Double-layer ceiling sandwich panels are produced with a thickness of 40 to 80 mm, with rigid polyurethane injection foam (density 2+-40 kg/m3). This type of sandwich panel is resistant to plant and fungal growth and has a low thermal conductivity. The initial width of the ceiling panel is 1070 mm and its useful width and final ceiling covering is 1000 mm. The outer layers of the ceiling sandwich panels can be made of aluminum, color galvanized and aluzinc.
| Specification table for 5-step double-layer sandwich panel ceiling with polyurethane foam | ||||
| Sandwich panel thickness | 40 mm | 50 mm | 60 mm | 80 mm |
| Thermal conductivity (w/m) | 45 hundredths | 34 hundredths | 28 hundredths | 23 hundredths |
| Fire resistance class | B2 | |||
| Sound reduction | Minimum 16DB | |||
| Panel width (useful width) | 1000 mm | |||
| Sandwich panel length | Minimum 2 meters, maximum 14 meters | |||
| Distributed load bearing table for 5-step double-layer sandwich panel roof with polyurethane foam | ||||||||
| Insulation thickness (MM) | Outer sheet thickness (MM) | Inner sheet thickness (MM) | Distance between openings (MM) | |||||
| 1000 | 1500 | 2000 | 2500 | 3000 | ||||
| 40 | 50 cents | 40 hundredths | 366 | 204 | 142 | 109 | 86 | |
| 50 | 50 cents | 40 hundredths | 455 | 260 | 183 | 142 | 102 | |
| 60 | 50 cents | 40 hundredths | 524 | 306 | 218 | 169 | 119 | |
| 80 | 50 cents | 40 hundredths | 631 | 381 | 276 | 241 | 152 | |
