ROXUL Safe® 45
ROXUL Safe® 45 is a stone wool insulation board that is specifically engineered as a fire block material for concealed spaces of multi-unit residential buildings.
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Popular applications
- Interior insulation
- Separating party wall insulation
About this product
ROCKWOOL ROXUL Safe® 45 is a stone wool insulation board specifically engineered as a fire-blocking material for concealed spaces of multi-unit residential buildings.
Using ROXUL Safe 45 with ROCKWOOL Comfortbatt insulation creates a high-density “party” wall system that improves sound dampening and fire performance. It also reduces the time, labor and material costs usually associated with adding a double layer of gypsum over the wall studs.
- Noncombustible and fire resistant
- Excellent acoustic performance
- Dimensionally Stable
- Water and moisture repellent
- Inorganic, does not promote mold growth
Why use stone wool insulation
- Noncombustible and fire resistant, stone wool works to contain a fire and prevent its spread.
- Provides excellent noise reduction and sound absorption to help you create quieter, more productive environments.
- Lightweight and easy to install.
- Water resistant, stone wool does not rot or promote the growth of mildew, fungi or mold.
Applications
- Designed as a fireblocking material in concealed spaces
- Specifically engineered for Article 3.1.11.2 of the National Building Code of Canada
- Assembly solutions in multi-unit residential construction
Product certificates
ROXUL Safe® 45 sizes, dimensions & packaging
Find ROXUL Safe® 45 thickness, width, length and pack quantities—everything you need for accurate specification and ordering.
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Specifications & testing
Explore ROXUL Safe® 45 specifications and test results, based on relevant industry standards.
| Name | Value | Unit | Test standard |
|---|---|---|---|
| Mineral Fiber Block and Board Thermal Insulation | Type IVA Compliant | ASTM C612 | |
| Mineral Fiber Thermal Insulation for Buildings | Type 1 Compliant | CAN/ULC S702 | |
| Flame spread index | 0 | ASTM E84 | |
| Smoke Developed Index | 0 | ASTM E84 | |
| Combustibility of Materials at 750 °C | Non-combustible | ASTM E136 | |
| Determination of Non Combustibility of Building Materials | Non-combustible | CAN/ULC S114 | |
| Corrosion of Steel | Passed | ASTM C665 | |
| Density | 4.4 | lbs/ft3 | ASTM C167 |
| Density | 70 | kg/m3 | ASTM C167 |
| R-Value / inch @ 75 °F | 4.2 | hr.ft².F/Btu | ASTM C518 (C177) |
| RSI value / 25.4 mm @ 24 °C | 0.74 | m²K/W | ASTM C518 (C177) |
| Determination of Fungi Resistance | Passed | ASTM C1338 |
ROXUL Safe® 45 technical documents & resources
Download ROXUL Safe® 45 technical documents and resources, including the product data sheet, to support accurate specification and efficient project planning.
ROCKWOOL ROXUL safe application guide
ROXUL Safe 45 residential party wall insulation - Data sheet
Guidelines for cutting stone wool insulation
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