| Panel Construction | Two rigid glass magnesium board facings bonded to a rock wool core; confirm whether the panel is load-bearing or non-load-bearing. | Technical datasheet, sectional drawing, bill of materials, and adhesive specification. | Compare the delivered cross-section with the approved drawing and inspect a cut sample. | All layers, joints, and edge details should match the approved technical submittal. |
| Panel Thickness | Common project ranges are approximately 50–200 mm, subject to thermal, fire, acoustic, and structural requirements. | Approved shop drawings and dimensional inspection report. | Measure several points on each sampled panel using a calibrated thickness gauge or steel rule. | Use the project specification and approved tolerances; do not accept a nominal thickness without measured results. |
| Panel Width and Length | Widths are commonly around 900–1,200 mm; lengths are normally customized for transport and installation conditions. | Cutting list, production schedule, dimensional tolerances, and packing list. | Check random panels against the cutting list and verify that the longest panels can be safely transported and lifted. | Dimensions must suit the building grid, joint layout, lifting equipment, and access route. |
| Rock Wool Core Density | Typical sandwich-panel core densities are often approximately 80–150 kg/m³, but the required value depends on fire, acoustic, and structural design. | Core density declaration, batch test report, and test method reference. | Confirm the test method and compare laboratory results with the approved design value. | Do not select density alone; verify the complete tested panel assembly. |
| Thermal Conductivity | Rock wool products commonly have declared thermal conductivity values in the approximate range of 0.034–0.045 W/(m·K), depending on density and test conditions. | Thermal conductivity report, declared value, test temperature, and product conditioning details. | Check that the declared value applies to the actual core and panel configuration, not to a different insulation product. | Calculate the required U-value using the project climate, thermal bridges, joints, and installation details. |
| Fire Reaction Classification | Rock wool is generally non-combustible, but the classification of the complete sandwich panel depends on facings, adhesives, coatings, joints, and test configuration. | Classification report under EN 13501-1 or an applicable local standard; request the full test scope. | Verify that the tested thickness, core density, facing, adhesive, coating, and joint design match the proposed product. | A core-only fire statement is not sufficient for approving a complete sandwich panel system. |
| Fire Resistance | Fire-resistance periods such as 30, 60, or 120 minutes are assembly-specific and cannot be inferred from insulation thickness alone. | Fire-resistance test or assessment report for the complete wall or roof assembly. | Check supporting structure, fixing spacing, joint treatment, direction of exposure, and test orientation. | Use only a tested or formally assessed assembly that matches the project design. |
| Glass Magnesium Board Quality | Check board thickness, density, flatness, water resistance, dimensional stability, surface condition, and chloride-related corrosion risk. | Board product data, composition declaration, water-resistance data, dimensional-stability results, and chloride-content information where applicable. | Inspect edges and surfaces for warping, delamination, powdering, staining, or moisture damage; review independent test evidence. | Reject panels with visible delamination, severe warping, softened edges, or unexplained moisture damage. |
| Mechanical Performance | Required bending strength, pull-out resistance, impact resistance, and wind-load capacity depend on span, support spacing, and fixing design. | Structural calculation, bending test, fastener pull-out data, and wind-load test or engineering assessment. | Match test specimens and support conditions with the intended wall or roof application. | The supplier should provide design load tables or project-specific calculations rather than only a generic strength value. |
| Moisture and Water Protection | The system should include sealed joints, compatible flashings, protected cut edges, and a defined storage procedure. | Water-resistance data, joint-detail drawings, sealant compatibility statement, and storage instructions. | Inspect joint profiles, sealant locations, drainage paths, and edge protection before installation. | The panel should not be treated as waterproof if joints, penetrations, and flashings are not correctly detailed. |
| Dimensional Tolerance | Typical tolerances may include approximately ±2 mm for thickness and ±3 mm for length or width, but the contractual specification governs. | Factory inspection plan, tolerance specification, and dimensional inspection records. | Measure thickness, width, length, squareness, flatness, and joint profile on representative samples. | Agree tolerances before production; do not rely on undocumented “standard” tolerances. |
| Quality Management | A documented quality-management system should control incoming materials, bonding, pressing, curing, inspection, and traceability. | Quality manual, inspection and test plan, calibration records, nonconformance procedure, and batch traceability records. | Review current certificates and audit the production process or appoint an independent inspection agency. | Certificates should identify the legal manufacturing site, scope, validity period, and certification body. |
| Product Certifications | Relevant evidence may include EN 13501-1 classification, fire-resistance testing, applicable ISO or ASTM test reports, and local building-code approvals. | Complete certificates and reports, including product description, test laboratory, date, standard, and tested configuration. | Verify report numbers directly with the issuing laboratory or certification body where possible. | A management-system certificate alone does not certify the fire, thermal, or structural performance of the panel. |
| Factory Production Capacity | Confirm available production line length, maximum panel size, bonding or pressing method, lead time, and batch-control capability. | Factory profile, equipment list, production schedule, sample batch records, and delivery plan. | Conduct a factory audit or request dated production-line photographs and independent inspection records. | Capacity should be evaluated against the required quantity, delivery sequence, and replacement-panel needs. |
| Installation Documentation | A complete manual should cover substrate preparation, lifting, fixing, joint sealing, cutting, penetrations, flashings, and repair procedures. | Installation manual, CAD details, method statement, fixing schedule, and health-and-safety guidance. | Check that the details correspond to the actual panel thickness, joint type, fasteners, and building use. | Generic brochures are insufficient when they omit joint, corner, opening, and penetration details. |
| Installation Training and Site Support | Preferred support includes pre-installation meetings, installer training, first-panel supervision, technical hotline, and site inspection availability. | Training agenda, site-support scope, response-time commitment, inspection checklist, and escalation procedure. | Obtain written confirmation of who provides support, when it is available, and what costs are included. | Support should be contractually defined, especially for fire-rated walls, cold rooms, roofs, and complex penetrations. |
| Packaging and Storage | Panels should be protected from rain, standing water, impact, contamination, and excessive stacking loads during transport and storage. | Packaging specification, loading plan, storage instructions, and handling labels. | Inspect packaging on arrival and record moisture, crushed corners, damaged faces, and shifted stacks. | Record damage before unloading and segregate affected panels for technical review. |
| Final Quality Inspection | Inspection should cover appearance, dimensions, joints, fasteners, sealants, alignment, flashings, openings, and cleaning. | Inspection and test plan, punch list, nonconformance reports, as-built drawings, and completion checklist. | Use calibrated measuring tools and photograph representative details before concealment. | Approve the installation only after open defects, sealant gaps, damaged edges, and unapproved modifications are closed. |
