R-14 Johns Manville Fiberglass 3-1/2
Vendor: Johns Manville
FEATURES
- Effective resistance to heat transfer, with RSI/R-values up to RSI 4.9 (R-28) for wood stud and RSI 7.0 (R-50) for metal stud.
- Will not off-gas formaldehyde in the indoor environment.
- Reduces sound transmission through exterior and interior walls, floor and ceiling assemblies.
- Flame Spread of 10 or less and Smoke Developed of 50 or less.
- No rotting, mildew or deterioration. Also noncorrosive to pipes, wiring and metal studs.
- Stable bonded glass fibres will not slump within the wall cavity, settle or break down during normal applications.
Last Modified: 2026-05-23
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Product Variations
| SKU | SKU / PART # | PRODUCT NAME | DIMENSIONS | SF / BAG | QTY | Add to Cart |
|---|---|---|---|---|---|---|
41030025 | R14- 3.5" X 15" JM (78.33 SF) |
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NS-JMR1423 | R14- 3.5" X 23" JM (120.11 SF) |
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