Manufactured from inorganic fibers derived from volcanic rock, Johns Manville CladStone™ Water & Fire Block Insulation is inorganic, noncombustible, moisture repellent and will not mildew or support corrosion.

Johns Manville CladStone™ Water & Fire Block insulation is manufactured from inorganic fibers derived from volcanic rock. Advanced manufacturing technology ensures consistent product quality, with high-fiber density and low shot content for excellent performance. Noncombustible, with water-repellent properties, it is ideal for wall cavity and rainscreen applications.

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Advantages
Water-Repellent: Repels water to ensure drainage when applied as part of a proper exterior wall cavity system.
Fire-Resistant: Melting point in excess of 2000˚F (1093˚C). Flame Spread of 0 and Smoke Developed of 0.
Durable Inorganic Glass: No growth of fungi. No sustaining of vermin.

  ASTM Standards   ASTM C665   Type I
  Thermal Resistance   ASTM C518   R-4.3 per inch
  Flame Spread   ASTM E84   0
  Smoke Development   ASTM E84   0
  Water Vapor Permeance Facing   ASTM E96   Unfaced, 50 perms as tested
  Water Vapor Sorption   ASTM C1104   Absorbs 0.03% by volume
  Odor Emission   ASTM C1304   Pass
  Corrosiveness   ASTM C665   Pass
  Fungi Resistance   ASTM C1338   Pass
  Combustion Characteristics   ASTM E136   Pass
      ASTM C612   Type IA, IB, II, III, IVA
     ASTM C356   Linear shrinkage < 2% 1200° F (650° C) 
     ASTM C1335   Shot content less than 25%

Data Sheet
JM CladStone Water & Fire Block Data Sheet

SDS
JM CladStone Water & Fire Block SDS
JM CladStone Water & Fire Block SDS (ES)

Installation Instructions
JM CladStone Water & Fire Block Installation Instructions

LIMITED WARRANTY
Mineral Wool Limited Warranty

LITERATURE
Product Selector Guide
Mineral Wool Product Comparison Chart
Mineral Wool Competitor Comparison Chart
Mineral Wool 2.0 Sell Sheet

Wall Assemblies
Continuous Insulation for Rain-Screen Cladding Systems - Metal Panel
Continuous Insulation for Rain-Screen Cladding Systems - Fiber Cement Panel
Continuous Insulation for Cavity Wall Systems


JM CladStone Water & Fire Block


JM Mineral Wool


JM Mineral Wool Product Properties


JM Mineral Wool Product Properties
(short version)


JM Overview Video

Available Documents