CladStone Water & Fire Block

JM CladStone Water & Fire Block Mineral Wool

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.

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Data Sheet - CladStone 45

Data Sheet - CladStone 60

Data Sheet - Cladstone Retaining Clips

SDS

Product Guide

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 exterior cavity wall and rainscreen applications. Available in 4 densities, CladStone 45 (4.5pcf), CladStone 60 (6.0 pcf), CladStone 80 (8.0 pcf) and CladStone 110 (11.0 pcf).

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.
Densities: CladStone 45 (4.5pcf), CladStone 60 (6.0 pcf), CladStone 80 (8.0 pcf) and CladStone 110 (11.0 pcf)

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, IVB
	ASTM C356	Linear shrinkage < 2% 1200° F (650° C)
	ASTM C1335	Shot content less than 25%