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Panel Deck FSK-25 Fiberglass Insulation

Panel Deck FSK-25 Fiberglass Insulation

Johns Manville Panel Deck FSK-25 Formaldehyde-Free™ thermal and acoustical insulation is available in R-Values up to R-30 and combines fire resistance with an excellent vapor retarder. Panel Deck FSK-25 insulation is offered in precut batts with extra-wide tabs for modular roof deck applications and other specialty commercial applications. This product is designed with a foil facer that can be left exposed where codes permit.

FEATURES:

  • Thermally Efficient - Effective resistance to heat transfer, with R-values up to R-30.
  • Formaldehyde-Free - Will not off-gas formaldehyde in the indoor environment.
  • Sound Control - Reduces sound transmission through exterior and interior walls, floor and ceiling assemblies.
  • Fire-Resistant - Flame Spread of 25 or less and Smoke Developed of 50 or less. Can be left exposed where building codes permit.
  • Resilient Inorganic Glass - No rotting, mildew or deterioration. Also noncorrosive to pipes, wiring and metal studs.
  • Superior Performance - Stable bonded glass fibers will not slump, settle or break down during normal applications.

AVAILABLE FORMS:

  • Pre-cut batts

PERFORMANCE ADVANTAGES:

  • Formaldehyde-free: will not off-gas formaldehyde in the indoor environment.
  • Thermally Efficient: provides effective resistance to heat transfer with R-values up to R-30 (RSI-5.3).
  • Sound Control: reduces transmission of sound through exterior and interior walls and floor or ceiling assemblies.
  • Fire Resistant: see Physical Properties.
  • Durable Inorganic Glass: will not rot, mildew or deteriorate and is noncorrosive to pipes, wiring and metal studs.
  • Superior Performance: bonded glass fibers are dimensionally stable and will not slump within the wall cavity, settle or break down during normal applications.
Specification
  • USE:

    • 2' x 4' (0.61 m x 1.22 m) modular roof construction – commercial buildings
    • Building systems where extended tabs assist in application
Technical specification
  • Unique ref.panel-deck-fsk-25-fiberglass-insulation
  • Product familyBuilding Materials
  • Product groupInsulation
  • TypeObject (single object)
  • Date of publishing2026-07-15
  • Edition number1
Related
  • Designed inUnited States
  • Manufactured inUnited States
Classification
  • BIMobject CategoryBuilding Materials - Insulation

Region availability

North America
Anguilla
Antigua and Barbuda
Aruba
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Caribbean Netherlands
Cayman Islands
Collectivity of Saint Martin
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States
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