Coverib 850

Trapezoidal profile, made of multilayer protection steel.

Coverib 850 allows ample versatility of use; it guarantees excellent thermal and acoustic insulation as well as high mechanical strength.

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Main advantages


High resistance

to corrosion







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Coverib 850 technical performance

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Reliability, versatility and design freedom

Coverib 850

Technical data sheet

Find out all the compatible finishes and accessories in the dedicated section or downloading the available materials.

Available finishing

B – Blue, D – Slate Grey RAL 7012, GR – Grey RAL 7023, VM – Medium Green Pantone 378c, W – Off White RAL 9002, N – Natural Alluminium, R – Red, S – Oxide Red RAL 3009, T – Terracotta RAL 8004, Q – Patina Green, C – Electrolytic Copper

Available processes






Coverib 850 Multilayer metal sheet with trapezoidal profile, CE marked according to UNI EN 14782. Appendix A: complies with UNI EN 508-1 Appendix B: consisting of a structural galvanized steel sheet (EN 10346) with a thickness of 0,60 mm (ie mm 0,50 or 0,80) protected in the upper face by an anticorrosive and soundproofing thermoplastic coating (about 1.5 mm thick) and by a natural aluminum foil (or pre-painted aluminum, or electrolytic copper), and in the lower face by a primer and a natural aluminum foil (or prepainted aluminum).

The external layers wrap the side edges of the sheets along the entire length to guarantee their full protection. To ensure the characteristics stability P= 300 performances over time, the protection with anticorrosive and soundproofing function, has a thickness of about 1.5 mm and it is positioned on the extrados of the sheet.


The cover element ensures the following performance requirements:


Concentrated loads resistance:

Steel thickness 0,5: 1,2Ln Lu kN = 1000 span 1,80 m; Steel thickness 0,6: 1,2 kN span 2,30 m;

LnLukN = 1000 span 1,80 m; Steel thickness 0,6: 1,2 kN span 2,30 m; Steel thickness 0,8: 1,2 kN spani 2,60 m

(EN 14782 Appendice B)

Reaction to fire::

Class B-s1, d0 (UNI EN 13501-1; EN 13823; EN ISO 11925-2)

Performances to external fire:

Class BRoof T3 (UNI EN 13501-5; UNI CEN/TS 1187)

Durability – Salt spray resistance:

4000 hours (UNI EN 14782 – Appendix A; ISO 9227)

Durability – Humidity resistance:

3000 hours (UNI EN 14782 – Appendix A; EN ISO 6270-1)

Durability – SO2 resistance:

45 cycles (UNI EN 14782 – Appendix A; EN ISO 6988)

Sound insulation:

28 dB (UNI EN ISO 140-3)

Potere fonoisolante:

28 dB (UNI EN ISO 10140-2:2010)

Sound deadening – noise generated by driving rain:

ISTEDIL cert. N°1302/202-G 1302/202-C

8,41 times higher than a mm Lu = 0,7 785 mm thick aluminium sheet

4,17 times higher than a sandwich panel with 40 mm insulation

52,3 dB UNI EN ISO 140-18

Solar Reflectance Index (SRI):

Natural aluminium surfacing (N)107%; Off White RAL 9002 (W) 73,0%; Grey RAL 7023 (GR) 42,6%; Terracotta RAL 8004 (T) 37,6%; Blue (B) 37,3 %; Medium Green, (VM) 35,6%; Red RAL 8016 (R) 35,2%; Slate Grey RAL 7012 (D) 34,3%; Oxide Red RAL 3009 (S) 33,4%; (ASTM E1980-11).

1,07 W/m 2 K (ISO 6946) with natural aluminium lower surfacing