A lightweight and efficient solution for modern roofs
In recent years, sandwich panels for roofing have become one of the most widely used construction solutions in industrial and commercial buildings, as well as in refurbishment projects. Their ability to integrate structure, insulation and external finish into a single element simplifies the roof build-up while improving its overall energy performance.
These systems are particularly suitable for projects where reducing roof weight, shortening construction times or improving thermal insulation is required without increasing construction complexity.
In areas with high refurbishment activity such as Mallorca, lightweight roofs using sandwich panels are increasingly used in both existing buildings and new developments for industrial, commercial and tertiary uses.
What is a sandwich panel for roofing?
A sandwich panel for roofing is a prefabricated construction element made up of several layers working together to provide structural strength, thermal insulation and weather protection.
In refurbishment or new-build solutions for traditional clay tile roofs, the system typically consists of a moisture-resistant board, high-performance insulation such as PIR (with very low thermal conductivity) or XPS, and an internal finish generally made of plasterboard.
In addition, the system is complemented by an ONDULINE UNDER-TILE waterproofing sheet (such as the BT 150 Plus), creating a complete roofing system supported by a European Technical Assessment (ETA).
Thanks to this multilayer configuration, sandwich panels offer an excellent balance between weight, structural performance and insulation capacity.
Advantages of sandwich panel roofing systems
The use of sandwich panels in roofing provides several advantages compared to traditional tile-based systems or more complex multi-layer solutions.
Fast installation
As a prefabricated element, sandwich panels allow large roof areas to be installed much faster than traditional systems, reducing construction time and simplifying execution.
Reduced structural load
Lightweight sandwich panel roofs place less load on the building structure. This is particularly advantageous in refurbishment projects where the existing structure may have load limitations.
Good thermal performance
The insulating core improves the building’s thermal behaviour, reducing heat loss through the roof and enhancing indoor comfort.
Simplified construction system
By integrating multiple functions into a single element, sandwich panels reduce the number of layers required in the roof build-up, facilitating installation and quality control.
Typical applications of sandwich panels in roofing
Sandwich panels are widely used across different building types due to their versatility and ease of installation.
Refurbishment of existing roofs
In refurbishment projects, sandwich panels allow deteriorated roofs to be upgraded without fully dismantling the existing structure. Their lightweight nature reduces intervention complexity and minimises disruption.
Industrial buildings
Sandwich panel roofs are commonly used in industrial facilities, warehouses and agricultural buildings, where large roof spans must be installed quickly and with good thermal performance.
Residential and tiled roof buildings
The use of sandwich panels is becoming increasingly common in residential and tertiary buildings with traditional tiled roof finishes and exposed timber joists.
This solution combines high thermal insulation, lightness and fast installation while maintaining a traditional aesthetic highly valued in architectural design.
Lightweight roofing systems and Onduline solutions
There are various construction systems based on lightweight solutions for pitched roofs. Among them, those developed by specialised manufacturers such as Onduline in Mallorca stand out, combining waterproofing, ventilation and structural support within a single system.
These systems improve the performance of existing roofs and enhance durability, particularly in refurbishment projects.
For specific projects, there are tailored lightweight roofing systems in Mallorca that integrate waterproofing, ventilation and structural support.
These solutions are commonly used in both refurbishment and new construction projects across the island.
Technical factors to consider in sandwich panel roof design
Before selecting a lightweight roofing system, several technical aspects should be assessed.
The type of supporting structure, roof pitch and wind exposure all directly influence the choice of system.
Particular attention should also be paid to junctions, detailing and drainage systems, as these elements are critical to ensuring long-term durability.
Proper technical specification allows the full benefits of sandwich panels to be achieved while ensuring reliable roof performance over time.
Sandwich panels and energy-efficient roof refurbishment
Improving the energy efficiency of buildings has driven the adoption of construction systems that integrate insulation directly into the roof assembly.
Sandwich panel roofing systems enhance building energy performance by incorporating insulating materials within the panel itself. This helps reduce heat loss and improve indoor thermal comfort.
In energy refurbishment projects, these systems provide an effective solution for upgrading existing roofs without significantly increasing structural load.
Conclusion
Sandwich panels for roofing have become an efficient construction solution for industrial, commercial and refurbishment projects. Their light weight, fast installation and strong thermal performance make them a widely used option in contemporary construction.
At Polivas, we work with technical roofing solutions and construction systems tailored to the needs of architects, contractors and developers working on projects in Mallorca.
By combining high-quality materials with proven construction systems, it is possible to deliver roofs that are more efficient, durable and aligned with current building requirements.