Panel Deck FSK-25

Filter Products By
  • Properties
  • Construction
  • Application Areas
Ideal for specialty applications, Johns Manville Panel Deck FSK-25 batts are laminated with a foil facing for excellent fire resistance and a vapor barrier.

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 speciality commercial applications. This product is designed with a foil facer that can be left exposed where codes permit.

Panel Deck FSK-25 & PSK Faced Batts190x122

Note: Color of product may differ based on the manufacturing location.


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.

  ASTM Standards   ASTM C665   Type III, Class A, Category I
  Flame Spread   ASTM E84   ≤ 25
  Smoke Development   ASTM E84   ≤ 50
  Water Vapor Permeance Facing   ASTM E96   0.05 Perms (3 ng/Pa-s-m2)
  Water Vapor Sorption   ASTM C1104   5% or less by weight
  Odor Emission   ASTM C1304   Pass
  Corrosiveness   ASTM 665   Pass
  Fungi Resistance   ASTM C1388   Pass

Data Sheet

Panel Deck FSK-25


Panel Deck FSK-25
Panel Deck FSK-25 (ES)


Product Selector Guide

Certifications and Specifications

Fiberglass Batts EDP


Limited Warranty

Available Documents