Earthwool® Insulation Board

Unfaced, ASJ+, FSK

Knauf Insulation Earthwool® Insulation Board is a versatile product for thermal and acoustical applications such as heating and air conditioning ducts, power and process equipment, boiler and stack installation, and more. It is bonded with ECOSE® Technology and is available plain or with a factory applied foil-scrim-kraft (FSK) or all service jacket (ASJ+) facing.

Performance dashboard

Features & functionality

  • Excellent thermal efficiency results in lower operating costs
  • FSK and ASJ+ vapor-retardant facings provide a neat finished appearance in mechanical rooms
  • Low emitting and formaldehyde-free for indoor air quality considerations
  • Excellent acoustical properties effectively reduce noise


Visit Knauf for more product information

Earthwool® Insulation Board unfaced
Earthwool® Insulation Board FSK-faced

Earthwool® Insulation Board ASJ+-faced

Environment & materials

Improved by:

  • Utilization of recycled glass
  • Knauf’s original bio-based ECOSE® Technology binder technology

Certification & rating systems:

  • HPD v2.2 (Unfaced), v2.3 (ASJ+ and FSK)
  • UL GREENGUARD Gold certified
  • UL Validated recycled content
  • UL Validated formaldehyde-free
  • Audited, European Certification Board for Mineral Wool Products exoneration process
  • ASTM C612: Type IA (1.6, 2.25, 3.0, 4.25, 6.0 pcf), Type IB (3.0, 4.25, 6.0 pcf); ASTM C795; ASTM C1136: Type I, II, III, IV, VIII (ASJ+), Type II, IV (FSK)

Earthwool® Insulation Board Guide Spec, Technical Data Sheet
For spec help, contact us or call 317 421 8727