The assembly of sandwich panels requires precise technical planning to ensure that the insulation and airtightness properties remain intact. From material reception to final finishing, each step influences the structural and thermal performance of the building. Following a rigorous protocol avoids common pathologies such as leaks or aesthetic deformations in the facade or roof.
On-site logistics and materials management
Proper handling of the bundles is the first step in avoiding damage to the outer coatings. Depending on the length of the pieces, unloading methods vary to ensure the integrity of the insulation core.
- Pieces up to 6 meters: They can be unloaded manually or with a forklift, adjusting the forks to a minimum separation of 2 meters to distribute the weight.
- Long pieces (more than 6 meters): The use of conveyor belts and distribution rockers is mandatory to avoid excessive bending of the material.
- Surface protection: The protective film should be removed just prior to the installation of each panel. It is not recommended to leave it on after installation, as the sun can permanently adhere to it.
Phases of the assembly process
| Stage | Key Action | Target |
| Verification | Leveling control of the structure | Avoiding the “wave effect” and leaks |
| Pre-sealing | Application of PES tapes | Prevent thermal bridges and friction |
| Fixing | Use of through-core fasteners | Ensuring mechanical stability |
| Battery | Placement of joints and corner pieces | Watertightness and aesthetic finish |
Technical execution and precision cutting
Installation should begin after checking that the supporting structure is perfectly aligned. Sealing tapes are installed at the contact points between the panel and the structure to avoid friction wear and improve insulation. For lifting the parts, the most efficient and safe method is the use of vacuum suction cups.
During the process, dimensional adjustments are often required. Cold cutting tools, such as jigsaws or metal-specific circular saws, should be used to cut the panels. The use of angle grinders (radial grinders) is strictly forbidden, as the heat generated destroys the anti-corrosion coating of the steel and can project sparks into the flammable core.
Sealing and additional elements
When joining consecutive panels, it is essential to exert adequate pressure so that the joints fit tightly, eliminating any thermal bridging. In joints where there are no mechanical fasteners, such as horizontal joints or joints between wall and ceiling, the watertightness should be reinforced with low-pressure polyurethane foam or butyl mastic.
For the installation of light elements on the already mounted panel, such as surveillance cameras or lighting, the load should not exceed 10 kg/m2. It is mandatory that the fasteners go through both panel sheets and use load distribution washers of at least 40 mm to spread the pressure over the surface and avoid dents in the cladding.
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