Lithos 5
Mineral wool fire-rated roof panel · 5 trapezoidal ribs, 40 mm high, 250 mm module · 50–200 mm · Mineral wool
A2-s1,d0REI120Solar-ready
View Lithos 5 Fire-rated mineral wool sandwich panels
Rockwool and glass wool sandwich panels for buildings that need a non-combustible envelope: A2-s1,d0 reaction to fire on every product, EI180 walls (Fibermet), REI120 roofs (Lithos 5), and micro-perforated versions for sound absorption. For architects, fire consultants and main contractors.
A2-s1,d0all six products
EI180Fibermet wall
REI120Lithos 5 roof
All fire-rated mineral wool sandwich panels products
Fibermet
Mineral wool fire-rated wall panel · visible fix, seamless joint · 50–200 mm · Mineral wool
A2-s1,d0EI180
View Fibermet 
Fiberstar
Mineral wool wall panel, hidden fixing · concealed fix · 80–200 mm · Mineral wool
A2-s1,d0EI90
View Fiberstar 
Lithos 5 G
Glass wool roof panel · 5 trapezoidal ribs · 50–200 mm · Glass wool
A2-s1,d0
View Lithos 5 G 
Fibermet G
Glass wool wall panel · visible fix · 50–200 mm · Glass wool
A2-s1,d0EI45
View Fibermet G 
Fiberstar G
Glass wool wall panel, hidden fixing · concealed fix · 50–200 mm · Glass wool
A2-s1,d0
View Fiberstar G Compare the range
Declared values from manufacturer datasheets to EN 14509 and EN 13501. A dash means no rating is published.
| Product | Type | Core | Thickness | U @ 100 mm | Reaction to fire | Fire resistance | External fire |
|---|---|---|---|---|---|---|---|
| Lithos 5 | Mineral wool fire-rated roof panel | Mineral wool | 50–200 mm | 0.39 | A2-s1,d0 | REI120 | BRoof(cwft) |
| Fibermet | Mineral wool fire-rated wall panel | Mineral wool | 50–200 mm | 0.38 | A2-s1,d0 | EI180 | – |
| Fiberstar | Mineral wool wall panel, hidden fixing | Mineral wool | 80–200 mm | 0.40 | A2-s1,d0 | EI90 | – |
| Lithos 5 G | Glass wool roof panel | Glass wool | 50–200 mm | 0.38 | A2-s1,d0 | – | – |
| Fibermet G | Glass wool wall panel | Glass wool | 50–200 mm | 0.37 | A2-s1,d0 | EI45 | – |
| Fiberstar G | Glass wool wall panel, hidden fixing | Glass wool | 50–200 mm | 0.40 | A2-s1,d0 | – | – |
Which one do I need?
Not sure? Send us the span, the use and the county and we will spec it. No charge.
Get a quote- Compartment wall needing EI120 or more
- Fibermet at 100 mm+ (EI120 to 7.5 m span, EI180 to 4 m)
- Roof needing REI
- Lithos 5 at 100 mm+ (REI120)
- Noise: plant rooms, sports halls
- Lithos 5 or Fibermet micro-perforated (α up to 0.95)
- Non-combustible with the best U-value per mm
- Glass wool: Lithos 5 G, Fibermet G, Fiberstar G (λ 0.039)
Certifications on this range
Reaction to fire (EN 13501-1), fire resistance (EN 13501-2), external fire (EN 13501-5), EPD type III and CE marking. Classes depend on core and thickness and are confirmed at order.
Full certification tablesFire-rated mineral wool sandwich panels questions
Are the micro-perforated versions also A2-s1,d0?
No. The A2-s1,d0 reaction to fire is for the standard versions; micro-perforated versions are the acoustic option and are certified separately for fire resistance.
How heavy are mineral wool panels?
Noticeably heavier than PIR panels, so panel lengths should be sized for handling; we will check it on your quote.