Roxul exterior insulation delivers high-performance thermal protection designed for demanding weather conditions. This mineral wool system supports energy efficiency while protecting building facades against moisture and temperature swings.
Architects and builders favor Roxul exterior insulation for its fire resistance, dimensional stability, and compatibility with various cladding choices. The following sections detail its thermal behavior, installation methods, and long-term durability.
| Product Line | Primary Material | Fire Rating | Typical Thickness Range (mm) |
|---|---|---|---|
| Roxul ComfortBoard IS 120 | Stone wool | A1 non-combustible | 80–160 |
| Roxul ComfortBoard IS 150 | Stone wool | A1 non-combustible | 100–200 |
| Roxul Safeboard IS 400 | Stone wool | A1 non-combustible | 160–320 |
| Roxul Acoustic Sandwich | Stone wool | A1 non-combustible | 50–100 core insulation |
Thermal Performance and U-Value Optimization
Roxul exterior insulation is engineered to maintain consistent thermal resistance across a wide temperature range. The mineral wool core minimizes heat transfer, allowing designers to meet demanding energy codes without increasing wall thickness.
Moisture Management and Drainage Design
Facade Compatibility and Cladding Options
Installation Process and On-Site Handling
Design Guidelines and Best Practices
- Verify local code requirements for fire separation and smoke control around insulation thickness transitions.
- Select compressive strength and density grades that match substrate deflection limits and anchor specifications.
- Detail continuous insulation layers to minimize thermal bridging at balconies, corners, and penetrations.
- Coordinate with drainage mat specifications to preserve airflow and drying capacity behind the cladding.
- Plan access paths and tooling for installers to ensure consistent mortar beds and fastener torque.
FAQ
Reader questions
How does Roxul exterior insulation compare to EPS in terms of fire resistance?
Roxul mineral wool achieves A1 non-combustible classification, whereas standard EPS boards are typically limited to lower reaction-to-fire classes.
Can Roxul be used in rainscreen applications at high floors?
Yes, the boards maintain dimensional stability under wind loads and suit tall facade installations when paired with appropriate mechanical fixings.
What maintenance is required after installing Roxul exterior insulation?
Ongoing maintenance is minimal; periodic inspection of flashings and cladding joints ensures long-term drainage and airtightness.
Does mineral wool insulation produce off-gassing or odors during installation?
Roxul products are designed to have low volatile organic compound emissions, and any initial odor typically dissipates quickly after placement.