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MinWool Safing
MinWool Safing
Johns Manville MinWool® Safing is available plain or with a foil facing vapor retarder on one face. Nonorganic and moisture-resistant, MinWool Safing prevents smoke and flames from passing through openings in fire-rated assemblies. It is designed to provide a fire-rated seal when installed between the spandrel panel and floor slab in commercial curtainwall systems.
Advantages
Fire-Resistant: Melting point in excess of 2000˚F (1093˚C). Unfaced: Flame Spread of 0 and Smoke Developed of 0. Faced: Flame Spread of 25 or less and Smoke Developed of 5 or less.
Durable Inorganic Glass: No growth of fungi. No sustaining of vermin.
| ASTM Standards | ASTM C665 | Unfaced: Type I Faced: Type III, Class A, Category 1 |
| Flame Spread | ASTM E84 | Unfaced: 0 Faced: ≤ 25 |
| Smoke Development | ASTM E84 | Unfaced: 0 Faced: ≤ 5 |
| Water Vapor Permeance Facing | ASTM E96 | 0.02 perms, maximum |
| Water Vapor Sorption | ASTM C1104 | < 1% by weight; < 0.2% by volume at 120ºF (49ºC), 95% RH |
| Odor Emission | ASTM C1304 | Pass |
| Corrosiveness | ASTM C665 | Pass |
| Fungi Resistance | ASTM C1338 | Pass |
| Combustion Characteristics | ASTM E136 | Pass |
| ASTM C612 | Type 1–4 |
Limited Warranty
Literature
Product Selector Guide
Mineral Wool Product Comparison Chart
Mineral Wool 2.0 Sell Sheet
JM Mineral Wool
JM Overview Video
JM Mineral Wool Product Properties
(short version)
JM Mineral Wool Product Properties
