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SANDWICH PANEL FAQ
Answers to the most common questions about panel types, thicknesses, insulation, installation, fixings, prices, transport and assembly. Browse answers by topic or go directly to the section you need.
REFERENCE GUIDE
Questions are organised by topic to help with panel selection, installation planning and budget preparation.
Types, applications and thicknesses.
Insulation, acoustics, fire and condensation.
Structure, slope, fixings and trims.
Dimensions, transport, installation and quotation.
PANEL SELECTION
Types, uses and thicknesses: the most common questions before buying.
It is a prefabricated building element usually formed by two metal sheets and an insulating core. Depending on the range, the core may be PUR, PIR or rockwool. The combination allows cladding and insulation to be resolved in a single piece, although final performance depends on the model, thickness, joints and installation.
The main types are roofing panel, facade panel, tile-effect panel, refrigerator panel, farm panel and rockwool core panel. There are also different profiles, finishes, colours and fixing systems.
The roofing panel is designed to work on sloped surfaces and evacuate water through its outer profile and joints. The facade panel is intended for vertical cladding and may incorporate visible or concealed fixings. Each product must be used in accordance with its technical documentation.
It depends on the use: roofing, facade, cold room, farm, dwelling or industrial building. Insulation, fire behaviour, acoustics, exposure environment, separation between supports, finish and project requirements must also be reviewed.
Thickness must be chosen according to the required insulation, loads, separation between supports and building use. There is no universal thickness: the technical data sheet and thermal transmittance of the specific model should be checked.
PERFORMANCE
Compare performance always using the technical documentation of the specific product.
PUR and PIR are rigid foams with good thermal performance. Rockwool is a mineral insulation especially used when specific reaction or fire resistance performance and acoustic insulation are required. The choice must be made according to the product technical data sheet and project requirements.
It depends on the type of core, its thermal conductivity and thickness. To compare solutions, the thermal transmittance U declared by the manufacturer for the specific panel must be reviewed, avoiding generic equivalences with other materials.
Yes, but acoustic behaviour varies greatly depending on the core, thickness, sheets and the complete cladding system. Rockwool solutions are usually used when acoustic insulation or absorption are important requirements.
The answer depends on the product and the required classification. Rockwool core panels are commonly used in solutions with higher reaction or fire resistance requirements. Manufacturer classifications and tests must always be checked.
Continuity of insulation, joints, junctions and building ventilation must be correctly resolved. In humid environments or with large temperature differences it may be necessary to study the risk of condensation in the building assembly.
INSTALLATION
Correct installation depends on the panel, structure, loads, fixings and trims.
Panels are placed on the supporting structure and fixed with specific screws. The sequence, overlaps, joints, trims and number of fixings must follow the manufacturer’s documentation and the project.
It can be fixed to metal, timber or other compatible structures. Separation between supports must not be decided generically: it depends on the panel, thickness, span, wind and snow loads and project conditions.
Specific fixings for sandwich panel are used, normally self-drilling or suitable for the support, with sealing elements where appropriate. Diameter, length and number of screws must be defined according to the panel, support and loads.
Minimum slope depends on the panel model, roof length, overlaps and roof conditions. The manufacturer’s technical data sheet and the project must be consulted before setting a percentage.
It is recommended to use cold-cutting tools suitable for the material. Abrasive discs can heat and damage the protective coating of the sheet, so they should be avoided when the manufacturer indicates so.
Only by following the manufacturer’s instructions, the safety plan and fall protection systems. Panel capacity during installation depends on the product, separation between supports and load position.
Yes. Ridges, cappings, junctions, side trims, gutters, flashings and seals help resolve watertightness, finish and durability. They must be designed as part of the complete system and not as secondary elements.
PRICE AND SUPPLY
What influences price and what information helps prepare a useful quotation.
Price depends on panel type, thickness, insulating core, finish, length, quantity, accessories, transport and delivery conditions. To compare quotations it is important that all include the same performance and the same scope.
Yes. Transport is organised according to lengths, quantities, destination, site accessibility and means available for unloading.
Supply and installation can be quoted for roofs, facades and refurbishments. The quotation depends on geometry, height, access, auxiliary means, trims, support condition and site location.
Indicate type of application, area, approximate lengths, indicative thickness, finish or colour, delivery location and whether you need supply only or also installation. Plans, sketches and photographs help prepare a more accurate quotation.
Available lengths depend on the manufacturer, model and transport. Before finalising dimensions, maximum manufacturing, handling, site access and unloading length must be verified.
Yes. With information about use, dimensions, location and project requirements, panel selection, thickness, trims and supply conditions can be guided.
PANEL TYPES
Go directly to the main product families to review options, finishes and applications.
STILL HAVE QUESTIONS?
Indicate panel type, area, location and whether you need supply or installation. We will review your enquiry to guide you better.
Tip: if you have plans, sketches or photographs, attach them so we can better assess dimensions, access and building solution.
