We offer the following cases:

On top of the metal frame, trapezoidal sheet, as a support to 6 cm concrete. The sheet itself has a 0,3 mm thickness, and can withstand a load of 450 kg/m2.
Over the concrete, asphalt hydro insulation sheet, 3,5 kg/m2.
On top and below the metal frame, double layer of fire-resistant gypsum board, to protect the frame from fire.
Within the height of the metal structure, insulation with double layer of rockwool KNAUF with ECOSE Technology TP 138 thickness 8,5 cm each.
Vapor barrier and air barrier membranes for air and water protection.
Tile roof insulation
Typical construction of a tiled roof
The roof is covered either with roof tiles, or with a roof panel.
Two layers of fireproof gypsum boards on top and bottom will protect the metal structure from fire.
Within the height of the metal structure, insulation with a double layer of rockwool KNAUF with ECOSE Technology TP 138 thickness 8,5 cm each.