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Lithos 5 mineral wool fire-rated roof panel
Lithos 5 is a fire-rated mineral wool roof panel: rock wool fibres between two steel skins, rated A2-s1,d0 for reaction to fire. It reaches REI120 fire resistance from 100 mm, REI60 at 80 mm and REI30 at 50 and 60 mm, and is BRoof(cwft) across the range.
- Nationwide delivery
- No minimum order
- Samples available
- Lead time depends on stock
About the Lithos 5 mineral wool roof panel
It comes from 50 to 200 mm thick, with a U-value of 0.20 W/m²K at 200 mm. A micro-perforated version absorbs sound, with absorption up to 0.95, for noisy industrial spaces. Mineral wool panels are heavy, so panel lengths are sized for handling at quote stage.
Specification
Size and profile
- Cover width
- 1000 mm
- Length
- Made to length from continuous production.
- Thicknesses
- 50 · 60 · 80 · 100 · 120 · 150 · 200 mm
- Profile
- 5 trapezoidal ribs, 40 mm high, 250 mm module
Core and joint
- Core
- High-density mineral (rock) wool, fibres arranged perpendicular to the facings. λ = 0.040 W/mK.
- Joint
- Rigid, high thermal-break joint; no plastic joint pieces needed; expanded gasket in critical cases.
- Manufacturer
- Isolpack S.p.A., Italy · product code L1
Facings and coatings
- Facings
- Pre-painted or plasticised galvanised steel · Stainless steel · Natural, pre-painted or embossed aluminium · Copper
- Coatings
- Polyester, Superpolyester (HD), PVDF, polyurethane PUR/PA, 15–55 µm. Other films and food-safe coatings on request.
Non-standard thicknesses on request, subject to minimum quantities.
U-value by thickness
| Thickness | U (W/m²K) |
|---|---|
| 50 mm | 0.74 |
| 60 mm | 0.63 |
| 80 mm | 0.48 |
| 100 mm | 0.39 |
| 120 mm | 0.33 |
| 150 mm | 0.27 |
| 200 mm | 0.20 |
Declared 25-year values to EN 14509 (EN 13165 Annex C), on 0.6 + 0.5 mm steel facings.
Fire certification
| Test | Class | Thicknesses |
|---|---|---|
| Reaction to fire EN 13501-1 · Mineral wool | A2-s1,d0 | 50–200 mm except micro-perforated |
| Fire resistance EN 13501-2 · Mineral wool | REI120 | 100–200 mm |
| Fire resistance EN 13501-2 · Mineral wool | REI60 | 80 mm |
| Fire resistance EN 13501-2 · Mineral wool | REI30 | 50–60 mm |
| Fire resistance EN 13501-2 · Mineral wool | REI120 | 150–200 mm certified as Lithos 5 Microperf. |
| External fire EN 13501-5 · Mineral wool | BRoof(cwft) | 50–200 mm |
Classes are per core and thickness and must be specified at order. The whole range is CE marked with EPD type III (EN ISO 14025) declarations, from an ISO 9001, 14001 and 45001 certified manufacturer.
Acoustic performance (Micro-perforated)
| Thickness | Rw (EN 10140-2) | α (ISO 354) |
|---|---|---|
| 50 mm | 33.6 dB | 0.65 |
| 60 mm | 33.6 dB | 0.65 |
| 80 mm | 33.6 dB | 0.8 |
| 100 mm | 34.7 dB | 0.9 |
| 120 mm | 34.7 dB | 0.9 |
| 150 mm | 34.7 dB | 0.95 |
| 200 mm | 34.7 dB | 0.95 |
Versions
Lithos 5 Micro-perforated: Micro-perforated inner skin for sound absorption; A2-s1,d0 does NOT apply. Datasheet