum of 6" (152mm) at all temperature up to 850ºF (454ºC). or to a maximum of 8" (203 mm) at temperatures not over 650ºF (343ºC).

Specification Compliance
  • ASTM C 612, Mineral Fiber Block & Board Thermal Insulation, Types IA, IB, II
  • ASTM C 795, Thermal Insulation for Use Over Austenitic Stainless Steel (Preproduction qualification testing complete and on file. Chemical analysis of each production lot required for total conformance.)
  • Mil Spec: MIL-I-24244C. Insulation Materials. Social Requirements. Types XVI, XVIa (Preproduction qualification testing complete and on file. Chemical analysis of each production lot required for total conformance.)
  • Nuclear Regulatory Commission Guide 1.36, Non-Metallic Thermal Insulation (Preproduction qualification testing complete and on file. Chemical analysis of each production lot required for total conformance.)
  • U. S. Coast Guard Approval No. 164 009, Noncombustible Materials
  • CAN/CGSB-51.10- type 1, Class 1


    ·  Thermal Performance, ASTM C 680

    ·  Thermal Conductivity

    ·  Application


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